Tetris (Tengen)

Released in 1989, Tengens Tetris for the Nintendo Entertainment System was released before Nintendos version of Tetris and wasnt licensed by Nintendo. Befores Nintendos release of their version of Tetris. Tengen sued Nintendo of America for the IP rights for control of Tetris and to allow only themselves to sell their version of the game for the Nintendo Entertainment System and not by Nintendo. Nintendo counter-sued Tengen. Nintendo won their counterclaim against Tengen and it caused Nintendo t...