Tetris

Tetris is a 1989 puzzle video game developed and published by Nintendo for the Nintendo Entertainment System (NES). Based on Tetris (1985) by Alexey Pajitnov, it was released after a legal battle between Nintendo and Atari Games, who had previously released a console port outside of the terms of their Tetris license. Bullet-Proof Software had previously released Tetris for the Family Computer in December 1988, while Nintendo had released Tetris for the Game Boy earlier in 1989. Nintendo licensed exclusive home console rights for the Tetris intellectual property from Soviet authorities, leaving Atari Games unaware that they did not possess these rights from their own license.