diff --git a/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs b/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
index 83deac78a1..13a21c5c55 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
@@ -88,7 +88,12 @@ namespace osu.Game.Rulesets.Osu.Difficulty
 
         private double computeAimValue()
         {
-            double aimValue = Math.Pow(5.0f * Math.Max(1.0f, Attributes.AimStrain / 0.0675f) - 4.0f, 3.0f) / 100000.0f;
+            double rawAim = Attributes.AimStrain;
+
+            if (mods.Any(m => m is OsuModTouchDevice))
+                rawAim = Math.Pow(rawAim, 0.8);
+
+            double aimValue = Math.Pow(5.0f * Math.Max(1.0f, rawAim / 0.0675f) - 4.0f, 3.0f) / 100000.0f;
 
             // Longer maps are worth more
             double lengthBonus = 0.95f + 0.4f * Math.Min(1.0f, totalHits / 2000.0f) +
diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTouchDevice.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTouchDevice.cs
new file mode 100644
index 0000000000..7c476a49c0
--- /dev/null
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTouchDevice.cs
@@ -0,0 +1,14 @@
+// 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.Rulesets.Mods;
+
+namespace osu.Game.Rulesets.Osu.Mods
+{
+    public class OsuModTouchDevice : Mod
+    {
+        public override string Name => "Touch Device";
+        public override string Acronym => "TD";
+        public override double ScoreMultiplier => 1;
+    }
+}
diff --git a/osu.Game.Rulesets.Osu/OsuRuleset.cs b/osu.Game.Rulesets.Osu/OsuRuleset.cs
index 9415adc411..12d0a28a8f 100644
--- a/osu.Game.Rulesets.Osu/OsuRuleset.cs
+++ b/osu.Game.Rulesets.Osu/OsuRuleset.cs
@@ -82,6 +82,9 @@ namespace osu.Game.Rulesets.Osu
 
             if (mods.HasFlag(LegacyMods.Target))
                 yield return new OsuModTarget();
+
+            if (mods.HasFlag(LegacyMods.TouchDevice))
+                yield return new OsuModTouchDevice();
         }
 
         public override IEnumerable<Mod> GetModsFor(ModType type)