Implement duels for ranked play (#37556 )

I've seen this suggested quite a bit and is a pretty easy implementation all things considered. For now, while on the queue screen, you can open up the dashboard overlay and select another player to duel. This will bring you into an unranked lobby. https://github.com/user-attachments/assets/712897a9-9350-4741-899d-59662c722e43
Stop song preview when entering spectator (#37564 )
2026-06-03 13:44:34 +08:00 · 2026-04-29 16:12:27 +09:00 · 2026-04-29 14:41:33 +09:00 · 2026-04-29 11:27:28 +09:00 · 2026-04-28 22:08:23 +09:00 · 2026-04-28 20:18:30 +09:00
294 changed files with 9331 additions and 2051 deletions
@@ -10,7 +10,7 @@
      "rollForward": false
    },
    "codefilesanity": {
-      "version": "0.0.37",
+      "version": "0.0.41",
      "commands": [
        "CodeFileSanity"
      ],
@@ -24,4 +24,4 @@
      "rollForward": false
    }
  }
-}
+}
@@ -50,7 +50,7 @@ jobs:
          exit $exit_code

      - name: InspectCode
-        uses: JetBrains/ReSharper-InspectCode@v0.11
+        uses: JetBrains/ReSharper-InspectCode@v0.12
        with:
          # this is WTF tier but if you don't specify *both* of these the defaults assume `build: true`
          build: false
@@ -101,14 +101,42 @@ jobs:
          NUnit.ConsoleOut=0

      # Attempt to upload results even if test fails.
-      # https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#always
+      # https://docs.github.com/en/actions/reference/workflows-and-actions/expressions#cancelled
      - name: Upload Test Results
        uses: actions/upload-artifact@v7
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
        with:
          name: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}
          path: ${{github.workspace}}/TestResults/TestResults-${{matrix.os.prettyname}}-${{matrix.threadingMode}}.trx

+  test-results:
+    name: Test results
+    runs-on: ubuntu-latest
+    # we want to wait for the `test` job to complete, but run regardless of whether it succeeds or fails
+    # https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-syntax#example-not-requiring-successful-dependent-jobs
+    if: ${{ !cancelled() }}
+    needs: test
+    timeout-minutes: 5
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Download results
+        uses: actions/download-artifact@v8
+        with:
+          pattern: osu-test-results-*
+          merge-multiple: true
+
+      - name: Add test results summary to workflow run
+        uses: dorny/test-reporter@v3.0.0
+        with:
+          name: Results
+          path: "*.trx"
+          reporter: dotnet-trx
+          list-suites: 'failed'
+          list-tests: 'failed'
+          use-actions-summary: 'true'
+
  build-only-android:
    name: Build only (Android)
    runs-on: windows-latest
@@ -1,45 +0,0 @@
-# This is a workaround to allow PRs to report their coverage. This will run inside the base repository.
-# See:
-#   * https://github.com/dorny/test-reporter#recommended-setup-for-public-repositories
-#   * https://docs.github.com/en/actions/reference/authentication-in-a-workflow#permissions-for-the-github_token
-name: Annotate CI run with test results
-on:
-  workflow_run:
-    workflows: [ "Continuous Integration" ]
-    types:
-      - completed
-
-permissions:
-  contents: read
-  actions: read
-  checks: write
-
-jobs:
-  annotate:
-    name: Annotate CI run with test results
-    runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion != 'cancelled' }}
-    timeout-minutes: 5
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          repository: ${{ github.event.workflow_run.repository.full_name }}
-          ref: ${{ github.event.workflow_run.head_sha }}
-
-      - name: Download results
-        uses: actions/download-artifact@v8
-        with:
-          pattern: osu-test-results-*
-          merge-multiple: true
-          run-id: ${{ github.event.workflow_run.id }}
-          github-token: ${{ github.token }}
-
-      - name: Annotate CI run with test results
-        uses: dorny/test-reporter@v2.6.0
-        with:
-          name: Results
-          path: "*.trx"
-          reporter: dotnet-trx
-          list-suites: 'failed'
-          list-tests: 'failed'
@@ -13,6 +13,19 @@
            "preLaunchTask": "Build osu! (Debug)",
            "console": "internalConsole"
        },
+        {
+            "name": "osu! (Debug, Second Client)",
+            "type": "coreclr",
+            "request": "launch",
+            "program": "dotnet",
+            "args": [
+                "${workspaceRoot}/osu.Desktop/bin/Debug/net8.0/osu!.dll",
+                "--debug-client-id=1"
+            ],
+            "cwd": "${workspaceRoot}",
+            "preLaunchTask": "Build osu! (Debug)",
+            "console": "internalConsole"
+        },
        {
            "name": "osu! (Release)",
            "type": "coreclr",
@@ -2,6 +2,10 @@

 Thank you for showing interest in the development of osu!. We aim to provide a good collaborating environment for everyone involved, and as such have decided to list some of the most important things to keep in mind in the process. The guidelines below have been chosen based on past experience.

+## Foreword on AI usage
+
+Our team believes in **human contributions**. Any contribution – be it an issue report or a pull request – which is created by, documented by, or aided by AI/LLM usage will typically be **closed and locked without further discussion**.
+
 ## Table of contents

 1. [Reporting bugs](#reporting-bugs)
@@ -138,6 +138,8 @@ If you wish to help with localisation efforts, head over to [crowdin](https://cr

 We love to reward quality contributions. If you have made a large contribution, or are a regular contributor, you are welcome to [submit an expense via opencollective](https://opencollective.com/ppy/expenses/new). If you have any questions, feel free to [reach out to peppy](mailto:pe@ppy.sh) before doing so.

+Our team believes in **human contributions**. Any contribution – be it an issue report or a pull request – which is created by, documented by, or aided by AI/LLM usage will typically be **closed and locked without further discussion**.
+
 ## Licence

 *osu!*'s code and framework are licensed under the [MIT licence](https://opensource.org/licenses/MIT). Please see [the licence file](LICENCE) for more information. [tl;dr](https://tldrlegal.com/license/mit-license) you can do whatever you want as long as you include the original copyright and license notice in any copy of the software/source.
@@ -10,7 +10,7 @@
    <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
  </PropertyGroup>
  <ItemGroup>
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.318.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2026.428.0" />
  </ItemGroup>
  <PropertyGroup>
    <!-- Fody does not handle Android build well, and warns when unchanged.
@@ -190,7 +190,7 @@ namespace osu.Desktop
            }

            // user party
-            if (!hideIdentifiableInformation && multiplayerClient.Room != null && multiplayerClient.Room.Settings.MatchType != MatchType.Matchmaking)
+            if (!hideIdentifiableInformation && multiplayerClient.Room != null && !multiplayerClient.Room.Settings.MatchType.IsMatchmakingType())
            {
                MultiplayerRoom room = multiplayerClient.Room;

@@ -0,0 +1,13 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Newtonsoft.Json;
+
+namespace osu.Desktop.IPC.Messages
+{
+    public class HitCountMessage : OsuWebSocketMessage
+    {
+        [JsonProperty("new_hits")]
+        public long NewHits { get; init; }
+    }
+}
@@ -0,0 +1,19 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Newtonsoft.Json;
+using osu.Framework.Extensions.TypeExtensions;
+
+namespace osu.Desktop.IPC.Messages
+{
+    public abstract class OsuWebSocketMessage
+    {
+        [JsonProperty("type")]
+        public string Type { get; }
+
+        protected OsuWebSocketMessage()
+        {
+            Type = GetType().ReadableName();
+        }
+    }
+}
@@ -0,0 +1,75 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Linq;
+using System.Threading;
+using osu.Desktop.IPC.Messages;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Logging;
+using osu.Game.Configuration;
+using osu.Game.IPC;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+using JsonConvert = Newtonsoft.Json.JsonConvert;
+
+namespace osu.Desktop.IPC
+{
+    public partial class OsuWebSocketProvider : Component
+    {
+        private WebSocketServer? server;
+        private readonly Bindable<ScoreInfo> lastLocalScore = new Bindable<ScoreInfo>();
+
+        [BackgroundDependencyLoader]
+        private void load(SessionStatics sessionStatics)
+        {
+            server = new WebSocketServer(49727);
+            server.StartAsync().FireAndForget(onError: ex => Logger.Error(ex, "Failed to start websocket"));
+
+            sessionStatics.BindWith(Static.LastLocalUserScore, lastLocalScore);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            lastLocalScore.BindValueChanged(val =>
+            {
+                if (val.NewValue == null)
+                    return;
+
+                if (server?.IsRunning != true)
+                    return;
+
+                var msg = new HitCountMessage { NewHits = val.NewValue.Statistics.Where(kv => kv.Key.IsBasic() && kv.Key.IsHit()).Sum(kv => kv.Value) };
+                broadcast(msg);
+            });
+        }
+
+        private void broadcast(OsuWebSocketMessage message)
+        {
+            if (server?.IsRunning != true)
+                return;
+
+            string messageString = JsonConvert.SerializeObject(message);
+            server.BroadcastAsync(messageString).FireAndForget();
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (server?.IsRunning == true)
+            {
+                var cts = new CancellationTokenSource();
+                cts.CancelAfter(TimeSpan.FromSeconds(10));
+                server.StopAsync(cts.Token).WaitSafely();
+                server = null;
+            }
+        }
+    }
+}
@@ -6,6 +6,7 @@ using System.IO;
 using System.Reflection;
 using System.Runtime.Versioning;
 using Microsoft.Win32;
+using osu.Desktop.IPC;
 using osu.Desktop.Performance;
 using osu.Desktop.Security;
 using osu.Framework.Platform;
@@ -35,6 +36,8 @@ namespace osu.Desktop

        public bool IsFirstRun { get; init; }

+        public bool EnableWebSocketServer { get; init; }
+
        public OsuGameDesktop(string[]? args = null)
            : base(args)
        {
@@ -148,6 +151,9 @@ namespace osu.Desktop

