That music is super catchy!
I enjoyed the pace of the game. It is quickly fun and challenging. The boss fight at the end was a great surprise (is this SkiFree again!?), as well as the second level. I wish there was a checkpoint between the two. The boss fights are really harsh, and I lose quickly against them unless I'm being really agressive and lucky.
The sense of progress is well managed! I like that you can only see part of the level around you when you're small, even though it makes the very beginning kinda confusing to read.
Congrats for making this game!