The player's goal is to travel through multiple levels, but with limited platforms available. In space levels, there are even fewer platforms, and the player must use controlled jumps to hit them. The platforms come in different heights, indicated by their size - larger ones are higher, which means more force when landing.
The levels loop until the player finds a hidden heart within the question mark blocks. But be warned: there are also enemies to avoid or shoot with your gun. These can leave behind power-ups that improve your jumping height, speed, or ammo.