Monday Morning Manager is a fairly detailed baseball simulation. Each player designs their own 25-man team by selecting base types (e.g., right-handed singles hitter) and then purchasing upgrades and abilities; the players are given limited bankrolls for this purpose. After designing their teams the players select lineups and play the game using the player statistics, charts, and die rolls. Additional rules are provided for seasonal play; if playing a season the teams need to change their lineups from game to game and rules are also provided for injuries, hot streaks and slumps, and mid-season replacements.