Really fun game and well done, I would've made the second level be the third level but aside that it's a cool and entertainig game.
Pointing out some bugs like the ball would not jump again when touching the flooer as @rborgars pointed out, also the world sometimes in any jump just fly away at the speed of light, but I think this could be a feature haha, like add the rng into the game haha!
I really liked it and enjoyed, thank you for doing this game.