TetFun 2000: World Championship - Version 2.25 TetFun 2000 is a very nice Tetris game. It also includes Pentix, a popular variation of Tetris that's more complicated, game with bombs and four modes of gaming (Classic, Timer, Rising and World Championship). By playing this game you can take part in the TetFun World Championship in the Internet ! There are many different block sets. TetFun 2000 has a very comfortable keyboard control. You can change key sensitivity and the background color can also be changed to you liking. You can save your game at any moment.