The main antagonists of the game are hordes of evil skeletons who want to enslave the world. The player is armed only with a slingshot, from which they can shoot at them. With each hit, the skeleton will collapse and their skulls will fall to the ground. The player must collect the skulls so they can get bonuses. The player can control the angle of fire, so they can shoot at both those skeletons that are directly near them and those that are far away.