Home
Member Content
Blog
Cimmarian Music
Discord Membership
Feb 28, 2026
Play 12 Player Co-Op For Space Marines 2!

This mod lets you play with up to 12 players in any PvE game mode, which for now means Operations and Siege ModeClass Restrictions have been removed, and Checkpoints enabled so that you can be whoever you want, playing with whoever you want, and fail as many times as you want, without having to wait to load back into a mission.

Get the mod here!

Space Marines 2 12 Player Co-Op Mod

Important Notes:

  • Other players will not appear aboard the Battle Barge.
  • The host must start the game.
  • All players must stand inside the Ready-Up zone to launch the mission.
  • All players need this mod to work
  • Use a SESSION INVITE CODE not a Steam Invite, or SQUAD INVITE CODE
  • Joining Mid Mission in Siege after wave 5 will not work.
  • Up to 2 Console players can join a 12 player game but they need to join with a Squad code before you invite the rest of your pc party with the session code

FAQ

How To Install The Mod