Players challenge the other teams, beating the other four opens the path to Bowser's castle. The secondary purpose of defeating other teams is to recruit other characters to improve ones team. On opposing teams, each character has a set of scouting flags. During the game players will have mission objectives like "Strike 'em out", or "Score a run", that earn flags; if one gets all the flags of a particular character and wins the game, that character will be recruited. If the player fails to complete a mission, he/she must wait for a while to complete another mission. Flags are cumulative, so if the player doesn't get all the flags in a game, or loses the game after getting all the flags, the flags earned will remain when the team is challenged again; a team can be challenged as long as the captain of the team is not recruited. Players of a different color can't be recruited and can only be played in minigames and playing with the teams they start on.