Nice game! I think 4 hours is amazing, however, maybe a bit more time to give the game some love would do good. I found myself stuck at the 4th level maybe? The music is a bit repetitive. HOWEVER, I must cut you slack, and admit, I would 100% not be able to make this level of a game in that short amount of time! I hope it doesn't sound like I'm downgrading your game, I just want to make a few notes on things to tweak. Besides slack, I truly believe this game has a LOT of potential and I quite like the concept! Nice work, I wish you luck! ;3