Hatris

Hatris is a puzzle video game developed by Alexey Pajitnov, the creator of the famous video game Tetris. In Hatris, the falling blocks of Tetris are replaced by falling hats, which are top hats, cowboy hats, baseball caps, derbies, party hats and crowns. The setting is a hat factory, where two hats at a time must fall from a conveyor belt and be stacked on one of six mannequins. Once five hats of the same type are stacked on top of each other, they fall onto another conveyor belt and are shipped out of the factory, rewarding the player with a cash bonus (the game counts points as money, not just points). Once you have shipped enough hats out of the factory, you move up one level to the next factory. The higher the number of the store, the more types of hats appear, making it harder for you to complete your task. The game ends when one of your piles of hats reaches the top of the screen.