diff --git a/osu.Android.props b/osu.Android.props
index 85e8cb9ceb..969eb205e0 100644
--- a/osu.Android.props
+++ b/osu.Android.props
@@ -51,7 +51,6 @@
     <None Include="$(MSBuildThisFileDirectory)\osu.licenseheader">
       <Link>osu.licenseheader</Link>
     </None>
-    <AndroidNativeLibrary Include="$(OutputPath)\**\*.so" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModHidden.cs b/osu.Game.Rulesets.Osu/Mods/OsuModHidden.cs
index 2d940479f3..32c9e913c6 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModHidden.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModHidden.cs
@@ -17,7 +17,9 @@ namespace osu.Game.Rulesets.Osu.Mods
     {
         public override string Description => @"Play with no approach circles and fading circles/sliders.";
         public override double ScoreMultiplier => 1.06;
-        public override Type[] IncompatibleMods => new[] { typeof(OsuModSpinIn) };
+
+        public override Type[] IncompatibleMods => new[] { typeof(OsuModTraceable), typeof(OsuModSpinIn) };
+
         private const double fade_in_duration_multiplier = 0.4;
         private const double fade_out_duration_multiplier = 0.3;
 
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs b/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
index 62b5ecfd58..e786ec86f9 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModSpinIn.cs
@@ -26,7 +26,7 @@ namespace osu.Game.Rulesets.Osu.Mods
         public override double ScoreMultiplier => 1;
 
         // todo: this mod should be able to be compatible with hidden with a bit of further implementation.
-        public override Type[] IncompatibleMods => new[] { typeof(OsuModeObjectScaleTween), typeof(OsuModHidden) };
+        public override Type[] IncompatibleMods => new[] { typeof(OsuModeObjectScaleTween), typeof(OsuModHidden), typeof(OsuModTraceable) };
 
         private const int rotate_offset = 360;
         private const float rotate_starting_width = 2;
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs
new file mode 100644
index 0000000000..7e20feba02
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTraceable.cs
@@ -0,0 +1,73 @@
+// 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 osu.Framework.Bindables;
+using System.Collections.Generic;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Configuration;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Osu.Mods
+{
+    internal class OsuModTraceable : Mod, IReadFromConfig, IApplicableToDrawableHitObjects
+    {
+        public override string Name => "Traceable";
+        public override string Acronym => "TC";
+        public override IconUsage Icon => FontAwesome.Brands.SnapchatGhost;
+        public override ModType Type => ModType.Fun;
+        public override string Description => "Put your faith in the approach circles...";
+        public override double ScoreMultiplier => 1;
+
+        public override Type[] IncompatibleMods => new[] { typeof(OsuModHidden), typeof(OsuModSpinIn), typeof(OsuModeObjectScaleTween) };
+        private Bindable<bool> increaseFirstObjectVisibility = new Bindable<bool>();
+
+        public void ReadFromConfig(OsuConfigManager config)
+        {
+            increaseFirstObjectVisibility = config.GetBindable<bool>(OsuSetting.IncreaseFirstObjectVisibility);
+        }
+
+        public void ApplyToDrawableHitObjects(IEnumerable<DrawableHitObject> drawables)
+        {
+            foreach (var drawable in drawables.Skip(increaseFirstObjectVisibility.Value ? 1 : 0))
+                drawable.ApplyCustomUpdateState += ApplyTraceableState;
+        }
+
+        protected void ApplyTraceableState(DrawableHitObject drawable, ArmedState state)
+        {
+            if (!(drawable is DrawableOsuHitObject drawableOsu))
+                return;
+
+            var h = drawableOsu.HitObject;
+
+            switch (drawable)
+            {
+                case DrawableHitCircle circle:
+                    // we only want to see the approach circle
+                    using (circle.BeginAbsoluteSequence(h.StartTime - h.TimePreempt, true))
+                        circle.CirclePiece.Hide();
+
+                    break;
+
+                case DrawableSlider slider:
+                    slider.AccentColour.BindValueChanged(_ =>
+                    {
+                        //will trigger on skin change.
+                        slider.Body.AccentColour = slider.AccentColour.Value.Opacity(0);
+                        slider.Body.BorderColour = slider.AccentColour.Value;
+                    }, true);
+
+                    break;
+
+                case DrawableSpinner spinner:
+                    spinner.Disc.Hide();
+                    spinner.Background.Hide();
+                    break;
+            }
+        }
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModeObjectScaleTween.cs b/osu.Game.Rulesets.Osu/Mods/OsuModeObjectScaleTween.cs
index e926ade41b..923278f484 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModeObjectScaleTween.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModeObjectScaleTween.cs
@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Osu.Mods
 
         private Bindable<bool> increaseFirstObjectVisibility = new Bindable<bool>();
 
