The basic (read: default) gameplay involves two combatants needing to win two of three rounds, with each round being 30 seconds long. If a character is knocked out (or falls out) of the ring, the opponent wins the round. A fourth round is necessary if a double knockout (both players knocking each other out at the same time) occurred in a previous round and the match is tied one round each. In this fourth round, players fight on a small stage wherein one hit equals victory. Its control scheme is deceptively simple, using only a control stick and 3 buttons (Punch, Kick, Guard); however, through various timings, positions, and button combinations, players unlocked a bevy of moves for each character. Traditionally, in the single-player mode, the player runs a gauntlet of characters in the game (which may include one's doppelganger) all the way to the final boss.