Tetris X, released for PlayStation in Japan, is notable for being the first game officially released for a non-Nintendo console, after the Tetris rights reverted to Alexey Pajitnov in 1996. The Tetris Company had been set up and had signed an agreement with Sony, giving a three year licensing right for the release of Tetris on the PlayStation in both Japan and the US. The game features a "Classic" single player mode, and a competitive "Battle" mode that allows up to 4 players to compete against each other.