

Other notables use of Tetris include: art medium (see Tetris Building), algorithmic exercises (see Tetris AI), and even testing equipment (as the game originally was made to do). Sometimes these games infringed on copyright and/or trademark, though nevertheless a number of them have fostered a large user base and have achieved some cultural importance. There are many fan made derivatives of Tetris. The list below includes both licensed uses and uses by developers who have also made an official Tetris game. Legal disputes make it unclear which early games used the name or suffix legally. Some games used the Tetris name or its ' -tris' suffix in their titles, despite their distinctively different gameplay. Tetris The Grand Master 4 The Masters of Round.

This list contains games made after Elorg no longer had any ownership of The Tetris Company. * Sega Ages 2500 Series Vol.28 Tetris Collection

This list includes both licensed games and those developed under the pretense of having a license. This list includes games released before the first commercial versions were available. 6 Notable fan games and unlicensed games.