-        public override Type[] IncompatibleMods => new[] { typeof(OsuModSpinIn) };
+        public override Type[] IncompatibleMods => new[] { typeof(OsuModSpinIn), typeof(OsuModTraceable) };
 
         public void ReadFromConfig(OsuConfigManager config)
         {
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
index 83646c561d..c90f230f93 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs
@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
     public class DrawableHitCircle : DrawableOsuHitObject, IDrawableHitObjectWithProxiedApproach
     {
-        public ApproachCircle ApproachCircle;
+        public ApproachCircle ApproachCircle { get; }
 
         private readonly IBindable<Vector2> positionBindable = new Bindable<Vector2>();
         private readonly IBindable<int> stackHeightBindable = new Bindable<int>();
@@ -30,7 +30,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
         private readonly HitArea hitArea;
 
-        private readonly SkinnableDrawable mainContent;
+        public SkinnableDrawable CirclePiece { get; }
 
         public DrawableHitCircle(HitCircle h)
             : base(h)
@@ -59,7 +59,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                                 return true;
                             },
                         },
-                        mainContent = new SkinnableDrawable(new OsuSkinComponent(OsuSkinComponents.HitCircle), _ => new MainCirclePiece(HitObject.IndexInCurrentCombo)),
+                        CirclePiece = new SkinnableDrawable(new OsuSkinComponent(OsuSkinComponents.HitCircle), _ => new MainCirclePiece(HitObject.IndexInCurrentCombo)),
                         ApproachCircle = new ApproachCircle
                         {
                             Alpha = 0,
@@ -133,7 +133,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             base.UpdateInitialTransforms();
 
-            mainContent.FadeInFromZero(HitObject.TimeFadeIn);
+            CirclePiece.FadeInFromZero(HitObject.TimeFadeIn);
 
             ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadeIn * 2, HitObject.TimePreempt));
             ApproachCircle.ScaleTo(1f, HitObject.TimePreempt);
diff --git a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
index 08b43b0345..643a0f7336 100644
--- a/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs
@@ -163,9 +163,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
         private float sliderPathRadius;
 
-        protected override void SkinChanged(ISkinSource skin, bool allowFallback)
+        protected override void ApplySkin(ISkinSource skin, bool allowFallback)
         {
-            base.SkinChanged(skin, allowFallback);
+            base.ApplySkin(skin, allowFallback);
 
             Body.BorderSize = skin.GetConfig<OsuSkinConfiguration, float>(OsuSkinConfiguration.SliderBorderSize)?.Value ?? SliderBody.DEFAULT_BORDER_SIZE;
             sliderPathRadius = skin.GetConfig<OsuSkinConfiguration, float>(OsuSkinConfiguration.SliderPathRadius)?.Value ?? OsuHitObject.OBJECT_RADIUS;
diff --git a/osu.Game.Rulesets.Osu/OsuRuleset.cs b/osu.Game.Rulesets.Osu/OsuRuleset.cs
index df2ae81a5a..fa69cec78d 100644
--- a/osu.Game.Rulesets.Osu/OsuRuleset.cs
+++ b/osu.Game.Rulesets.Osu/OsuRuleset.cs
@@ -139,6 +139,7 @@ namespace osu.Game.Rulesets.Osu
                         new OsuModSpinIn(),
                         new MultiMod(new OsuModGrow(), new OsuModDeflate()),
                         new MultiMod(new ModWindUp(), new ModWindDown()),
+                        new OsuModTraceable(),
                     };
 
                 case ModType.System:
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneFailJudgement.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneFailJudgement.cs
index d57ec44f39..cca6301b02 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneFailJudgement.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneFailJudgement.cs
@@ -6,8 +6,6 @@ using System.Linq;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
-using osu.Game.Rulesets.UI;
-using osu.Game.Scoring;
 using osu.Game.Screens.Play;
 
 namespace osu.Game.Tests.Visual.Gameplay
@@ -17,9 +15,7 @@ namespace osu.Game.Tests.Visual.Gameplay
         protected override Player CreatePlayer(Ruleset ruleset)
         {
             Mods.Value = Array.Empty<Mod>();
-
-            var beatmap = Beatmap.Value.GetPlayableBeatmap(ruleset.RulesetInfo, Array.Empty<Mod>());
-            return new FailPlayer(ruleset.GetAutoplayMod().CreateReplayScore(beatmap));
+            return new FailPlayer();
         }
 
         protected override void AddCheckSteps()
@@ -29,16 +25,12 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddAssert("total judgements == 1", () => ((FailPlayer)Player).ScoreProcessor.JudgedHits == 1);
         }
 