            osuSchemeLinkIPCChannel = new OsuSchemeLinkIPCChannel(Host, this);
            archiveImportIPCChannel = new ArchiveImportIPCChannel(Host, this);
+
+            if (EnableWebSocketServer)
+                Add(new OsuWebSocketProvider());
        }

        public override void SetHost(GameHost host)
@@ -140,7 +140,8 @@ namespace osu.Desktop
                {
                    host.Run(new OsuGameDesktop(args)
                    {
-                        IsFirstRun = isFirstRun
+                        IsFirstRun = isFirstRun,
+                        EnableWebSocketServer = Environment.GetEnvironmentVariable("OSU_WEBSOCKET_SERVER") == "1",
                    });
                }
            }
@@ -155,6 +155,7 @@ namespace osu.Game.Rulesets.Catch
                        new CatchModMuted(),
                        new CatchModNoScope(),
                        new CatchModMovingFast(),
+                        new CatchModSynesthesia(),
                    };

                case ModType.System:
@@ -18,6 +18,7 @@ namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
        private readonly Path drawablePath;

        private readonly List<(double Time, float X)> vertices = new List<(double, float)>();
+        private readonly List<Vector2> sliderVertices = new List<Vector2>();

        public ScrollingPath()
        {
@@ -47,9 +48,8 @@ namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
        private void computeTimeXs(JuiceStream hitObject)
        {
            vertices.Clear();
-
-            var sliderVertices = new List<Vector2>();
-            hitObject.Path.GetPathToProgress(sliderVertices, 0, 1);
+            sliderVertices.Clear();
+            sliderVertices.AddRange(hitObject.Path.CalculatedPath);

            if (sliderVertices.Count == 0)
                return;
@@ -0,0 +1,60 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Beatmaps;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Screens.Edit;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Mods
+{
+    /// <summary>
+    /// Mod that colours <see cref="HitObject"/>s based on the musical division they are on
+    /// </summary>
+    public class CatchModSynesthesia : ModSynesthesia, IApplicableToBeatmap, IApplicableToDrawableHitObject
+    {
+        private readonly OsuColour colours = new OsuColour();
+
+        private IBeatmap? currentBeatmap { get; set; }
+
+        public void ApplyToBeatmap(IBeatmap beatmap)
+        {
+            //Store a reference to the current beatmap to look up the beat divisor when notes are drawn
+            if (currentBeatmap != beatmap)
+                currentBeatmap = beatmap;
+        }
+
+        public void ApplyToDrawableHitObject(DrawableHitObject d)
+        {
+            if (currentBeatmap == null) return;
+
+            Color4? timingBasedColour = null;
+
+            d.HitObjectApplied += _ =>
+            {
+                // Block bananas from getting coloured.
+                if (d.HitObject is not Banana)
+                {
+                    timingBasedColour = BindableBeatDivisor.GetColourFor(currentBeatmap.ControlPointInfo.GetClosestBeatDivisor(d.HitObject.StartTime), colours);
+                }
+
+                // Colour droplets into a solid colour, as droplets aren't generated snapped to timeline ticks.
+                if (d.HitObject is Droplet)
+                {
+                    timingBasedColour = Color4.LightGreen;
+                }
+            };
+
+            // Need to set this every update to ensure it doesn't get overwritten by DrawableHitObject.OnApply() -> UpdateComboColour().
+            d.OnUpdate += _ =>
+            {
+                if (timingBasedColour != null)
+                    d.AccentColour.Value = timingBasedColour.Value;
+            };
+        }
+    }
+}
@@ -175,8 +175,7 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// </remarks>
        public void ConvertFromSliderPath(SliderPath sliderPath, double velocity)
        {
-            var sliderPathVertices = new List<Vector2>();
-            sliderPath.GetPathToProgress(sliderPathVertices, 0, 1);
+            var sliderPathVertices = sliderPath.CalculatedPath;

            double time = 0;

@@ -19,6 +19,7 @@
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\osu.Game.Rulesets.Mania\osu.Game.Rulesets.Mania.csproj" />
+    <ProjectReference Include="..\osu.Game.Tests\osu.Game.Tests.csproj" />
    <ProjectReference Include="..\osu.Game\osu.Game.csproj" />
  </ItemGroup>
 </Project>
@@ -13,6 +13,7 @@
    </Compile>
  </ItemGroup>
  <ItemGroup Label="Project References">
+    <ProjectReference Include="..\osu.Game.Tests\osu.Game.Tests.csproj" />
    <ProjectReference Include="..\osu.Game\osu.Game.csproj" />
    <ProjectReference Include="..\osu.Game.Rulesets.Mania\osu.Game.Rulesets.Mania.csproj" />
  </ItemGroup>
@@ -27,6 +27,24 @@ namespace osu.Game.Rulesets.Mania.Tests
        [TestCase("100374")]
        [TestCase("1450162")]
        [TestCase("4869637")]
+        [TestCase("1K")]
+        [TestCase("2K")]
+        [TestCase("3K")]
+        [TestCase("4K")]
+        [TestCase("5K")]
+        [TestCase("6K")]
+        [TestCase("7K")]
+        [TestCase("8K")]
+        [TestCase("9K")]
+        [TestCase("10K")]
+        // [TestCase("11K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("12K")]
+        // [TestCase("13K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("14K")]
+        // [TestCase("15K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("16K")]
+        // [TestCase("17K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("18K")]
        public void Test(string name) => base.Test(name);

        protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)
@@ -0,0 +1,45 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.IO.Stores;
+using static osu.Game.Tests.Beatmaps.Formats.LegacyBeatmapEncoderTest;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class ManiaLegacyBeatmapEncoderTest
+    {
+        private static readonly DllResourceStore beatmaps_resource_store = new DllResourceStore(typeof(ManiaLegacyBeatmapEncoderTest).Assembly);
+
+        [TestCase("1K")]
+        [TestCase("2K")]
+        [TestCase("3K")]
+        [TestCase("4K")]
+        [TestCase("5K")]
+        [TestCase("6K")]
+        [TestCase("7K")]
+        [TestCase("8K")]
+        [TestCase("9K")]
+        [TestCase("10K")]
+        // [TestCase("11K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("12K")]
+        // [TestCase("13K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("14K")]
+        // [TestCase("15K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("16K")]
+        // [TestCase("17K")] <- See comment in `ManiaBeatmapConverter` ctor for disable reason.
+        [TestCase("18K")]
+        [TestCase("7K+1")]
+        public void TestEncodeDecodeStability(string name)
+        {
+            var decoded = DecodeFromLegacy(beatmaps_resource_store.GetStream($"Resources/Testing/Beatmaps/{name}.osu"), beatmaps_resource_store, name);
+            var decodedAfterEncode = DecodeFromLegacy(EncodeToLegacy(decoded), beatmaps_resource_store, name);
+
+            Sort(decoded.beatmap);
+            Sort(decodedAfterEncode.beatmap);
+
+            CompareBeatmaps(decoded, decodedAfterEncode);
+        }
+    }
+}
@@ -25,6 +25,8 @@ namespace osu.Game.Rulesets.Mania.Tests.Mods
 {
    public partial class TestSceneManiaModNoRelease : RateAdjustedBeatmapTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        private const double time_before_head = 250;
        private const double time_head = 1500;
        private const double time_during_hold_1 = 2500;
@@ -0,0 +1 @@
+{"Mappings":[{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":125.0,"Objects":[{"StartTime":125.0,"EndTime":125.0,"Column":1}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":250.0,"Objects":[{"StartTime":250.0,"EndTime":250.0,"Column":2}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":375.0,"Objects":[{"StartTime":375.0,"EndTime":375.0,"Column":3}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":500.0,"Objects":[{"StartTime":500.0,"EndTime":500.0,"Column":4}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":625.0,"Objects":[{"StartTime":625.0,"EndTime":625.0,"Column":5}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":750.0,"Objects":[{"StartTime":750.0,"EndTime":750.0,"Column":6}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":875.0,"Objects":[{"StartTime":875.0,"EndTime":875.0,"Column":7}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":1000.0,"Objects":[{"StartTime":1000.0,"EndTime":1000.0,"Column":8}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":1125.0,"Objects":[{"StartTime":1125.0,"EndTime":1125.0,"Column":9}]}]}
@@ -0,0 +1,46 @@
+osu file format v14
+
+[General]
+Mode: 3
+
+[Metadata]
+Title:keycount test
+TitleUnicode:keycount test
+Artist:mania
+ArtistUnicode:mania
+Creator:spaceman_atlas
+Version:10K
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:10
+OverallDifficulty:5
+ApproachRate:5
+SliderMultiplier:1.4
+SliderTickRate:1
+
+[Events]
+//Background and Video events
+//Break Periods
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Fail)
+//Storyboard Layer 2 (Pass)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Layer 4 (Overlay)
+//Storyboard Sound Samples
+
+[TimingPoints]
+0,500,4,2,0,100,1,0
+
+
+[HitObjects]
+25,192,0,1,0,0:0:0:0:
+76,192,125,1,0,0:0:0:0:
+128,192,250,1,0,0:0:0:0:
+179,192,375,1,0,0:0:0:0:
+230,192,500,1,0,0:0:0:0:
+281,192,625,1,0,0:0:0:0:
+332,192,750,1,0,0:0:0:0:
+384,192,875,1,0,0:0:0:0:
+435,192,1000,1,0,0:0:0:0:
+486,192,1125,1,0,0:0:0:0:
@@ -0,0 +1 @@
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+480,192,875,1,0,0:0:0:0:
@@ -0,0 +1 @@
+{"Mappings":[{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":125.0,"Objects":[{"StartTime":125.0,"EndTime":125.0,"Column":1}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":250.0,"Objects":[{"StartTime":250.0,"EndTime":250.0,"Column":2}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":375.0,"Objects":[{"StartTime":375.0,"EndTime":375.0,"Column":3}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":500.0,"Objects":[{"StartTime":500.0,"EndTime":500.0,"Column":4}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":625.0,"Objects":[{"StartTime":625.0,"EndTime":625.0,"Column":5}]},{"RandomW":273326509,"RandomX":451,"RandomY":842502087,"RandomZ":3579807591,"StartTime":750.0,"Objects":[{"StartTime":750.0,"EndTime":750.0,"Column":6}]}]}
@@ -0,0 +1,43 @@
+osu file format v14
+
+[General]
+Mode: 3
+
+[Metadata]
+Title:keycount test
+TitleUnicode:keycount test
+Artist:mania
+ArtistUnicode:mania
+Creator:spaceman_atlas
+Version:7K
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:7
+OverallDifficulty:5
+ApproachRate:5
+SliderMultiplier:1.4
+SliderTickRate:1
+
+[Events]
+//Background and Video events
+//Break Periods
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Fail)
+//Storyboard Layer 2 (Pass)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Layer 4 (Overlay)
+//Storyboard Sound Samples
+
+[TimingPoints]
+0,500,4,2,0,100,1,0
+
+
+[HitObjects]
+36,192,0,1,0,0:0:0:0:
+109,192,125,1,0,0:0:0:0:
+182,192,250,1,0,0:0:0:0:
+256,192,375,1,0,0:0:0:0:
+329,192,500,1,0,0:0:0:0:
+402,192,625,1,0,0:0:0:0:
+475,192,750,1,0,0:0:0:0:
@@ -0,0 +1 @@
+{"Mappings":[{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":125.0,"Objects":[{"StartTime":125.0,"EndTime":125.0,"Column":1}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":250.0,"Objects":[{"StartTime":250.0,"EndTime":250.0,"Column":2}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":375.0,"Objects":[{"StartTime":375.0,"EndTime":375.0,"Column":3}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":500.0,"Objects":[{"StartTime":500.0,"EndTime":500.0,"Column":4}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":625.0,"Objects":[{"StartTime":625.0,"EndTime":625.0,"Column":5}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":750.0,"Objects":[{"StartTime":750.0,"EndTime":750.0,"Column":6}]},{"RandomW":273326509,"RandomX":471,"RandomY":842502087,"RandomZ":3579807591,"StartTime":875.0,"Objects":[{"StartTime":875.0,"EndTime":875.0,"Column":7}]}]}
@@ -0,0 +1,44 @@
+osu file format v14
+
+[General]
+Mode: 3
+
+[Metadata]
+Title:keycount test
+TitleUnicode:keycount test
+Artist:mania
+ArtistUnicode:mania
+Creator:spaceman_atlas
+Version:8K
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:8
+OverallDifficulty:5
+ApproachRate:5
+SliderMultiplier:1.4
+SliderTickRate:1
+
+[Events]
+//Background and Video events
+//Break Periods
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Fail)
+//Storyboard Layer 2 (Pass)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Layer 4 (Overlay)
+//Storyboard Sound Samples
+
+[TimingPoints]
+0,500,4,2,0,100,1,0
+
+
+[HitObjects]
+32,192,0,1,0,0:0:0:0:
+96,192,125,1,0,0:0:0:0:
+160,192,250,1,0,0:0:0:0:
+224,192,375,1,0,0:0:0:0:
+288,192,500,1,0,0:0:0:0:
+352,192,625,1,0,0:0:0:0:
+416,192,750,1,0,0:0:0:0:
+480,192,875,1,0,0:0:0:0:
@@ -0,0 +1 @@
+{"Mappings":[{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":125.0,"Objects":[{"StartTime":125.0,"EndTime":125.0,"Column":1}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":250.0,"Objects":[{"StartTime":250.0,"EndTime":250.0,"Column":2}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":375.0,"Objects":[{"StartTime":375.0,"EndTime":375.0,"Column":3}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":500.0,"Objects":[{"StartTime":500.0,"EndTime":500.0,"Column":4}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":625.0,"Objects":[{"StartTime":625.0,"EndTime":625.0,"Column":5}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":750.0,"Objects":[{"StartTime":750.0,"EndTime":750.0,"Column":6}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":875.0,"Objects":[{"StartTime":875.0,"EndTime":875.0,"Column":7}]},{"RandomW":273326509,"RandomX":491,"RandomY":842502087,"RandomZ":3579807591,"StartTime":1000.0,"Objects":[{"StartTime":1000.0,"EndTime":1000.0,"Column":8}]}]}
@@ -0,0 +1,45 @@
+osu file format v14
+
+[General]
+Mode: 3
+
+[Metadata]
+Title:keycount test
+TitleUnicode:keycount test
+Artist:mania
+ArtistUnicode:mania
+Creator:spaceman_atlas
+Version:9K
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:9
+OverallDifficulty:5
+ApproachRate:5
+SliderMultiplier:1.4
+SliderTickRate:1
+
+[Events]
+//Background and Video events
+//Break Periods
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Fail)
+//Storyboard Layer 2 (Pass)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Layer 4 (Overlay)
+//Storyboard Sound Samples
+
+[TimingPoints]
+0,500,4,2,0,100,1,0
+
+
+[HitObjects]
+28,192,0,1,0,0:0:0:0:
+85,192,125,1,0,0:0:0:0:
+142,192,250,1,0,0:0:0:0:
+199,192,375,1,0,0:0:0:0:
+256,192,500,1,0,0:0:0:0:
+312,192,625,1,0,0:0:0:0:
+369,192,750,1,0,0:0:0:0:
+426,192,875,1,0,0:0:0:0:
+483,192,1000,1,0,0:0:0:0:
@@ -33,6 +33,8 @@ namespace osu.Game.Rulesets.Mania.Tests
    /// </summary>
    public partial class TestSceneHoldNoteInput : RateAdjustedBeatmapTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        private const double time_before_head = 250;
        private const double time_head = 1500;
        private const double time_during_hold_1 = 2500;
@@ -21,6 +21,8 @@ namespace osu.Game.Rulesets.Mania.Tests
 {
    public partial class TestSceneMaximumScore : RateAdjustedBeatmapTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        private ScoreAccessibleReplayPlayer currentPlayer = null!;

        private List<JudgementResult> judgementResults = new List<JudgementResult>();
@@ -26,6 +26,8 @@ namespace osu.Game.Rulesets.Mania.Tests
 {
    public partial class TestSceneOutOfOrderHits : RateAdjustedBeatmapTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        [Test]
        public void TestPreviousHitWindowDoesNotExtendPastNextObject()
        {
@@ -20,6 +20,8 @@ namespace osu.Game.Rulesets.Mania.Tests
 {
    public partial class TestSceneReplayRewinding : RateAdjustedBeatmapTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        private ReplayPlayer currentPlayer = null!;

        [Test]
@@ -26,6 +26,8 @@ namespace osu.Game.Rulesets.Mania.Tests
    [TestFixture]
    public partial class TestSceneTimingBasedNoteColouring : OsuTestScene
    {
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+
        private Bindable<bool> configTimingBasedNoteColouring;

        private ManualClock clock;
@@ -11,5 +11,6 @@
  </PropertyGroup>
  <ItemGroup Label="Project References">
    <ProjectReference Include="..\osu.Game.Rulesets.Mania\osu.Game.Rulesets.Mania.csproj" />
+    <ProjectReference Include="..\osu.Game.Tests\osu.Game.Tests.csproj" />
  </ItemGroup>
 </Project>
@@ -66,6 +66,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps

            if (IsForCurrentRuleset && TargetColumns > ManiaRuleset.MAX_STAGE_KEYS)
            {
+                // If support for odd key counts above 10 (11 / 13 / 15 / 17K) is ever desired, this code needs to go.
+                // For now, it's probably fine, as stable doesn't support them outside of manual .osu edits either.
                TargetColumns /= 2;
                Dual = true;
            }
@@ -44,7 +44,7 @@ namespace osu.Game.Rulesets.Mania.Edit

        protected override void Update()
        {
-            TimeRange.Value = TimelineTimeRange == null || ShowSpeedChanges.Value ? ComputeScrollTime(Config.Get<double>(ManiaRulesetSetting.ScrollSpeed)) : TimelineTimeRange.Value;
+            TargetTimeRange = TimelineTimeRange == null || ShowSpeedChanges.Value ? ComputeScrollTime(Config.Get<double>(ManiaRulesetSetting.ScrollSpeed)) : TimelineTimeRange.Value;
            base.Update();
        }
    }
@@ -98,9 +98,9 @@ namespace osu.Game.Rulesets.Mania
            return false;
        }

-        public bool FilterMayChangeFromMods(ValueChangedEvent<IReadOnlyList<Mod>> mods)
+        public bool FilterMayChangeFromMods(FilterCriteria criteria, ValueChangedEvent<IReadOnlyList<Mod>> mods)
        {
-            if (includedKeyCounts.Count != LegacyBeatmapDecoder.MAX_MANIA_KEY_COUNT)
+            if (includedKeyCounts.Count != LegacyBeatmapDecoder.MAX_MANIA_KEY_COUNT || criteria.Group == GroupMode.Variant)
            {
                // Interpreting as the Mod type is required for equality comparison.
                HashSet<Mod> oldSet = mods.OldValue.OfType<ManiaKeyMod>().AsEnumerable<Mod>().ToHashSet();
@@ -327,6 +327,8 @@ namespace osu.Game.Rulesets.Mania

        public override RulesetSettingsSubsection CreateSettings() => new ManiaSettingsSubsection(this);

+        public override LocalisableString VariantDescription => "Keys";
+
        public override IEnumerable<int> AvailableVariants
        {
            get
@@ -498,6 +500,9 @@ namespace osu.Game.Rulesets.Mania

        public int GetKeyCount(IBeatmapInfo beatmapInfo, IReadOnlyList<Mod>? mods = null)
            => ManiaBeatmapConverter.GetColumnCount(LegacyBeatmapConversionDifficultyInfo.FromBeatmapInfo(beatmapInfo), mods);
+
+        public override int GetVariantForBeatmap(IBeatmapInfo beatmapInfo, IReadOnlyList<Mod>? mods = null)
+            => GetKeyCount(beatmapInfo, mods);
    }

    public enum PlayfieldType
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.

