Browse and share competitive maps. Submissions include maps usually seen in matchmaking or at gaming tournaments.
Typical gametypes: Swat, Slayer, Objective.

Browse and share MLG maps. Submissions include maps usually seen at MLG tournaments or in their matchmaking playlist.
Typical gametypes: MLG.

Browse and share casual maps. Submissions include maps that mainly focus on relaxing and having fun, and may require honor rules.
Typical gametypes: Tremors, Cat N' Mouse, Infection.

Browse and share race maps. Submissions may or may not require honor rules.
Typical gametypes: Battle Tracks, RACETRACKS, Raceway.

Browse and share mini game maps. Submissions generally subvert typical Halo gameplay, and often mimic the small games seen on the Mario Party or Fusion Frenzy series.
Classic examples: Hobo Heights, The Swings, Teamwerks.

Browse and share aesthetic maps. Submissions usually recreate scenes or objects from everyday life or works of fiction.
This category also supports Machinima movie sets.

Browse and share custom gametypes. Successful submissions are original, fun and often inspire others to create maps based on their use.
Classic examples: Conquest, In The Shadows, Clue.