Nice - very simple, you had an idea and executed it well! I got third on the leaderboard :) the presentation is lovely, you've chosen your colours and fonts well. there's not too much to say here, it's light, it's fun, it has all the features I'd expect, and it looks great! Theme implementation is a little bit shaky, the shape limitation is implemented well but it doesn't really feel like you thought about "limited space" too hard. Not a major complaint, though :) one other minor nitpick is that it would be nice to have a satisfying animation for shape switching - morphing between the two shapes, or maybe one shrinks as the other expands, rotations, anything like that to transition between the states would improve the game feel!