-using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Graphics;
@@ -57,11 +56,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
            if (lastVersion != hitObject.Path.Version.Value)
            {
                lastVersion = hitObject.Path.Version.Value;
-
-                var vertices = new List<Vector2>();
-                hitObject.Path.GetPathToProgress(vertices, 0, 1);
-
-                body.SetVertices(vertices);
+                body.SetVertices(hitObject.Path.CalculatedPath);
            }

            OriginPosition = body.PathOffset;
@@ -3,6 +3,7 @@

 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Osu.Edit.Blueprints;
@@ -22,7 +23,7 @@ namespace osu.Game.Rulesets.Osu.Edit
                          """;
        }

-        public override Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.Solid.DraftingCompass };
+        public override Drawable CreateIcon() => new SpriteIcon { Icon = OsuIcon.EditorGrid };

        public override PlacementBlueprint CreatePlacementBlueprint() => new GridPlacementBlueprint();
    }
@@ -2,7 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.

 using osu.Framework.Graphics;
-using osu.Game.Beatmaps;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles;
@@ -17,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Edit
        {
        }

-        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Circles);
+        public override Drawable CreateIcon() => new SpriteIcon { Icon = OsuIcon.EditorHitCircle };

        public override HitObjectPlacementBlueprint CreatePlacementBlueprint() => new HitCirclePlacementBlueprint();
    }
@@ -2,7 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.

 using osu.Framework.Graphics;
-using osu.Game.Beatmaps;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders;
@@ -24,7 +25,7 @@ namespace osu.Game.Rulesets.Osu.Edit
                """;
        }

-        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders);
+        public override Drawable CreateIcon() => new SpriteIcon { Icon = OsuIcon.EditorSlider };

        public override HitObjectPlacementBlueprint CreatePlacementBlueprint() => new SliderPlacementBlueprint();
    }
@@ -2,7 +2,8 @@
 // See the LICENCE file in the repository root for full licence text.

 using osu.Framework.Graphics;
-using osu.Game.Beatmaps;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners;
@@ -17,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Edit
        {
        }

-        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Spinners);
+        public override Drawable CreateIcon() => new SpriteIcon { Icon = OsuIcon.EditorSpinner };

        public override HitObjectPlacementBlueprint CreatePlacementBlueprint() => new SpinnerPlacementBlueprint();
    }
@@ -141,6 +141,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
        /// </summary>
        public void MissForcefully() => ApplyMinResult();

+        // ReSharper disable once FunctionRecursiveOnAllPaths (TODO: remove after fixed https://youtrack.jetbrains.com/issue/RIDER-135036/Incorrect-recursive-on-all-execution-paths-inspection)
        private RectangleF parentScreenSpaceRectangle => ((DrawableOsuHitObject)ParentHitObject)?.parentScreenSpaceRectangle ?? Parent!.ScreenSpaceDrawQuad.AABBFloat;

        /// <summary>
@@ -9,12 +9,12 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
    public partial class TrianglesPiece : Triangles
    {
        protected override bool CreateNewTriangles => false;
-        protected override float SpawnRatio => 0.5f;

        public TrianglesPiece(int? seed = null)
            : base(seed)
        {
            TriangleScale = 1.2f;
+            SpawnRatio = 0.5f;
            HideAlphaDiscrepancies = false;
            ClampAxes = Axes.None;
        }
@@ -105,7 +105,8 @@ namespace osu.Game.Rulesets.Osu.Skinning
                return;

            // Generate the entire curve
-            drawableSlider.HitObject.Path.GetPathToProgress(CurrentCurve, 0, 1);
+            CurrentCurve.Clear();
+            CurrentCurve.AddRange(drawableSlider.HitObject.Path.CalculatedPath);
            SetVertices(CurrentCurve);

            // Force the body to be the final path size to avoid excessive autosize computations
@@ -265,9 +265,6 @@ namespace osu.Game.Rulesets.Osu.Utils
        /// </remarks>
        public static RectangleF CalculatePossibleMovementBounds(Slider slider)
        {
-            var pathPositions = new List<Vector2>();
-            slider.Path.GetPathToProgress(pathPositions, 0, 1);
-
            float minX = float.PositiveInfinity;
            float maxX = float.NegativeInfinity;

@@ -275,7 +272,7 @@ namespace osu.Game.Rulesets.Osu.Utils
            float maxY = float.NegativeInfinity;

            // Compute the bounding box of the slider.
-            foreach (var pos in pathPositions)
+            foreach (var pos in slider.Path.CalculatedPath)
            {
                minX = MathF.Min(minX, pos.X);
                maxX = MathF.Max(maxX, pos.X);
@@ -46,11 +46,11 @@ namespace osu.Game.Tests.Beatmaps.Formats
        {
            const string name = "Resources/storyboard_only_video.osu";

-            var decoded = decodeFromLegacy(beatmaps_resource_store.GetStream(name), name);
+            var decoded = DecodeFromLegacy(beatmaps_resource_store.GetStream(name), beatmaps_resource_store, name);
            Assert.That(decoded.beatmap.UnhandledEventLines.Count, Is.EqualTo(1));
            Assert.That(decoded.beatmap.UnhandledEventLines.Single(), Is.EqualTo("Video,0,\"video.avi\""));

-            var memoryStream = encodeToLegacy(decoded);
+            var memoryStream = EncodeToLegacy(decoded);

            var storyboard = new LegacyStoryboardDecoder().Decode(new LineBufferedReader(memoryStream));
            StoryboardLayer video = storyboard.Layers.Single(l => l.Name == "Video");
@@ -60,42 +60,42 @@ namespace osu.Game.Tests.Beatmaps.Formats
        [TestCaseSource(nameof(allBeatmaps))]
        public void TestEncodeDecodeStability(string name)
        {
-            var decoded = decodeFromLegacy(beatmaps_resource_store.GetStream(name), name);
-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy(decoded), name);
+            var decoded = DecodeFromLegacy(beatmaps_resource_store.GetStream(name), beatmaps_resource_store, name);
+            var decodedAfterEncode = DecodeFromLegacy(EncodeToLegacy(decoded), beatmaps_resource_store, name);

-            sort(decoded.beatmap);
-            sort(decodedAfterEncode.beatmap);
+            Sort(decoded.beatmap);
+            Sort(decodedAfterEncode.beatmap);

-            compareBeatmaps(decoded, decodedAfterEncode);
+            CompareBeatmaps(decoded, decodedAfterEncode);
        }

        [TestCaseSource(nameof(allBeatmaps))]
        public void TestEncodeDecodeStabilityDoubleConvert(string name)
        {
-            var decoded = decodeFromLegacy(beatmaps_resource_store.GetStream(name), name);
-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy(decoded), name);
+            var decoded = DecodeFromLegacy(beatmaps_resource_store.GetStream(name), beatmaps_resource_store, name);
+            var decodedAfterEncode = DecodeFromLegacy(EncodeToLegacy(decoded), beatmaps_resource_store, name);

            // run an extra convert. this is expected to be stable.
            decodedAfterEncode.beatmap = convert(decodedAfterEncode.beatmap);

-            sort(decoded.beatmap);
-            sort(decodedAfterEncode.beatmap);
+            Sort(decoded.beatmap);
+            Sort(decodedAfterEncode.beatmap);

-            compareBeatmaps(decoded, decodedAfterEncode);
+            CompareBeatmaps(decoded, decodedAfterEncode);
        }

        [TestCaseSource(nameof(allBeatmaps))]
        public void TestEncodeDecodeStabilityWithNonLegacyControlPoints(string name)
        {
-            var decoded = decodeFromLegacy(beatmaps_resource_store.GetStream(name), name);
+            var decoded = DecodeFromLegacy(beatmaps_resource_store.GetStream(name), beatmaps_resource_store, name);

            // we are testing that the transfer of relevant data to hitobjects (from legacy control points) sticks through encode/decode.
            // before the encode step, the legacy information is removed here.
            decoded.beatmap.ControlPointInfo = removeLegacyControlPointTypes(decoded.beatmap.ControlPointInfo);

-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy(decoded), name);
+            var decodedAfterEncode = DecodeFromLegacy(EncodeToLegacy(decoded), beatmaps_resource_store, name);

-            compareBeatmaps(decoded, decodedAfterEncode);
+            CompareBeatmaps(decoded, decodedAfterEncode);

            static ControlPointInfo removeLegacyControlPointTypes(ControlPointInfo controlPointInfo)
            {
@@ -120,7 +120,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
            }
        }

-        private void compareBeatmaps((IBeatmap beatmap, TestLegacySkin skin) expected, (IBeatmap beatmap, TestLegacySkin skin) actual)
+        public static void CompareBeatmaps((IBeatmap beatmap, TestLegacySkin skin) expected, (IBeatmap beatmap, TestLegacySkin skin) actual)
        {
            // Check all control points that are still considered to be at a global level.
            Assert.That(actual.beatmap.ControlPointInfo.TimingPoints.Serialize(), Is.EqualTo(expected.beatmap.ControlPointInfo.TimingPoints.Serialize()));
@@ -153,7 +153,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                }
            };

-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty))), string.Empty);
+            var encoded = EncodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty)));
+            var decodedAfterEncode = DecodeFromLegacy(encoded, beatmaps_resource_store, string.Empty);
            var decodedSlider = (Slider)decodedAfterEncode.beatmap.HitObjects[0];
            Assert.That(decodedSlider.Path.ControlPoints.Count, Is.EqualTo(4));
            Assert.That(decodedSlider.Path.ControlPoints[0].Type, Is.EqualTo(PathType.BSpline(3)));
@@ -182,7 +183,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                }
            };

-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty))), string.Empty);
+            var encoded = EncodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty)));
+            var decodedAfterEncode = DecodeFromLegacy(encoded, beatmaps_resource_store, string.Empty);
            var decodedSlider = (Slider)decodedAfterEncode.beatmap.HitObjects[0];
            Assert.That(decodedSlider.Path.ControlPoints.Count, Is.EqualTo(5));
        }
@@ -209,7 +211,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                }
            };

