Halo: Reach Player Counts by Mode (Campaign, Firefight, Multiplayer)

Player Limits

• Campaign: Designed for solo; co-op supports 2 players (not 4).
• Firefight: Up to 4 players cooperative survival.
• Multiplayer: Up to 16 players depending on mode (Team Slayer, CTF, Oddball, King of the Hill, etc.).

Custom Games

Host sets player limit via lobby settings (max 16).

Correction: Campaign co-op is 2 players max, not solo-only as previously stated.