diff --git a/osu.Game.Rulesets.Mania.Tests/ManiaFilterCriteriaTest.cs b/osu.Game.Rulesets.Mania.Tests/ManiaFilterCriteriaTest.cs
index 24da447482..a7686c7320 100644
--- a/osu.Game.Rulesets.Mania.Tests/ManiaFilterCriteriaTest.cs
+++ b/osu.Game.Rulesets.Mania.Tests/ManiaFilterCriteriaTest.cs
@@ -175,7 +175,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         }
 
         [TestCase]
-        public void TestInvalidFilters()
+        public void TestInvalidKeysFilters()
         {
             var criteria = new ManiaFilterCriteria();
 
@@ -183,5 +183,227 @@ namespace osu.Game.Rulesets.Mania.Tests
             Assert.False(criteria.TryParseCustomKeywordCriteria("keys", Operator.NotEqual, "4,some text"));
             Assert.False(criteria.TryParseCustomKeywordCriteria("keys", Operator.GreaterOrEqual, "4,5,6"));
         }
+
+        [TestCase]
+        public void TestLnsEqualSingleValue()
+        {
+            var criteria = new ManiaFilterCriteria();
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "50");
+            BeatmapInfo beatmapInfo1 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 50
+            };
+            Assert.True(criteria.Matches(beatmapInfo1, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "0");
+            BeatmapInfo beatmapInfo2 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 0,
+                EndTimeObjectCount = 0
+            };
+            Assert.True(criteria.Matches(beatmapInfo2, new FilterCriteria()));
+
+            BeatmapInfo beatmapInfo3 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 0
+            };
+            Assert.True(criteria.Matches(beatmapInfo3, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "1");
+            BeatmapInfo beatmapInfo4 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo4, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "100");
+            BeatmapInfo beatmapInfo5 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 100
+            };
+            Assert.True(criteria.Matches(beatmapInfo5, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "0.1");
+            BeatmapInfo beatmapInfo6 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 1000,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo6, new FilterCriteria()));
+        }
+
+        [TestCase]
+        public void TestLnsNotEqual()
+        {
+            var criteria = new ManiaFilterCriteria();
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "50");
+            BeatmapInfo beatmapInfo1 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 50
+            };
+            Assert.False(criteria.Matches(beatmapInfo1, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "0");
+            BeatmapInfo beatmapInfo2 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 0,
+                EndTimeObjectCount = 0
+            };
+            Assert.False(criteria.Matches(beatmapInfo2, new FilterCriteria()));
+
+            BeatmapInfo beatmapInfo3 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 0
+            };
+            Assert.False(criteria.Matches(beatmapInfo3, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "1");
+            BeatmapInfo beatmapInfo4 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 1
+            };
+            Assert.False(criteria.Matches(beatmapInfo4, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "100");
+            BeatmapInfo beatmapInfo5 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 100
+            };
+            Assert.False(criteria.Matches(beatmapInfo5, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "0.1");
+            BeatmapInfo beatmapInfo6 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 1000,
+                EndTimeObjectCount = 1
+            };
+            Assert.False(criteria.Matches(beatmapInfo6, new FilterCriteria()));
+        }
+
+        [TestCase]
+        public void TestLnsGreaterOrEqual()
+        {
+            var criteria = new ManiaFilterCriteria();
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "50");
+            BeatmapInfo beatmapInfo1 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 50
+            };
+            Assert.True(criteria.Matches(beatmapInfo1, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "0");
+            BeatmapInfo beatmapInfo2 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 0,
+                EndTimeObjectCount = 0
+            };
+            Assert.True(criteria.Matches(beatmapInfo2, new FilterCriteria()));
+
+            BeatmapInfo beatmapInfo3 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 0
+            };
+            Assert.True(criteria.Matches(beatmapInfo3, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "1");
+            BeatmapInfo beatmapInfo4 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo4, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "100");
+            BeatmapInfo beatmapInfo5 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 100
+            };
+            Assert.True(criteria.Matches(beatmapInfo5, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "0.1");
+            BeatmapInfo beatmapInfo6 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 1000,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo6, new FilterCriteria()));
+        }
+
+        [TestCase]
+        public void TestLnsGreater()
+        {
+            var criteria = new ManiaFilterCriteria();
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Greater, "49");
+            BeatmapInfo beatmapInfo1 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 50
+            };
+            Assert.True(criteria.Matches(beatmapInfo1, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Greater, "0");
+            BeatmapInfo beatmapInfo2 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 0,
+                EndTimeObjectCount = 0
+            };
+            Assert.False(criteria.Matches(beatmapInfo2, new FilterCriteria()));
+
+            BeatmapInfo beatmapInfo3 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 0
+            };
+            Assert.False(criteria.Matches(beatmapInfo3, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Greater, "0.5");
+            BeatmapInfo beatmapInfo4 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo4, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Greater, "99");
+            BeatmapInfo beatmapInfo5 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 100,
+                EndTimeObjectCount = 100
+            };
+            Assert.True(criteria.Matches(beatmapInfo5, new FilterCriteria()));
+
+            criteria.TryParseCustomKeywordCriteria("lns", Operator.Greater, "0.01");
+            BeatmapInfo beatmapInfo6 = new BeatmapInfo(new ManiaRuleset().RulesetInfo)
+            {
+                TotalObjectCount = 1000,
+                EndTimeObjectCount = 1
+            };
+            Assert.True(criteria.Matches(beatmapInfo6, new FilterCriteria()));
+        }
+
+        [TestCase]
+        public void TestInvalidLnsFilters()
+        {
+            var criteria = new ManiaFilterCriteria();
+
+            Assert.False(criteria.TryParseCustomKeywordCriteria("lns", Operator.Equal, "some text"));
+            Assert.False(criteria.TryParseCustomKeywordCriteria("lns", Operator.NotEqual, "50,some text"));
+            Assert.False(criteria.TryParseCustomKeywordCriteria("lns", Operator.GreaterOrEqual, "1some text"));
+        }
     }
 }