-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy((new Beatmap(), beatmapSkin)), string.Empty);
+            var encoded = EncodeToLegacy((new Beatmap(), beatmapSkin));
+            var decodedAfterEncode = DecodeFromLegacy(encoded, beatmaps_resource_store, string.Empty);
            Assert.That(decodedAfterEncode.skin.Configuration.CustomComboColours, Has.Count.EqualTo(8));
        }

@@ -231,8 +234,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                HitObjects = { originalSlider }
            };

-            var encoded = encodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty)));
-            var decodedAfterEncode = decodeFromLegacy(encoded, string.Empty, version: LegacyBeatmapEncoder.FIRST_LAZER_VERSION);
+            var encoded = EncodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty)));
+            var decodedAfterEncode = DecodeFromLegacy(encoded, beatmaps_resource_store, string.Empty, version: LegacyBeatmapEncoder.FIRST_LAZER_VERSION);
            var decodedSlider = (Slider)decodedAfterEncode.beatmap.HitObjects[0];
            Assert.That(decodedSlider.Path.ControlPoints.Select(p => p.Position),
                Is.EquivalentTo(originalSlider.Path.ControlPoints.Select(p => p.Position)));
@@ -251,7 +254,8 @@ namespace osu.Game.Tests.Beatmaps.Formats
                }
            };

-            var decodedAfterEncode = decodeFromLegacy(encodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty))), string.Empty);
+            var encoded = EncodeToLegacy((beatmap, new TestLegacySkin(beatmaps_resource_store, string.Empty)));
+            var decodedAfterEncode = DecodeFromLegacy(encoded, beatmaps_resource_store, string.Empty);

            Assert.That(decodedAfterEncode.beatmap.HitObjects[0].Samples[0].Suffix, Is.Null);
            Assert.That(decodedAfterEncode.beatmap.HitObjects[0].Samples[0].UseBeatmapSamples, Is.False);
@@ -263,7 +267,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
            Assert.That(decodedAfterEncode.beatmap.HitObjects[2].Samples[0].UseBeatmapSamples, Is.True);
        }

-        private bool areComboColoursEqual(IHasComboColours a, IHasComboColours b)
+        private static bool areComboColoursEqual(IHasComboColours a, IHasComboColours b)
        {
            // equal to null, no need to SequenceEqual
            if (a.ComboColours == null && b.ComboColours == null)
@@ -275,7 +279,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
            return a.ComboColours.SequenceEqual(b.ComboColours);
        }

-        private void sort(IBeatmap beatmap)
+        public static void Sort(IBeatmap beatmap)
        {
            // Sort control points to ensure a sane ordering, as they may be parsed in different orders. This works because each group contains only uniquely-typed control points.
            foreach (var g in beatmap.ControlPointInfo.Groups)
@@ -285,19 +289,19 @@ namespace osu.Game.Tests.Beatmaps.Formats
            }
        }

-        private (IBeatmap beatmap, TestLegacySkin skin) decodeFromLegacy(Stream stream, string name, int version = LegacyDecoder<Beatmap>.LATEST_VERSION)
+        public static (IBeatmap beatmap, TestLegacySkin skin) DecodeFromLegacy(Stream stream, IResourceStore<byte[]> beatmapsResourceStore, string name, int version = LegacyDecoder<Beatmap>.LATEST_VERSION)
        {
            using (var reader = new LineBufferedReader(stream))
            {
                var beatmap = new LegacyBeatmapDecoder(version) { ApplyOffsets = false }.Decode(reader);
-                var beatmapSkin = new TestLegacySkin(beatmaps_resource_store, name);
+                var beatmapSkin = new TestLegacySkin(beatmapsResourceStore, name);
                stream.Seek(0, SeekOrigin.Begin);
                beatmapSkin.Configuration = new LegacySkinDecoder().Decode(reader);
                return (convert(beatmap), beatmapSkin);
            }
        }

-        private class TestLegacySkin : LegacySkin
+        public class TestLegacySkin : LegacySkin
        {
            public TestLegacySkin(IResourceStore<byte[]> fallbackStore, string fileName)
                : base(new SkinInfo { Name = "Test Skin", Creator = "Craftplacer" }, null, fallbackStore, fileName)
@@ -305,7 +309,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
            }
        }

-        private MemoryStream encodeToLegacy((IBeatmap beatmap, ISkin skin) fullBeatmap)
+        public static MemoryStream EncodeToLegacy((IBeatmap beatmap, ISkin skin) fullBeatmap)
        {
            var (beatmap, beatmapSkin) = fullBeatmap;
            var stream = new MemoryStream();
@@ -318,7 +322,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
            return stream;
        }

-        private IBeatmap convert(IBeatmap beatmap)
+        private static IBeatmap convert(IBeatmap beatmap)
        {
            switch (beatmap.BeatmapInfo.Ruleset.OnlineID)
            {
@@ -65,6 +65,7 @@ namespace osu.Game.Tests.Beatmaps
        }

        [Test]
+        [FlakyTest] // one fix attempted in https://github.com/ppy/osu/pull/37178, didn't work
        public void TestInvalidationFlow()
        {
            BeatmapInfo postEditBeatmapInfo = null;
@@ -187,6 +187,7 @@ namespace osu.Game.Tests.Database
        }

        [Test]
+        [FlakyTest]
        public void TestCustomRulesetScoreNotSubjectToUpgrades([Values] bool available)
        {
            RulesetInfo rulesetInfo = null!;
@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Net.WebSockets;
+using System.Threading;
+using System.Threading.Tasks;
+using osu.Game.IPC;
+
+namespace osu.Game.Tests.IPC
+{
+    public sealed class WebSocketClient : IDisposable
+    {
+        public event Action<string>? MessageReceived;
+        public event Action? Closed;
+
+        private readonly int port;
+        private WebSocketChannel? channel;
+
+        public WebSocketClient(int port)
+        {
+            this.port = port;
+        }
+
+        public async Task Start(CancellationToken cancellationToken = default)
+        {
+            var webSocket = new ClientWebSocket();
+            await webSocket.ConnectAsync(new Uri($@"ws://localhost:{port}/"), cancellationToken);
+            channel = new WebSocketChannel(webSocket);
+            channel.MessageReceived += msg => MessageReceived?.Invoke(msg);
+            channel.ClosedPrematurely += () => Closed?.Invoke();
+            channel.Start(cancellationToken);
+        }
+
+        public async Task SendAsync(string message)
+        {
+            if (channel == null)
+                throw new InvalidOperationException($@"Must {nameof(Start)} first.");
+
+            await channel.SendAsync(message);
+        }
+
+        public async Task StopAsync(CancellationToken stoppingToken = default)
+        {
+            try
+            {
+                if (channel != null)
+                    await channel.StopAsync(stoppingToken).ConfigureAwait(false);
+            }
+            catch (OperationCanceledException)
+            {
+                // has to be caught manually because outer task isn't accepting `stoppingToken`.
+            }
+        }
+
+        public void Dispose()
+        {
+            channel?.Dispose();
+        }
+    }
+}
@@ -0,0 +1,274 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Game.IPC;
+using osu.Game.Online.Multiplayer;
+
+namespace osu.Game.Tests.IPC
+{
+    [TestFixture]
+    public class WebSocketTest
+    {
+        [Test]
+        public async Task TestClientInitiatedDuplexCommunication()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            var duplexComplete = new ManualResetEventSlim(false);
+
+            server.MessageReceived += (clientId, msg) =>
+            {
+                if (msg != "PING")
+                    return;
+
+                // ReSharper disable once AccessToDisposedClosure
+                server.SendAsync(clientId, "PONG").FireAndForget();
+            };
+            client.MessageReceived += msg =>
+            {
+                if (msg != "PONG")
+                    return;
+
+                duplexComplete.Set();
+            };
+
+            await server.StartAsync();
+            await client.Start();
+
+            await client.SendAsync("PING");
+            Assert.That(duplexComplete.Wait(10_000));
+
+            await client.StopAsync();
+            await server.StopAsync();
+
+            client.Dispose();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestServerInitiatedDuplexCommunication()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            var clientConnected = new ManualResetEventSlim();
+            var duplexComplete = new ManualResetEventSlim();
+
+            client.MessageReceived += msg =>
+            {
+                if (msg != "PING")
+                    return;
+
+                // ReSharper disable once AccessToDisposedClosure
+                client.SendAsync("PONG").FireAndForget();
+            };
+            server.ClientConnected += _ => clientConnected.Set();
+            server.MessageReceived += (_, msg) =>
+            {
+                if (msg != "PONG")
+                    return;
+
+                duplexComplete.Set();
+            };
+
+            await server.StartAsync();
+            await client.Start();
+            Assert.That(clientConnected.Wait(10_000));
+
+            await server.SendAsync(1, "PING");
+            Assert.That(duplexComplete.Wait(10_000));
+
+            await client.StopAsync();
+            await server.StopAsync();
+
+            client.Dispose();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestServerBroadcast()
+        {
+            const int port = 54321;
+            const int client_count = 5;
+
+            var server = new WebSocketServer(port);
+            var clients = new List<WebSocketClient>(client_count);
+            var connectionCountdown = new CountdownEvent(client_count);
+            var receiptCountdown = new CountdownEvent(client_count);
+
+            for (int i = 0; i < client_count; ++i)
+            {
+                var client = new WebSocketClient(port);
+                client.MessageReceived += msg =>
+                {
+                    if (msg != "HI ALL")
+                        return;
+
+                    receiptCountdown.Signal();
+                };
+                clients.Add(client);
+            }
+
+            server.ClientConnected += _ => connectionCountdown.Signal();
+
+            await server.StartAsync();
+
+            foreach (var client in clients)
+                await client.Start();
+            Assert.That(connectionCountdown.Wait(10_000));
+
+            await server.BroadcastAsync("HI ALL");
+            Assert.That(receiptCountdown.Wait(10_000));
+
+            foreach (var client in clients)
+            {
+                await client.StopAsync();
+                client.Dispose();
+            }
+
+            await server.StopAsync();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestClientSoftAborts()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            await server.StartAsync();
+            await client.Start();
+
+            await client.StopAsync();
+            client.Dispose();
+
+            await server.StopAsync();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestClientHardAborts()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            await server.StartAsync();
+            await client.Start();
+
+            await client.StopAsync(new CancellationToken(true));
+            client.Dispose();
+
+            await server.StopAsync();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestServerSoftAborts()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            await server.StartAsync();
+            await client.Start();
+
+            await server.StopAsync();
+            server.Dispose();
+
+            await client.StopAsync();
+            client.Dispose();
+        }
+
+        [Test]
+        public async Task TestServerHardAborts()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            await server.StartAsync();
+            await client.Start();
+
+            await server.StopAsync(new CancellationToken(true));
+            server.Dispose();
+
+            await client.StopAsync();
+            client.Dispose();
+        }
+
+        [Test]
+        public async Task TestClientMessageTooLong()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            var client = new WebSocketClient(port);
+
+            var clientClosed = new ManualResetEventSlim();
+            client.Closed += clientClosed.Set;
+
+            await server.StartAsync();
+            await client.Start();
+
+            await client.SendAsync(new string('0', 9999));
+            Assert.That(clientClosed.Wait(10_000));
+            await client.StopAsync();
+            client.Dispose();
+
+            var client2 = new WebSocketClient(port);
+
+            var duplexComplete = new ManualResetEventSlim();
+            server.MessageReceived += (clientId, msg) =>
+            {
+                if (msg != "PING")
+                    return;
+
+                // ReSharper disable once AccessToDisposedClosure
+                server.SendAsync(clientId, "PONG").FireAndForget();
+            };
+            client2.MessageReceived += msg =>
+            {
+                if (msg != "PONG")
+                    return;
+
+                duplexComplete.Set();
+            };
+
+            await client2.Start();
+            await client2.SendAsync("PING");
+            Assert.That(duplexComplete.Wait(10000));
+
+            await client2.StopAsync();
+            await server.StopAsync();
+
+            client2.Dispose();
+            server.Dispose();
+        }
+
+        [Test]
+        public async Task TestStartStopServerWithoutReceivingClients()
+        {
+            const int port = 54321;
+
+            var server = new WebSocketServer(port);
+            await server.StartAsync();
+            await server.StopAsync();
+            server.Dispose();
+        }
+    }
+}
@@ -147,7 +147,7 @@ namespace osu.Game.Tests.NonVisual

