diff --git a/osu.Desktop/DiscordRichPresence.cs b/osu.Desktop/DiscordRichPresence.cs
index 3642f70a56..fe687e8dab 100644
--- a/osu.Desktop/DiscordRichPresence.cs
+++ b/osu.Desktop/DiscordRichPresence.cs
@@ -108,10 +108,7 @@ namespace osu.Desktop
                 presence.Assets.LargeImageText = $"{user.Value.Username}" + (user.Value.Statistics?.GlobalRank > 0 ? $" (rank #{user.Value.Statistics.GlobalRank:N0})" : string.Empty);
 
             // update ruleset
-            int onlineID = ruleset.Value.OnlineID;
-            bool isLegacyRuleset = onlineID >= 0 && onlineID <= ILegacyRuleset.MAX_LEGACY_RULESET_ID;
-
-            presence.Assets.SmallImageKey = isLegacyRuleset ? $"mode_{onlineID}" : "mode_custom";
+            presence.Assets.SmallImageKey = ruleset.Value.IsLegacyRuleset ? $"mode_{ruleset.Value.OnlineID}" : "mode_custom";
             presence.Assets.SmallImageText = ruleset.Value.Name;
 
             client.SetPresence(presence);
diff --git a/osu.Game/Beatmaps/DifficultyRecommender.cs b/osu.Game/Beatmaps/DifficultyRecommender.cs
index 3949e84f4a..8c3e832293 100644
--- a/osu.Game/Beatmaps/DifficultyRecommender.cs
+++ b/osu.Game/Beatmaps/DifficultyRecommender.cs
@@ -83,7 +83,7 @@ namespace osu.Game.Beatmaps
             requestedUserId = api.LocalUser.Value.Id;
 
             // only query API for built-in rulesets
-            rulesets.AvailableRulesets.Where(ruleset => ruleset.OnlineID >= 0 && ruleset.OnlineID <= ILegacyRuleset.MAX_LEGACY_RULESET_ID).ForEach(rulesetInfo =>
+            rulesets.AvailableRulesets.Where(ruleset => ruleset.IsLegacyRuleset).ForEach(rulesetInfo =>
             {
                 var req = new GetUserRequest(api.LocalUser.Value.Id, rulesetInfo);
 
diff --git a/osu.Game/Rulesets/IRulesetInfo.cs b/osu.Game/Rulesets/IRulesetInfo.cs
index 60a02212fc..a8ed1683c2 100644
--- a/osu.Game/Rulesets/IRulesetInfo.cs
+++ b/osu.Game/Rulesets/IRulesetInfo.cs
@@ -29,5 +29,10 @@ namespace osu.Game.Rulesets
         string InstantiationInfo { get; }
 
         Ruleset CreateInstance();
+
+        /// <summary>
+        /// Whether this ruleset's online ID is within the range that defines it as a legacy ruleset (ie. either osu!, osu!taiko, osu!catch or osu!mania).
+        /// </summary>
+        public bool IsLegacyRuleset => OnlineID >= 0 && OnlineID <= ILegacyRuleset.MAX_LEGACY_RULESET_ID;
     }
 }
diff --git a/osu.Game/Rulesets/RulesetInfo.cs b/osu.Game/Rulesets/RulesetInfo.cs
index 88e3988431..cf7d84c2b4 100644
--- a/osu.Game/Rulesets/RulesetInfo.cs
+++ b/osu.Game/Rulesets/RulesetInfo.cs
@@ -91,6 +91,11 @@ namespace osu.Game.Rulesets
             Available = Available
         };
 
+        /// <summary>
+        /// Whether this ruleset's online ID is within the range that defines it as a legacy ruleset (ie. either osu!, osu!taiko, osu!catch or osu!mania).
+        /// </summary>
+        public bool IsLegacyRuleset => ((IRulesetInfo)this).IsLegacyRuleset;
+
         public Ruleset CreateInstance()
         {
             if (!Available)
diff --git a/osu.Game/Screens/Play/SoloPlayer.cs b/osu.Game/Screens/Play/SoloPlayer.cs
index 824c0072e3..b877ee1c11 100644
--- a/osu.Game/Screens/Play/SoloPlayer.cs
+++ b/osu.Game/Screens/Play/SoloPlayer.cs
@@ -7,7 +7,6 @@ using osu.Game.Beatmaps;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Online.Solo;
-using osu.Game.Rulesets;
 using osu.Game.Scoring;
 
 namespace osu.Game.Screens.Play
@@ -32,7 +31,7 @@ namespace osu.Game.Screens.Play
             if (beatmapId <= 0)
                 return null;
 
-            if (rulesetId < 0 || rulesetId > ILegacyRuleset.MAX_LEGACY_RULESET_ID)
+            if (!Ruleset.Value.IsLegacyRuleset)
                 return null;
 
             return new CreateSoloScoreRequest(beatmapId, rulesetId, Game.VersionHash);
diff --git a/osu.Game/Screens/Select/Leaderboards/BeatmapLeaderboard.cs b/osu.Game/Screens/Select/Leaderboards/BeatmapLeaderboard.cs
index 6daaae9d04..95910ed0aa 100644
--- a/osu.Game/Screens/Select/Leaderboards/BeatmapLeaderboard.cs
+++ b/osu.Game/Screens/Select/Leaderboards/BeatmapLeaderboard.cs
@@ -118,7 +118,7 @@ namespace osu.Game.Screens.Select.Leaderboards
                 return null;
             }
 
-            if (fetchRuleset.OnlineID <= 0 || fetchRuleset.OnlineID > ILegacyRuleset.MAX_LEGACY_RULESET_ID)
+            if (!fetchRuleset.IsLegacyRuleset)
             {
                 SetErrorState(LeaderboardState.RulesetUnavailable);
                 return null;