-        private class FailPlayer : ReplayPlayer
+        private class FailPlayer : TestPlayer
         {
-            public new DrawableRuleset DrawableRuleset => base.DrawableRuleset;
-
             public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
 
-            protected override bool PauseOnFocusLost => false;
-
-            public FailPlayer(Score score)
-                : base(score, false, false)
+            public FailPlayer()
+                : base(false, false)
             {
             }
 
diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneReplay.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneReplay.cs
index 3fbce9d43c..36335bc54a 100644
--- a/osu.Game.Tests/Visual/Gameplay/TestSceneReplay.cs
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneReplay.cs
@@ -26,12 +26,14 @@ namespace osu.Game.Tests.Visual.Gameplay
         {
             AddUntilStep("score above zero", () => ((ScoreAccessibleReplayPlayer)Player).ScoreProcessor.TotalScore.Value > 0);
             AddUntilStep("key counter counted keys", () => ((ScoreAccessibleReplayPlayer)Player).HUDOverlay.KeyCounter.Children.Any(kc => kc.CountPresses > 0));
+            AddAssert("cannot fail", () => !((ScoreAccessibleReplayPlayer)Player).AllowFail);
         }
 
         private class ScoreAccessibleReplayPlayer : ReplayPlayer
         {
             public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
             public new HUDOverlay HUDOverlay => base.HUDOverlay;
+            public new bool AllowFail => base.AllowFail;
 
             protected override bool PauseOnFocusLost => false;
 
diff --git a/osu.Game/Overlays/Music/PlaylistList.cs b/osu.Game/Overlays/Music/PlaylistList.cs
index 539601c359..5b528c5ab2 100644
--- a/osu.Game/Overlays/Music/PlaylistList.cs
+++ b/osu.Game/Overlays/Music/PlaylistList.cs
@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Events;
@@ -18,7 +19,6 @@ namespace osu.Game.Overlays.Music
     public class PlaylistList : CompositeDrawable
     {
         public Action<BeatmapSetInfo> Selected;
-        public Action<BeatmapSetInfo, int> OrderChanged;
 
         private readonly ItemsScrollContainer items;
 
@@ -28,7 +28,6 @@ namespace osu.Game.Overlays.Music
             {
                 RelativeSizeAxes = Axes.Both,
                 Selected = set => Selected?.Invoke(set),
-                OrderChanged = (s, i) => OrderChanged?.Invoke(s, i)
             };
         }
 
@@ -45,13 +44,17 @@ namespace osu.Game.Overlays.Music
         private class ItemsScrollContainer : OsuScrollContainer
         {
             public Action<BeatmapSetInfo> Selected;
-            public Action<BeatmapSetInfo, int> OrderChanged;
 
             private readonly SearchContainer search;
             private readonly FillFlowContainer<PlaylistItem> items;
 
             private readonly IBindable<WorkingBeatmap> beatmapBacking = new Bindable<WorkingBeatmap>();
 
+            private IBindableList<BeatmapSetInfo> beatmaps;
+
+            [Resolved]
+            private MusicController musicController { get; set; }
+
             public ItemsScrollContainer()
             {
                 Children = new Drawable[]
@@ -73,27 +76,35 @@ namespace osu.Game.Overlays.Music
             }
 
             [BackgroundDependencyLoader]
-            private void load(BeatmapManager beatmaps, IBindable<WorkingBeatmap> beatmap)
+            private void load(IBindable<WorkingBeatmap> beatmap)
             {
-                beatmaps.GetAllUsableBeatmapSets().ForEach(addBeatmapSet);
-                beatmaps.ItemAdded += addBeatmapSet;
-                beatmaps.ItemRemoved += removeBeatmapSet;
+                beatmaps = musicController.BeatmapSets.GetBoundCopy();
+                beatmaps.ItemsAdded += i => i.ForEach(addBeatmapSet);
+                beatmaps.ItemsRemoved += i => i.ForEach(removeBeatmapSet);
+                beatmaps.ForEach(addBeatmapSet);
 
                 beatmapBacking.BindTo(beatmap);
                 beatmapBacking.ValueChanged += _ => updateSelectedSet();
             }
 