                    foreach (string file in osuStorage.IgnoreFiles)
                    {
-                        if (!file.Contains(".realm", StringComparison.Ordinal))
+                        if (!file.Contains(".realm", StringComparison.Ordinal) && !file.Contains("AuthNative", StringComparison.Ordinal))
                        {
                            Assert.That(File.Exists(Path.Combine(originalDirectory, file)));
                            Assert.That(storage.Exists(file), Is.False, () => $"{file} exists in destination when it was expected to be ignored");
@@ -660,7 +660,7 @@ namespace osu.Game.Tests.NonVisual.Filtering
            public bool Matches(BeatmapInfo beatmapInfo, FilterCriteria criteria) => match;
            public bool TryParseCustomKeywordCriteria(string key, Operator op, string value) => false;

-            public bool FilterMayChangeFromMods(ValueChangedEvent<IReadOnlyList<Mod>> mods) => false;
+            public bool FilterMayChangeFromMods(FilterCriteria criteria, ValueChangedEvent<IReadOnlyList<Mod>> mods) => false;
        }
    }
 }
@@ -559,7 +559,7 @@ namespace osu.Game.Tests.NonVisual.Filtering
                return false;
            }

-            public bool FilterMayChangeFromMods(ValueChangedEvent<IReadOnlyList<Mod>> mods) => false;
+            public bool FilterMayChangeFromMods(FilterCriteria criteria, ValueChangedEvent<IReadOnlyList<Mod>> mods) => false;
        }

        private static readonly object[] correct_date_query_examples =
@@ -128,6 +128,7 @@ namespace osu.Game.Tests.Visual.Editing
        }

        [Test]
+        [FlakyTest]
        public void TestLengthAndStarRatingUpdated()
        {
            WorkingBeatmap working = null;
@@ -24,6 +24,7 @@ namespace osu.Game.Tests.Visual.Editing
        }

        [Test]
+        [FlakyTest]
        public void TestLocallyModifyingOnlineBeatmap()
        {
            string initialHash = string.Empty;
@@ -4,7 +4,6 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Extensions;
-using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Database;
@@ -140,14 +139,16 @@ namespace osu.Game.Tests.Visual.Editing

        private void setUpEditor(RulesetInfo ruleset)
        {
-            BeatmapSetInfo beatmapSet = null!;
+            BeatmapSetInfo? beatmapSet = null;

            AddStep("Import test beatmap", () =>
                Game.BeatmapManager.Import(TestResources.GetTestBeatmapForImport()).WaitSafely()
            );
-            AddStep("Retrieve beatmap", () =>
-                beatmapSet = Game.BeatmapManager.QueryBeatmapSet(set => !set.Protected).AsNonNull().Value.Detach()
-            );
+            AddUntilStep("Retrieve beatmap", () =>
+            {
+                beatmapSet = Game.BeatmapManager.QueryBeatmapSet(set => !set.Protected)?.Value.Detach();
+                return beatmapSet != null;
+            });
            AddStep("Present beatmap", () => Game.PresentBeatmap(beatmapSet));
            AddUntilStep("Wait for song select", () =>
                Game.Beatmap.Value.BeatmapSetInfo.Equals(beatmapSet)
@@ -157,7 +158,7 @@ namespace osu.Game.Tests.Visual.Editing
            AddStep("Switch ruleset", () => Game.Ruleset.Value = ruleset);
            AddStep("Open editor for ruleset", () =>
                ((SoloSongSelect)Game.ScreenStack.CurrentScreen)
-                .Edit(beatmapSet.Beatmaps.Last(beatmap => beatmap.Ruleset.Name == ruleset.Name))
+                .Edit(beatmapSet!.Beatmaps.Last(beatmap => beatmap.Ruleset.Name == ruleset.Name))
            );
            AddUntilStep("Wait for editor open", () => editor?.ReadyForUse == true);
        }
@@ -82,11 +82,7 @@ namespace osu.Game.Tests.Visual.Gameplay
        {
            base.Update();

-            List<Vector2> vertices = new List<Vector2>();
-
-            path.GetPathToProgress(vertices, 0, 1);
-
-            drawablePath.Vertices = vertices;
+            drawablePath.Vertices = path.CalculatedPath;
            controlPointDrawablePath.Vertices = path.ControlPoints.Select(o => o.Position).ToList();

            if (controlPointDrawablePath.Vertices.Count > 0)
@@ -95,11 +91,7 @@ namespace osu.Game.Tests.Visual.Gameplay
                    drawablePath.PositionInBoundingBox(drawablePath.Vertices[0]) - controlPointDrawablePath.PositionInBoundingBox(controlPointDrawablePath.Vertices[0]);
            }

-            vertices.Clear();
-
-            convertedPath.GetPathToProgress(vertices, 0, 1);
-
-            convertedDrawablePath.Vertices = vertices;
+            convertedDrawablePath.Vertices = convertedPath.CalculatedPath;
            convertedControlPointDrawablePath.Vertices = convertedPath.ControlPoints.Select(o => o.Position).ToList();

            if (convertedControlPointDrawablePath.Vertices.Count > 0)
@@ -20,7 +20,7 @@ namespace osu.Game.Tests.Visual.Gameplay
        private bool seek;

        [Test]
-        [FlakyTest]
+        [Ignore("Still failing even with [FlakyTest] applied.")]
        public void TestAllSamplesStopDuringSeek()
        {
            DrawableSlider? slider = null;
@@ -211,7 +211,7 @@ namespace osu.Game.Tests.Visual.Gameplay
            AddStep("move mouse to centre of screen", () => InputManager.MoveMouseTo(Player.ScreenSpaceDrawQuad.Centre));
            AddUntilStep("wait for settings overlay hidden", () => settingsOverlay().Expanded.Value, () => Is.False);

-            PlayerSettingsOverlay settingsOverlay() => Player.ChildrenOfType<PlayerSettingsOverlay>().Single();
+            ReplaySettingsOverlay settingsOverlay() => Player.ChildrenOfType<ReplaySettingsOverlay>().Single();
        }

        private void loadPlayerWithBeatmap(IBeatmap? beatmap = null)
@@ -39,12 +39,7 @@ namespace osu.Game.Tests.Visual.Gameplay
            base.Update();

            if (path != null)
-            {
-                List<Vector2> vertices = new List<Vector2>();
-                path.GetPathToProgress(vertices, 0, 1);
-
-                drawablePath.Vertices = vertices;
-            }
+                drawablePath.Vertices = path.CalculatedPath;
        }

        [Test]
@@ -1,17 +1,19 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.

