diff --git a/src/bin/flappy/main.rs b/src/bin/flappy/main.rs
index 7580d23..378f1ef 100644
--- a/src/bin/flappy/main.rs
+++ b/src/bin/flappy/main.rs
@@ -41,6 +41,10 @@ fn init_bird(
         commands.spawn((name, mesh, material, mass, t, Bird, force));
 }
 
+// TODO: Create floor (and ceiling?)
+// Q: Move bird + camera or move world around bird & camera?
+// TODO: Obstacles
+
 fn flap(
     keyboard: Res<ButtonInput<KeyCode>>,
     mut bird: Query<(&Transform, &mut ExternalForce), With<Bird>>,