A fighting game (also referre as a versus fighting game, competitive fighting game, tournament fighting game or head-to-head fighting game) is a sub-genre of action games and is one of the major video game genres. In a fighting game, players face off against each other or against computer-controlled characters in close combat. The main distinction between this genre and the beat 'em up genre is that players are of roughly equal power to their opponents, and fights are self-contained matches involving a limited number of characters. While not defining traits of the genre, the vast majority of fighting games involve life bars, fights that last an odd number of rounds, and are viewed in profile.