-            private void addBeatmapSet(BeatmapSetInfo obj) => Schedule(() =>
+            private void addBeatmapSet(BeatmapSetInfo obj)
             {
-                items.Insert(items.Count - 1, new PlaylistItem(obj) { OnSelect = set => Selected?.Invoke(set) });
-            });
+                if (obj == draggedItem?.BeatmapSetInfo) return;
 
-            private void removeBeatmapSet(BeatmapSetInfo obj) => Schedule(() =>
+                Schedule(() => items.Insert(items.Count - 1, new PlaylistItem(obj) { OnSelect = set => Selected?.Invoke(set) }));
+            }
+
+            private void removeBeatmapSet(BeatmapSetInfo obj)
             {
-                var itemToRemove = items.FirstOrDefault(i => i.BeatmapSetInfo.ID == obj.ID);
-                if (itemToRemove != null)
-                    items.Remove(itemToRemove);
-            });
+                if (obj == draggedItem?.BeatmapSetInfo) return;
+
+                Schedule(() =>
+                {
+                    var itemToRemove = items.FirstOrDefault(i => i.BeatmapSetInfo.ID == obj.ID);
+                    if (itemToRemove != null)
+                        items.Remove(itemToRemove);
+                });
+            }
 
             private void updateSelectedSet()
             {
@@ -112,6 +123,8 @@ namespace osu.Game.Overlays.Music
             private Vector2 nativeDragPosition;
             private PlaylistItem draggedItem;
 
+            private int? dragDestination;
+
             protected override bool OnDragStart(DragStartEvent e)
             {
                 nativeDragPosition = e.ScreenSpaceMousePosition;
@@ -131,10 +144,17 @@ namespace osu.Game.Overlays.Music
             protected override bool OnDragEnd(DragEndEvent e)
             {
                 nativeDragPosition = e.ScreenSpaceMousePosition;
-                var handled = draggedItem != null || base.OnDragEnd(e);
-                draggedItem = null;
 
-                return handled;
+                if (draggedItem == null)
+                    return base.OnDragEnd(e);
+
+                if (dragDestination != null)
+                    musicController.ChangeBeatmapSetPosition(draggedItem.BeatmapSetInfo, dragDestination.Value);
+
+                draggedItem = null;
+                dragDestination = null;
+
+                return true;
             }
 
             protected override void Update()
@@ -210,7 +230,7 @@ namespace osu.Game.Overlays.Music
                 }
 
                 items.SetLayoutPosition(draggedItem, dstIndex);
-                OrderChanged?.Invoke(draggedItem.BeatmapSetInfo, dstIndex);
+                dragDestination = dstIndex;
             }
 
             private class ItemSearchContainer : FillFlowContainer<PlaylistItem>, IHasFilterableChildren
diff --git a/osu.Game/Overlays/Music/PlaylistOverlay.cs b/osu.Game/Overlays/Music/PlaylistOverlay.cs
index ec3d708645..ae81a6c117 100644
--- a/osu.Game/Overlays/Music/PlaylistOverlay.cs
+++ b/osu.Game/Overlays/Music/PlaylistOverlay.cs
@@ -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;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -22,12 +21,6 @@ namespace osu.Game.Overlays.Music
         private const float transition_duration = 600;
         private const float playlist_height = 510;
 
-        /// <summary>
-        /// Invoked when the order of an item in the list has changed.
-        /// The second parameter indicates the new index of the item.
-        /// </summary>
-        public Action<BeatmapSetInfo, int> OrderChanged;
-
         private readonly Bindable<WorkingBeatmap> beatmap = new Bindable<WorkingBeatmap>();
         private BeatmapManager beatmaps;
 
