The object of the game is to position the falling shapes, Tetraminoes, across the bottom of a rectangular pit. Tetraminoes are shapes created from four blocks joined together into seven different patterns. The Tetraminoes must be rotated as they fall, and positioned across the bottom leaving no open spaces. When an entire horizontal line fills with blocks, the line clears from the screen. If lines are not completely filled with blocks, they will not clear from the screen, and the Tetraminoes will continue to stack up higher and higher. If the stack of Tetraminoes reaches the top, the game is over! Tetris Worlds places the player in a universe where Tetris is played in different ways on different planets. The inhabitants of these worlds (Minos) interact with the player and with each other. Test your Tetris skills in the most popular versions of Tetris, or the latest cutting-edge variations, such as Gadget Tetris and Bombtris. If you aren't addicted to Tetris, you must be living under a rock! The facts

• Tetris is the world's best selling electronic game. Over 50 million licensed copies of Tetris have been sold worldwide over the past 10+ years.
• Tetris games have appeared on nearly every game platform available. No other electronic game has demonstrated the longevity and universal appeal of this simple, yet addictive puzzle game.
• Because the concept is so simple, anyone can play. And it seems that almost everyone does! Unlike many other computer games, Tetris appeals to men and women alike.
• Single player game inlcudes seven modes of gameplay, which take place within seven different worlds. Each world has unique rules for playing Tetris.
• Multiplayer game lets up to four players, either online or offline, see who can clear levels the fastest.
• Increasing levels of complexity and difficulty as players complete each level.
• Simple gameplay, easy to pick up without instruction, and completely addictive!
• Cinematics involving the Mino characters and evolving backgrounds motivate players to clear levels.
• Chat and challenge others via the established community at www.tetris.com.