Ultimate is a non-contact sport played by two seven player teams. The object of the game is to score goals. The disc may only be moved by passing as the thrower is not allowed to take any steps. Any time a pass is incomplete, intercepted, knocked-down, or contacts an out-of-bounds area, a turnover occurs, resulting in an immediate change of possession of the disc. A goal is scored when a player successfully passes the disc to a teammate in the endzone which that team is attacking.