@@ -65,7 +58,6 @@ namespace osu.Game.Overlays.Music
                             RelativeSizeAxes = Axes.Both,
                             Padding = new MarginPadding { Top = 95, Bottom = 10, Right = 10 },
                             Selected = itemSelected,
-                            OrderChanged = (s, i) => OrderChanged?.Invoke(s, i)
                         },
                         filter = new FilterControl
                         {
diff --git a/osu.Game/Overlays/MusicController.cs b/osu.Game/Overlays/MusicController.cs
index 6ad147735b..db94b0278f 100644
--- a/osu.Game/Overlays/MusicController.cs
+++ b/osu.Game/Overlays/MusicController.cs
@@ -8,6 +8,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Input.Bindings;
+using osu.Framework.MathUtils;
 using osu.Framework.Threading;
 using osu.Game.Beatmaps;
 using osu.Game.Input.Bindings;
@@ -24,7 +25,9 @@ namespace osu.Game.Overlays
         [Resolved]
         private BeatmapManager beatmaps { get; set; }
 
-        private List<BeatmapSetInfo> beatmapSets;
+        public IBindableList<BeatmapSetInfo> BeatmapSets => beatmapSets;
+
+        private readonly BindableList<BeatmapSetInfo> beatmapSets = new BindableList<BeatmapSetInfo>();
 
         public bool IsUserPaused { get; private set; }
 
@@ -46,7 +49,7 @@ namespace osu.Game.Overlays
         [BackgroundDependencyLoader]
         private void load()
         {
-            beatmapSets = beatmaps.GetAllUsableBeatmapSets();
+            beatmapSets.AddRange(beatmaps.GetAllUsableBeatmapSets().OrderBy(_ => RNG.Next()));
             beatmaps.ItemAdded += handleBeatmapAdded;
             beatmaps.ItemRemoved += handleBeatmapRemoved;
         }
@@ -140,7 +143,7 @@ namespace osu.Game.Overlays
         {
             queuedDirection = TrackChangeDirection.Prev;
 
-            var playable = beatmapSets.TakeWhile(i => i.ID != current.BeatmapSetInfo.ID).LastOrDefault() ?? beatmapSets.LastOrDefault();
+            var playable = BeatmapSets.TakeWhile(i => i.ID != current.BeatmapSetInfo.ID).LastOrDefault() ?? BeatmapSets.LastOrDefault();
 
             if (playable != null)
             {
@@ -165,7 +168,7 @@ namespace osu.Game.Overlays
             if (!instant)
                 queuedDirection = TrackChangeDirection.Next;
 
-            var playable = beatmapSets.SkipWhile(i => i.ID != current.BeatmapSetInfo.ID).Skip(1).FirstOrDefault() ?? beatmapSets.FirstOrDefault();
+            var playable = BeatmapSets.SkipWhile(i => i.ID != current.BeatmapSetInfo.ID).Skip(1).FirstOrDefault() ?? BeatmapSets.FirstOrDefault();
 
             if (playable != null)
             {
@@ -200,8 +203,8 @@ namespace osu.Game.Overlays
                 else
                 {
                     //figure out the best direction based on order in playlist.
-                    var last = beatmapSets.TakeWhile(b => b.ID != current.BeatmapSetInfo?.ID).Count();
-                    var next = beatmap.NewValue == null ? -1 : beatmapSets.TakeWhile(b => b.ID != beatmap.NewValue.BeatmapSetInfo?.ID).Count();
+                    var last = BeatmapSets.TakeWhile(b => b.ID != current.BeatmapSetInfo?.ID).Count();
+                    var next = beatmap.NewValue == null ? -1 : BeatmapSets.TakeWhile(b => b.ID != beatmap.NewValue.BeatmapSetInfo?.ID).Count();
 
                     direction = last > next ? TrackChangeDirection.Prev : TrackChangeDirection.Next;
                 }
diff --git a/osu.Game/Overlays/NowPlayingOverlay.cs b/osu.Game/Overlays/NowPlayingOverlay.cs
index cf42c8005a..6b79f2af07 100644
--- a/osu.Game/Overlays/NowPlayingOverlay.cs
+++ b/osu.Game/Overlays/NowPlayingOverlay.cs
@@ -81,7 +81,6 @@ namespace osu.Game.Overlays
                         {
                             RelativeSizeAxes = Axes.X,
                             Y = player_height + 10,
-                            OrderChanged = musicController.ChangeBeatmapSetPosition
                         },
                         playerContainer = new Container
                         {
diff --git a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
index 00b57f7249..b94de0df89 100644
--- a/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
+++ b/osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs
@@ -240,7 +240,7 @@ namespace osu.Game.Rulesets.Objects.Drawables
 
