We have a very similar game with a green cube platformer haha! The mechanics are a bit confusing but I like how you interpret the theme. it's just a bit annoying that the level reset every time I accidentally press 'a'. There's a lot of room for improvement like how you can't jump if you are on the edge and if you need to time your movement to the right otherwise you'll get stuck.
I couldn't figure out the third level(with a glowing ball). Anyway great game with a cool theme, and GREEN CUBE.