Just use the arrow keys. Please read the notes and credits! If I reach 10 likes and favorites, I'll add more levels!
Huge thanks to @Joshipants for the physics, which is the reason I was even able to put a pony there with working physics! Changes: I changed the cube into a neigh pony, made it and the ground smaller, and I also made it so that when you use the arrow keys many colorful clones will trail from it. I hid the variables so that there is more space to bounce your rainbow pony too! Please like and favorite if you've enjoyed it!