tetris
tetris
Tetris is a tile-matching video game created by Russian software engineer Alexey Pajitnov in 1984. Players complete lines by moving differently shaped pieces called tetrominoes, which descend onto the playing field. The completed lines disappear, granting points. The game ends when the playing field is filled. In multiplayer, players must outlast their opponents. Tetris has sold 202 million copies as of December 2011 and is available on over 65 platforms, making it one of the best-selling video game franchises. The game's influence extends to architecture, music, and research studies, known for phenomena like the Tetris effect.
Instructions
In Tetris, the goal is to place pieces made up of four tiles in a ten-by-twenty well, organizing them into complete rows, which disappear. As rows are cleared, the game speeds up; the game ends if the stack reaches the top. The NES version offers 'Type A' mode, an endless game where speed increases every ten lines, and 'Type B', a race to clear 25 lines. Use the joystick icon in the Tetris online emulator to see control details.
Game History
Tetris was published by several companies, notably during a rights dispute in the late 1980s. Nintendo prominently published it until the rights reverted to Pajitnov in 1996. He co-founded The Tetris Company with Henk Rogers. Notable is the Game Boy version, which sold over 35 million copies. Tetris set a Guinness World Record for being the most ported video game. Various adaptations include 3D displays and piece-reserving systems.