Bastard tetris

Bastard Tetris, or Bastet for short, is a version of Tetris that was included with the Linux operating system. The main difference between Bastard Tetris and other versions of Tetris is that Bastard Tetris does not use a traditional Random Generator; instead, the game chooses Tetrominoes based on what the player does not need. In other words, the game actively tries to make it more difficult for the player by giving him or her pieces that are not needed and that are harmful. Despite this frustration Bastet is far from impossible, and players can still form plenty of lines.