Bump is a small platformer in which you have to fight your way to the dungeon where your princess is being held captive.
Before getting there, you must fight enemies, jump across dangerous pits and find 10 keys to open the castle.
Use Space to Jump and Double Jump.
Click left to change direction.
Jump on top of the enemies to knock them!
Even if you don't get to the castle, you have the option to save your score and fight to get on the highscore!