Nyet 3: The Revenge of the Mutant Stones

NYet 3 (which may or may not be related to NYet) is a Tetris clone that goes way beyond the standard Tetris formula by adding a huge variety of different level variations. You earn money for clearing the levels, which you can use to buy powerups or the ability to save your game. This is a game for hardcore Tetris players and/or people who want a very challenging game, as the Ross' Game Dungeon NYet 3 video shows quite nicely. Definitely and innovative and challenging game, but also not one that many people would have the patience to get through!