diff --git a/design.md b/design.md
index 64b3b9d..80a2334 100644
--- a/design.md
+++ b/design.md
@@ -50,8 +50,15 @@ It's all mantle level specific biomes all the way horizontally.
   - At least 50 stone types
   - Maybe background tiles and other stuff, like different break overlay animations
 
-  # Multiplayer
 
-  Multiplayer adds a lot of complexity, so I'm going to develop the prototype of the game without
-  any multiplayer support.
-  But if people like the general idea, they can help create a multiplayer version eventually.
+# Multiplayer
+
+Multiplayer adds a lot of complexity, so I'm going to develop the prototype of the game without
+any multiplayer support.
+But if people like the general idea, they can help create a multiplayer version eventually.
+
+# Supported platforms
+- Windows
+- Linux
+
+Other platforms can be supported if community helps support them.