diff --git a/DESIGN.md b/DESIGN.md
new file mode 100644
index 0000000..98f8e39
--- /dev/null
+++ b/DESIGN.md
@@ -0,0 +1,52 @@
+Server objects
+----
+
+ * Server
+   * Users
+   * Rooms
+   * Settings
+
+ * User
+   * Name
+   * Stuff
+   * Settings
+     * Keybindings
+ * Room
+   * Games
+   * Users
+   * Chat(?)
+   * Settings
+ * Game
+   * Settings
+     * Speed
+     * Number of players
+   * Players
+   * Map
+   * Score table
+   * Game state
+     * unstarted, running, finished, paused(?)
+     * Player state
+       * Alive/dead/...
+       * Trail
+       * Position
+       * Velocity
+       * Boost active
+       * Boost fuel
+ * Map
+   * Walls
+
+Client objects
+----
+
+ * Client
+   * Server
+   * User
+   * State (room list, in room, in game)
+
+ * User
+   * (same as server)
+
+ * Game
+   * (same as server)
+
+ * Game update