diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs
new file mode 100644
index 0000000000..a573dd492c
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/AimEvaluator.cs
@@ -0,0 +1,10 @@
+// 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.
+
+namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
+{
+    public class AimEvaluator
+    {
+        
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs
new file mode 100644
index 0000000000..83b6cc75dd
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/FlashlightEvaluator.cs
@@ -0,0 +1,10 @@
+// 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.
+
+namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
+{
+    public class FlashlightEvaluator
+    {
+        
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/RhythmEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/RhythmEvaluator.cs
new file mode 100644
index 0000000000..0dd16f7313
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/RhythmEvaluator.cs
@@ -0,0 +1,10 @@
+// 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.
+
+namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
+{
+    public class RhythmEvaluator
+    {
+        
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/Difficulty/Evaluators/SpeedEvaluator.cs b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/SpeedEvaluator.cs
new file mode 100644
index 0000000000..84a39d8f9b
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Difficulty/Evaluators/SpeedEvaluator.cs
@@ -0,0 +1,10 @@
+// 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.
+
+namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
+{
+    public class SpeedEvaluator
+    {
+        
+    }
+}