Nice game the mechanics felt good, I like some of the features that you included, such as the Fullscreen and BGM buttons. I've noticed something a bit odd though, it seems like if the game is played in the smaller window a lot of the jumps become impossible, its only in Fullscreen that the jumps become possible. Am I crazy? Also it might feel better if the tail was not part of the squirrel's collider since it feels like you can stay on for a lot longer than you should. Anyway fun game and good work.