         #endregion
 
-        protected override void SkinChanged(ISkinSource skin, bool allowFallback)
+        protected sealed override void SkinChanged(ISkinSource skin, bool allowFallback)
         {
             base.SkinChanged(skin, allowFallback);
 
@@ -250,6 +250,20 @@ namespace osu.Game.Rulesets.Objects.Drawables
 
                 AccentColour.Value = comboColours?.Count > 0 ? comboColours[combo.ComboIndex % comboColours.Count] : Color4.White;
             }
+
+            ApplySkin(skin, allowFallback);
+
+            if (IsLoaded)
+                updateState(State.Value, true);
+        }
+
+        /// <summary>
+        /// Called when a change is made to the skin.
+        /// </summary>
+        /// <param name="skin">The new skin.</param>
+        /// <param name="allowFallback">Whether fallback to default skin should be allowed if the custom skin is missing this resource.</param>
+        protected virtual void ApplySkin(ISkinSource skin, bool allowFallback)
+        {
         }
 
         /// <summary>
diff --git a/osu.Game/Screens/Play/Player.cs b/osu.Game/Screens/Play/Player.cs
index dac5561a45..44be73b089 100644
--- a/osu.Game/Screens/Play/Player.cs
+++ b/osu.Game/Screens/Play/Player.cs
@@ -86,6 +86,12 @@ namespace osu.Game.Screens.Play
         [Cached(Type = typeof(IBindable<IReadOnlyList<Mod>>))]
         protected new readonly Bindable<IReadOnlyList<Mod>> Mods = new Bindable<IReadOnlyList<Mod>>(Array.Empty<Mod>());
 
+        /// <summary>
+        /// Whether failing should be allowed.
+        /// By default, this checks whether all selected mods allow failing.
+        /// </summary>
+        protected virtual bool AllowFail => Mods.Value.OfType<IApplicableFailOverride>().All(m => m.AllowFail);
+
         private readonly bool allowPause;
         private readonly bool showResults;
 
@@ -360,9 +366,7 @@ namespace osu.Game.Screens.Play
 
         private bool onFail()
         {
-            var failOverrideMods = Mods.Value.OfType<IApplicableFailOverride>();
-
-            if (failOverrideMods.Any(m => !m.AllowFail))
+            if (!AllowFail)
                 return false;
 
             HasFailed = true;
@@ -374,7 +378,8 @@ namespace osu.Game.Screens.Play
                 PauseOverlay.Hide();
 
             failAnimation.Start();
-            if (failOverrideMods.Any(m => m.RestartOnFail))
+
+            if (Mods.Value.OfType<IApplicableFailOverride>().Any(m => m.RestartOnFail))
                 Restart();
 
             return true;
diff --git a/osu.Game/Screens/Play/ReplayPlayer.cs b/osu.Game/Screens/Play/ReplayPlayer.cs
index a9c0ee3a15..b040549efc 100644
--- a/osu.Game/Screens/Play/ReplayPlayer.cs
+++ b/osu.Game/Screens/Play/ReplayPlayer.cs
@@ -9,6 +9,9 @@ namespace osu.Game.Screens.Play
     {
         private readonly Score score;
 
+        // Disallow replays from failing. (see https://github.com/ppy/osu/issues/6108)
+        protected override bool AllowFail => false;
+
         public ReplayPlayer(Score score, bool allowPause = true, bool showResults = true)
             : base(allowPause, showResults)
         {
diff --git a/osu.Game/Skinning/DefaultLegacySkin.cs b/osu.Game/Skinning/DefaultLegacySkin.cs
index 98f158c725..4b6eea6b6e 100644
--- a/osu.Game/Skinning/DefaultLegacySkin.cs
+++ b/osu.Game/Skinning/DefaultLegacySkin.cs
@@ -13,6 +13,13 @@ namespace osu.Game.Skinning
             : base(Info, storage, audioManager, string.Empty)
         {
             Configuration.CustomColours["SliderBall"] = new Color4(2, 170, 255, 255);
+            Configuration.ComboColours.AddRange(new[]
+            {
+                new Color4(255, 192, 0, 255),
+                new Color4(0, 202, 0, 255),
+                new Color4(18, 124, 255, 255),
+                new Color4(242, 24, 57, 255),
+            });
         }
 
         public static SkinInfo Info { get; } = new SkinInfo