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Interstellar Marines

Also known as Interstellar Marines, im, interstellar marines

UPDATE 28 AVAILABLE - Interstellar Marines is an immersive tactical sci-fi First Person Simulator in the making, offering a unique blend of tactical gameplay, dynamic environments and non-scripted AI. Play Singleplayer or Co-op/PvP on servers around the world.

Last update
14 May 2026
Players now
0
Original sources
1
Latest update
Patch notes

Christmas Mini Update

Hello Marines, and Merry Christmas! We've just released a small update that has added the following: XMAS MAYHEM Marines and CTRs now have reindeer antlers and santa hats. These changes affect the Xmas Mayhem gamemode,…

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Latest updates

Update history

Browse past updates and patch notes for this game.

20updates

Gallery

In-game media

Achievements

Community progression

Top picks from 28 Steam achievements, sorted by player unlock rates.

  • Reporting for DutyComplete Welcome to Project IM Introduction Mission29.1%
  • Training Rank 10: AraneaeReach 1,000 Training Points10.6%
  • Training Rank 20: SerpentesReach 2,000 Training Points5.8%
  • Training Rank 30: Pygocentrus NattereriReach 4,000 Training Points3.1%
  • Short CircuitEliminate 100 Combat Training Robots on Realistic Difficulty2.6%
  • Security BreachComplete Starcrown Aerospace on Realistic in Co-op2.0%