This puzzle game was developed and published by Bullet-Proof Software, and in 1992 it was released apparently also as a standalone arcade console.

Hatris game play is quite like Tetris (which was designed by the same person, Pazhitnov). Only in Tetris the game objects are falling from the top of the screen and must be set in exact patterns in order to gain points and keep the play area clear. As to Hatris, it has got different hat styles falling from the top and accumulating at the bottom. To remove those hats from the play area, the player must stack five hats of identical style. Since these different style hats stack in a different ways, the game strategy must be considered thoroughly. In order to make progress in the game and succeed at “Hatris”, you have to use the help of Bruce, a small, bearded man. He will steal 2 hats, once you achieve a certain level of charisma.