Project Justice is the sequel to Rival Schools: United By Fate. Project Justice's fighting system is lifted from the original Rival Schools, with some notable changes. The game continues to be a team fighter, but has teams of three characters instead of two. This allows another Team-Up attack to be used in a fight, but also adds a new type of attack, the Party-Up, initiated by pressing any three attack buttons. The Party-Up is a three-person attack that varies based on what school the character initiating the attack is from. The additional partner also allows players to cancel an opponent's Team-Up Special by inputting a Team-Up command of their own. This initiates a short fighting sequence between one character from each team. If the person initiating the sequence gets the first successful hit in during the sequence before time runs out, the Team-Up they are caught in will be canceled, and the game switches back to the main fight; if the opposing player gets the first hit or time runs out, the Team-Up ...