Hammer Ball is a physics-based action in which you destroy enemies by swinging a melee weapon. At the start of the game, you must choose one of three abilities: an extra saw, slow motion, or laser turrets. You can't change this ability, so choose wisely! Use your melee weapon and special ability to clear each stage of enemies. Collect repair kits, shields, and other items that are left behind by destroyed enemies. Destroying enemies also gives you cash for upgrades.