+using System;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Extensions;
 using osu.Framework.Testing;
-using osu.Framework.Utils;
-using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Matchmaking;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Online.Multiplayer.MatchTypes.RankedPlay;
+using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Intro;
 using osu.Game.Screens.OnlinePlay.Matchmaking.Queue;
 using osu.Game.Tests.Visual.Multiplayer;
-using osu.Game.Users;

 namespace osu.Game.Tests.Visual.Matchmaking
 {
@@ -27,24 +29,37 @@ namespace osu.Game.Tests.Visual.Matchmaking
        {
            base.SetUpSteps();

+            AddStep("join room", () => JoinRoom(CreateDefaultRoom(MatchType.Matchmaking)));
+            WaitForJoined();
+
            AddStep("load screen", () => LoadScreen(new ScreenIntro(MatchmakingPoolType.QuickPlay)));
+            AddUntilStep("wait for queue screen", () => queueScreen?.IsLoaded == true);
+
+            AddStep("send status update", () =>
+            {
+                int userId1 = Random.Shared.Next(1, 11);
+                int userId2 = Random.Shared.GetItems(Enumerable.Range(1, 10).Except([userId1]).ToArray(), 1).Single();
+
+                MultiplayerClient.MatchmakingLobbyStatusChanged(new MatchmakingLobbyStatus
+                {
+                    UsersInQueue = Enumerable.Range(1, 10).ToArray(),
+                    RatingDistribution = Enumerable.Range(0, 24).Select(i => (400 + i * 100, (int)Math.Round(generateCount(400 + i * 100, 1600, 400, 7200)))).ToArray(),
+                    UserRating = Random.Shared.Next(400, 2800),
+                    RecentMatches = Enumerable.Range(1, 10).Select(_ => (MatchRoomState)new RankedPlayRoomState
+                    {
+                        Users =
+                        {
+                            { userId1, new RankedPlayUserInfo { Rating = 0, Life = Random.Shared.Next(0, 1_000_001), RoundsWon = Random.Shared.Next(0, 4) } },
+                            { userId2, new RankedPlayUserInfo { Rating = 0, Life = Random.Shared.Next(0, 1_000_001), RoundsWon = Random.Shared.Next(0, 4) } },
+                        }
+                    }).ToArray()
+                }).WaitSafely();
+            });
        }

        [Test]
        public void TestBasic()
        {
-            AddUntilStep("wait for queue screen", () => queueScreen?.IsLoaded == true);
-
-            AddStep("set users", () =>
-            {
-                queueScreen!.Users = Enumerable.Range(0, 10).Select(_ => new APIUser
-                {
-                    Username = "peppy",
-                    Statistics = new UserStatistics { GlobalRank = 1234 },
-                    Id = RNG.Next(2, 30000000),
-                }).ToArray();
-            });
-
            AddStep("change state to idle", () => queueScreen!.SetState(ScreenQueue.MatchmakingScreenState.Idle));

            AddStep("change state to queueing", () => queueScreen!.SetState(ScreenQueue.MatchmakingScreenState.Queueing));
@@ -55,5 +70,26 @@ namespace osu.Game.Tests.Visual.Matchmaking

            AddStep("change state to in room", () => queueScreen!.SetState(ScreenQueue.MatchmakingScreenState.InRoom));
        }
+
+        [Test]
+        public void TestDelayedRoomScreenPushDoesNotRunIfRoomIsLeftPrematurely()
+        {
+            AddStep("change state to in room then immediately leave room", () =>
+            {
+                queueScreen!.SetState(ScreenQueue.MatchmakingScreenState.InRoom);
+                MultiplayerClient.LeaveRoom();
+            });
+
+            // the queue screen waits 2 seconds between transitioning to `InRoom` state and actually pushing the relevant screen.
+            // if the room goes to `null` in that time, things die very hard.
+            // therefore the wait here is to check that things don't die very hard.
+            // if they do the test will throw an exception and fail.
+            AddWaitStep("wait a little bit", 10);
+        }
+
+        private static double generateCount(double x, double mean, double stdDev, double amplitude)
+        {
+            return amplitude * Math.Exp(-Math.Pow(x - mean, 2) / (2 * Math.Pow(stdDev, 2))) + Random.Shared.Next(300);
+        }
    }
 }
@@ -0,0 +1,100 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Overlays;
+using osu.Game.Screens.OnlinePlay.Matchmaking.Queue;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.Matchmaking
+{
+    public partial class TestSceneRatingDistributionGraph : OsuTestScene
+    {
+        [Cached]
+        private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Plum);
+
+        private RatingDistributionGraph graph = null!;
+
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            Child = graph = new RatingDistributionGraph
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Both,
+                Size = new Vector2(0.5f, 0.25f)
+            };
+        });
+
+        [Test]
+        public void TestRandomData()
+        {
+            AddStep("set random data", () =>
+            {
+                List<(int x, int y)> values = new List<(int x, int y)>();
+                for (int i = 400; i <= 2800; i += 100)
+                    values.Add((i, (int)Math.Round(generateCount(i, 1600, 400, 7200))));
+                graph.SetData(values.ToArray(), Random.Shared.Next(400, 2800));
+            });
+        }
+
+        [Test]
+        public void TestNoUserRating()
+        {
+            AddStep("set data", () =>
+            {
+                List<(int x, int y)> values = new List<(int x, int y)>();
+                for (int i = 400; i <= 2800; i += 100)
+                    values.Add((i, (int)Math.Round(generateCount(i, 1600, 400, 7200))));
+                graph.SetData(values.ToArray(), null);
+            });
+        }
+
+        [Test]
+        public void TestNoData()
+        {
+            AddStep("set empty data", () => graph.SetData([], null));
+        }
+
+        [Test]
+        public void TestOutOfBoundsUserRating()
+        {
+            AddStep("set data with max user rating", () =>
+            {
+                List<(int x, int y)> values = new List<(int x, int y)>();
+                for (int i = 400; i <= 2800; i += 100)
+                    values.Add((i, (int)Math.Round(generateCount(i, 1600, 400, 7200))));
+
+                graph.SetData(values.ToArray(), 4000);
+            });
+
+            AddStep("set data with min user rating", () =>
+            {
+                List<(int x, int y)> values = new List<(int x, int y)>();
+                for (int i = 400; i <= 2800; i += 100)
+                    values.Add((i, (int)Math.Round(generateCount(i, 1600, 400, 7200))));
+
+                graph.SetData(values.ToArray(), 0);
+            });
+
+            AddStep("set data with only user rating", () =>
+            {
+                List<(int x, int y)> values = new List<(int x, int y)>();
+                for (int i = 400; i <= 2800; i += 100)
+                    values.Add((i, (int)Math.Round(generateCount(i, 1600, 400, 7200))));
+
+                graph.SetData([], 1500);
+            });
+        }
+
+        private static double generateCount(double x, double mean, double stdDev, double amplitude)
+        {
+            return amplitude * Math.Exp(-Math.Pow(x - mean, 2) / (2 * Math.Pow(stdDev, 2))) + Random.Shared.Next(300);
+        }
+    }
+}
@@ -331,7 +331,9 @@ namespace osu.Game.Tests.Visual.Multiplayer
                p.RequestResults = _ => resultsRequested = true;
            });

-            AddUntilStep("wait for load", () => playlist.ChildrenOfType<DrawableLinkCompiler>().Any() && playlist.ChildrenOfType<BeatmapCardThumbnail>().First().DrawWidth > 0);
+            AddUntilStep("wait for load", () => playlist.ChildrenOfType<DrawableLinkCompiler>().Any()
+                                                && playlist.ChildrenOfType<LinkFlowContainer>().First().ChildrenOfType<SpriteText>().Any()
+                                                && playlist.ChildrenOfType<BeatmapCardThumbnail>().First().DrawWidth > 0);

            AddStep("move mouse to first item title", () => InputManager.MoveMouseTo(playlist.ChildrenOfType<LinkFlowContainer>().First().ChildrenOfType<SpriteText>().First()));
            AddAssert("first item title not hovered", () => playlist.ChildrenOfType<DrawableLinkCompiler>().First().IsHovered, () => Is.False);
@@ -50,47 +50,6 @@ namespace osu.Game.Tests.Visual.Multiplayer
            Dependencies.CacheAs(ongoingOperationTracker = new OngoingOperationTracker());
            Dependencies.CacheAs(availabilityTracker.Object);

-            availabilityTracker.SetupGet(a => a.Availability).Returns(beatmapAvailability);
-
-            multiplayerClient.SetupGet(m => m.LocalUser).Returns(() => localUser);
-            multiplayerClient.SetupGet(m => m.Room).Returns(() => multiplayerRoom);
-
-            // By default, the local user is to be the host.
-            multiplayerClient.SetupGet(m => m.IsHost).Returns(() => ReferenceEquals(multiplayerRoom.Host, localUser));
-
-            // Assume all state changes are accepted by the server.
-            multiplayerClient.Setup(m => m.ChangeState(It.IsAny<MultiplayerUserState>()))
-                             .Callback((MultiplayerUserState r) =>
-                             {
-                                 Logger.Log($"Changing local user state from {localUser.State} to {r}");
-                                 localUser.State = r;
-                                 raiseRoomUpdated();
-                             });
-
-            multiplayerClient.Setup(m => m.StartMatch())
-                             .Callback(() =>
-                             {
-                                 multiplayerClient.Raise(m => m.LoadRequested -= null);
-
-                                 // immediately "end" gameplay, as we don't care about that part of the process.
-                                 changeUserState(localUser.UserID, MultiplayerUserState.Idle);
-                             });
-
-            multiplayerClient.Setup(m => m.SendMatchRequest(It.IsAny<MatchUserRequest>()))
-                             .Callback((MatchUserRequest request) =>
-                             {
-                                 switch (request)
-                                 {
-                                     case StartMatchCountdownRequest countdownStart:
-                                         setRoomCountdown(countdownStart.Duration);
-                                         break;
-
-                                     case StopCountdownRequest:
-                                         clearRoomCountdown();
-                                         break;
-                                 }
-                             });
-
            Children = new Drawable[]
            {
                ongoingOperationTracker,
@@ -103,10 +62,51 @@ namespace osu.Game.Tests.Visual.Multiplayer
        {
            AddStep("reset state", () =>
            {
-                multiplayerClient.Invocations.Clear();
+                multiplayerClient.Reset();
+                multiplayerClient.SetupGet(m => m.LocalUser).Returns(() => localUser);
+                multiplayerClient.SetupGet(m => m.Room).Returns(() => multiplayerRoom);
+
+                // By default, the local user is to be the host.
+                multiplayerClient.SetupGet(m => m.IsHost).Returns(() => ReferenceEquals(multiplayerRoom.Host, localUser));
+
+                // Assume all state changes are accepted by the server.
+                multiplayerClient.Setup(m => m.ChangeState(It.IsAny<MultiplayerUserState>()))
+                                 .Callback((MultiplayerUserState r) =>
+                                 {
+                                     Logger.Log($"Changing local user state from {localUser.State} to {r}");
+                                     localUser.State = r;
+                                     raiseRoomUpdated();
+                                 });
+
+                multiplayerClient.Setup(m => m.StartMatch())
+                                 .Callback(() =>
+                                 {
+                                     multiplayerClient.Raise(m => m.LoadRequested -= null);
+
+                                     // immediately "end" gameplay, as we don't care about that part of the process.
+                                     changeUserState(localUser.UserID, MultiplayerUserState.Idle);
+                                 });
+
+                multiplayerClient.Setup(m => m.SendMatchRequest(It.IsAny<MatchUserRequest>()))
+                                 .Callback((MatchUserRequest request) =>
+                                 {
+                                     switch (request)
+                                     {
+                                         case StartMatchCountdownRequest countdownStart:
+                                             setRoomCountdown(countdownStart.Duration);
+                                             break;
+
+                                         case StopCountdownRequest:
+                                             clearRoomCountdown();
+                                             break;
+                                     }
+                                 });

                beatmapAvailability.Value = BeatmapAvailability.LocallyAvailable();

