Really nice entry for a gamejam. What I loved:
1) actually awesome menu screen - people might think that it doesn't necessarily need to be polished but hey, cmon, this is the very first thing player sees when he launches your game. You want his attention don't you?
2) endless style - I love this kind of games for a jam as you can score higher and higher every attempt.
3) utilization of an artset - well used assets. Everything looks just like it was supposed to be there
4) UI - I totally loved it. Simple but charming.