Neat entry ! Very good job ! I love the main mechanic, the levels were very well crafted with a nice difficulty curve, there were a LOT of levels (more than what I expected from a game jam !) and it was an enjoyable experience overall ^^ !
I have two minor complains : the characters accelerate very slowly, making some jumps unnecessary hard to do (some of them aren't even possible if you stop to think before the jump), and the white text is quite hard to read.
Otherwise, this is a very good idea with a solid execution. Congratulations =) !