Really cool game and very simple!
I would have enjoyed it even more if the soundeffects wouldn't have been so loud tbh. I think the sound that it made when getting back on the track was really satisfying, but the jumping sound annoyed me a little.
The graphics are simple but very effective and the gameplay is also very simple. I think this game has potential if you add more of a target for the player like collecting things or choosing the right track to not get hit by monsters etc.
But for a 3 hour game jam really really nice! Congratulations!