Two-on-One

Two-on-One is a minigame in the Game Boy Color version of Mario Tennis. The game involes playing as Bowser against two opponents, Wario and Waluigi, at the same time. In level 1, the rules are like a 1-set match of six games. In level 2, the rules are like a 3-set match of six games. In level 3, the rules are like a 5-set match of six games.