This game has been Greenlit by the Community!

The community has shown their interest in this game. Valve has reached out to this developer to start moving things toward release on Steam.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Platforms: PC, Linux
Languages: English
Feb 15 @ 11:14am
Feb 28 @ 9:21am
Recent Announcements View All (2)
Netcode update
Patch v0.5.4.3 released
  • a new enemy
  • some new sound effects by Omniary
  • some structure-specific damage sounds
  • the size of the docked subs/shuttles is taken into account when determining the spawn position of a sub (large multi-part subs shouldn't spawn inside walls anymore)
  • explosion damage is calculated based on the distance to the closest surface of a limb instead of the center position of the limb (i.e. large monsters can be damaged by smaller explosions)
  • added an Undertow Games splash screen
  • updated to a newer version of the NVorbis sound library
  • fixed a game-crashing null reference exception caused by wires
  • fixed an issue in the way items in alien ruins are initialized, which occasionally caused ID mismatches (and desync) in items and characters created after generating the ruins
  • fixed some item properties not being saved if changed in the editor (e.g. battery recharge speed)
  • fixed characters turning into husks when they die, even if the infection has been cured
  • fixed docking ports being disconnected in the mirrored subs in the combat missions
  • unconscious characters collide with stairs when they're being dragged up
  • fixed characters sinking/floating away when using railgun controllers underwater


Barotrauma is an online multiplayer game heavily inspired by Space Station 13. The game takes place in a submarine travelling through the icy depths of Jupiter’s moon Europa. The bone-crushing pressure outside the submarine, the strange creatures inhabiting the ocean and the potentially dangerous equipment and machines on board ensure that the tiniest slip can turn the game into a chaotic struggle for survival.

Join a crew of up to 16 players or play the single player campaign with a crew of AI controlled characters. There are several different character classes to choose from, each with different skill sets and responsibilities on board the vessel. Take command of the crew as the captain, take responsibility of keeping the submarine operational as an engineer or a mechanic, save lives as a medical officer or keep the submarine safe from external and internal threats as a security officer.

You'll also have to be on the lookout for saboteurs - some players may be given secret objectives at the start of each round.

The submarines in Barotrauma are complex beasts with hundreds or thousands of interconnected items, machines and devices. Most disasters and tricky situations you'll face are completely non-scripted, arising dynamically from the interaction between the submarine, the players and the environment: Something punched a hole in the ballast tanks and the ship is rapidly sinking towards crush depth. The nuclear reactor overheated and fried a dozen junction boxes across the ship. The guy wearing a clown suit stole and hid all the oxygen tanks...

The game also features a built-in submarine editor that allows you to design and build your own submarines.

The subsurface ocean of Europa is a dangerous place. The icy waters are inhabited by bizarre creatures ranging from harmless fish to enormous bloodthirsty horrors, and from biomechanical alien sentinels to human divers taken over by a strange parasitic lifeform. The ocean itself is also a major threat, as the pressure can crush an unprotected submarineer in seconds.

The environments of the game are procedurally generated. The crew must navigate their way through underwater chasms and caverns, and occasionally leave the safety of their vessel to salvage artifacts from labyrinthian alien ruins.

A free alpha version of the game is available for Windows and Linux from the following link. In-development versions will be free for download while we're working towards releasing the full game.

Official discussion forum[]
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Actually is there any chances for SCP Containment Breach to be released too on steam ?
breenWorm 19 hours ago 
dead game
Tricky 21 hours ago 
0:48 casually dragging serial killer
Proto Nov 22 @ 4:51pm 
I forgot about Greenlight, I love how Direct ended up allowing more shovelware on Steam
QuickLoad Nov 22 @ 2:48pm 
No worries, whatever has been greenlit will stay greenlit, including Barotrauma! ^^
KraggleWulf Nov 22 @ 7:31am 
Greenlight is being retired?!?! Tell me this will return on Steam!
bwup Nov 1 @ 9:31am 
Killer clown has got me sold. Reminds me of SS13
QuickLoad Oct 29 @ 6:19pm 
What do you mean?! Two days ago there were 65+ players across 23+ servers, and there's the too :P
Omega Oct 29 @ 6:12pm 
@QuickLoad Many people is not playing alot about this game and There is like 0 Discusions and only 2 announcements. We should create a community for this so players can play for fun.
QuickLoad Oct 29 @ 8:00am 
@The Necro Knight

@TheOneTrue63 is the only way atm.

what do you mean