Blast the massive floating head out of the way in Head Shot, a hilariously weird shooter game. There's a giant head floating around on the other end of each level. While you often won't be able to get a direct shot at this wacky monstrosity, you can use other elements in the levels - platforms, arrows, portals, etc. - to redirect your bullets and work your way around the obstacles. You have a single bullet to blow up the levitating noggin, but you can retry each level as many times as you like.