Tetris has been around since 1984 and was the most popular game on Nintendo's Game Boy platform which was released in 1989. Since then, it has appeared on many other platforms and is considered one of the greatest video games of all time. In 2006, Nintendo released the now hard to come by Tetris DS which allowed up to ten players to compete locally or online. Since the DS online functionality has been disabled, that game has lost a majority of its charm. Ubisoft has taken the baton and has further enhanced the classic game in Tetris Ultimate.