This is a really well made game. The idea is well executed, the game is fun and the music is just perfect.
I noticed that the maze is generated procedurally, and I'm a big fan of that decision, for it reduces the feeling of revisiting the same place over and over again. Maybe the only thing that is a bit lacking is some sort of player feedback, but I can't really complain about this in a game made in 7 days and with a folder size of 7Mb(!!).