+                availabilityTracker.Reset();
+                availabilityTracker.SetupGet(a => a.Availability).Returns(beatmapAvailability);
+
                PlaylistItem item = new PlaylistItem(Beatmap.Value.BeatmapInfo)
                {
                    RulesetID = Beatmap.Value.BeatmapInfo.Ruleset.OnlineID
@@ -375,6 +375,22 @@ namespace osu.Game.Tests.Visual.Multiplayer

        [Test]
        public void TestAbortMatch()
+        {
+            setUpMatchCallbacks();
+
+            // Ready
+            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+
+            // Start match
+            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+            AddUntilStep("countdown button disabled", () => !this.ChildrenOfType<MultiplayerCountdownButton>().Single().Enabled.Value);
+
+            // Abort
+            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+            AddStep("check abort request received", () => multiplayerClient.Verify(m => m.AbortMatch(), Times.Once));
+        }
+
+        private void setUpMatchCallbacks()
        {
            AddStep("setup client", () =>
            {
@@ -383,6 +399,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                                 {
                                     multiplayerClient.Raise(m => m.LoadRequested -= null);
                                     multiplayerClient.Object.Room!.State = MultiplayerRoomState.WaitingForLoad;
+                                     raiseRoomUpdated();

                                     // The local user state doesn't really matter, so let's do the same as the base implementation for these tests.
                                     changeUserState(localUser.UserID, MultiplayerUserState.Idle);
@@ -395,19 +412,133 @@ namespace osu.Game.Tests.Visual.Multiplayer
                                     raiseRoomUpdated();
                                 });
            });
+        }

-            // Ready
-            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+        [Test]
+        public void TestRefereeSpectating()
+        {
+            AddStep("set up referee", () =>
+            {
+                multiplayerClient.SetupGet(m => m.IsReferee).Returns(true);
+                multiplayerClient.SetupGet(m => m.IsHost).Returns(false);
+                multiplayerClient.Object.Room!.Users.Single().Role = MultiplayerRoomUserRole.Referee;
+                raiseRoomUpdated();
+            });

-            // Start match
+            const int users = 10;
+
+            AddStep("add many users", () =>
+            {
+                for (int i = 0; i < users; i++)
+                    addUser(new APIUser { Id = i, Username = "Another user" });
+            });
+            AddAssert("button disabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.False);
+
+            AddStep("move to spectate", () => changeUserState(multiplayerClient.Object.LocalUser!.UserID, MultiplayerUserState.Spectating));
+
+            AddStep("ready up a user", () => changeUserState(9, MultiplayerUserState.Ready));
+            AddAssert("button enabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.True);
+
+            setUpMatchCallbacks();
+
+            // start match
            ClickButtonWhenEnabled<MultiplayerReadyButton>();
            AddUntilStep("countdown button disabled", () => !this.ChildrenOfType<MultiplayerCountdownButton>().Single().Enabled.Value);

-            // Abort
+            // abort
            ClickButtonWhenEnabled<MultiplayerReadyButton>();
            AddStep("check abort request received", () => multiplayerClient.Verify(m => m.AbortMatch(), Times.Once));
        }

+        [Test]
+        public void TestRefereeFlowWithoutCountdown()
+        {
+            AddStep("set up referee", () =>
+            {
+                multiplayerClient.SetupGet(m => m.IsReferee).Returns(true);
+                multiplayerClient.SetupGet(m => m.IsHost).Returns(false);
+                multiplayerClient.Object.Room!.Users.Single().Role = MultiplayerRoomUserRole.Referee;
+                raiseRoomUpdated();
+            });
+
+            const int users = 10;
+
+            AddStep("add many users", () =>
+            {
+                for (int i = 0; i < users; i++)
+                    addUser(new APIUser { Id = i, Username = "Another user" });
+            });
+            AddAssert("button disabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.False);
+
+            AddStep("ready up a user", () => changeUserState(9, MultiplayerUserState.Ready));
+            AddAssert("button enabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.True);
+
+            setUpMatchCallbacks();
+
+            // start match
+            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+            AddUntilStep("countdown button disabled", () => !this.ChildrenOfType<MultiplayerCountdownButton>().Single().Enabled.Value);
+
+            // abort
+            ClickButtonWhenEnabled<MultiplayerReadyButton>();
+            AddStep("check abort request received", () => multiplayerClient.Verify(m => m.AbortMatch(), Times.Once));
+        }
+
+        [Test]
+        public void TestRefereeFlowWithCountdown()
+        {
+            AddStep("set up referee", () =>
+            {
+                multiplayerClient.SetupGet(m => m.IsReferee).Returns(true);
+                multiplayerClient.SetupGet(m => m.IsHost).Returns(false);
+                multiplayerClient.Object.Room!.Users.Single().Role = MultiplayerRoomUserRole.Referee;
+                raiseRoomUpdated();
+            });
+
+            const int users = 10;
+
+            AddStep("add many users", () =>
+            {
+                for (int i = 0; i < users; i++)
+                    addUser(new APIUser { Id = i, Username = "Another user" });
+            });
+            AddAssert("button disabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.False);
+
+            AddStep("ready up a user", () => changeUserState(9, MultiplayerUserState.Ready));
+            AddAssert("button enabled", () => this.ChildrenOfType<MultiplayerReadyButton>().Single().Enabled.Value, () => Is.True);
+
+            setUpMatchCallbacks();
+
+            AddUntilStep("countdown button shown", () => this.ChildrenOfType<MultiplayerCountdownButton>().SingleOrDefault()?.IsPresent == true);
+            ClickButtonWhenEnabled<MultiplayerCountdownButton>();
+            AddStep("click the first countdown button", () =>
+            {
+                var popoverButton = this.ChildrenOfType<Popover>().Single().ChildrenOfType<OsuButton>().First();
+                InputManager.MoveMouseTo(popoverButton);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddStep("check request received", () =>
+            {
+                multiplayerClient.Verify(m => m.SendMatchRequest(It.Is<StartMatchCountdownRequest>(req =>
+                    req.Duration == TimeSpan.FromSeconds(10)
+                )), Times.Once);
+            });
+
+            ClickButtonWhenEnabled<MultiplayerCountdownButton>();
+            AddStep("click the cancel button", () =>
+            {
+                var popoverButton = this.ChildrenOfType<Popover>().Single().ChildrenOfType<OsuButton>().Last();
+                InputManager.MoveMouseTo(popoverButton);
+                InputManager.Click(MouseButton.Left);
+            });
+
+            AddStep("check request received", () =>
+            {
+                multiplayerClient.Verify(m => m.SendMatchRequest(It.IsAny<StopCountdownRequest>()), Times.Once);
+            });
+        }
+
        private void verifyGameplayStartFlow()
        {
            checkLocalUserState(MultiplayerUserState.Ready);
@@ -156,7 +156,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
            // components wrapped in skinnable target containers load asynchronously, potentially taking more than one frame to load.
            // therefore use until step rather than direct assert to account for that.
            AddUntilStep("all interactive elements removed", () => this.ChildrenOfType<Player>().All(p =>
-                !p.ChildrenOfType<PlayerSettingsOverlay>().Any() &&
+                !p.ChildrenOfType<ReplaySettingsOverlay>().Any() &&
                !p.ChildrenOfType<HoldForMenuButton>().Any() &&
                p.ChildrenOfType<ArgonSongProgressBar>().SingleOrDefault()?.Interactive == false));

@@ -662,7 +662,7 @@ namespace osu.Game.Tests.Visual.Multiplayer

            AddStep("invoke on back button", () => multiplayerComponents.OnBackButton());

-            AddAssert("mod overlay is hidden", () => this.ChildrenOfType<MultiplayerUserModSelectOverlay>().Single().State.Value == Visibility.Hidden);
+            AddAssert("mod overlay is hidden", () => this.ChildrenOfType<MultiplayerUserModSelectOverlay>().All(o => o.State.Value == Visibility.Hidden));

            AddAssert("dialog overlay is hidden", () => DialogOverlay.State.Value == Visibility.Hidden);

--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				{"Mappings":[{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":125.0,"Objects":[{"StartTime":125.0,"EndTime":125.0,"Column":1}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":250.0,"Objects":[{"StartTime":250.0,"EndTime":250.0,"Column":2}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":375.0,"Objects":[{"StartTime":375.0,"EndTime":375.0,"Column":3}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":500.0,"Objects":[{"StartTime":500.0,"EndTime":500.0,"Column":4}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":625.0,"Objects":[{"StartTime":625.0,"EndTime":625.0,"Column":5}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":750.0,"Objects":[{"StartTime":750.0,"EndTime":750.0,"Column":6}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":875.0,"Objects":[{"StartTime":875.0,"EndTime":875.0,"Column":7}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":1000.0,"Objects":[{"StartTime":1000.0,"EndTime":1000.0,"Column":8}]},{"RandomW":273326509,"RandomX":511,"RandomY":842502087,"RandomZ":3579807591,"StartTime":1125.0,"Objects":[{"StartTime":1125.0,"EndTime":1125.0,"Column":9}]}]}
				`@@ -0,0 +1 @@`
				`{"Mappings":[{"RandomW":273326509,"RandomX":331,"RandomY":842502087,"RandomZ":3579807591,"StartTime":0.0,"Objects":[{"StartTime":0.0,"EndTime":0.0,"Column":0}]}]}`