Barotrauma v1.13.3.1a

Barotrauma is a 2D cooperative survival-horror submarine simulator set beneath the irradiated ice of Jupiter’s moon Europa. Inspired by games like FTL: Faster Than Light, Rimworld, Dwarf Fortress and Space Station 13, Barotrauma combines ragdoll physics, alien sea monsters and dark, claustrophobic tension with teamwork—and the ever-present threat of sabotage.

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In this punishing underwater frontier, up to 16 players (or a mix of players and bots) take on specialized roles—Captain, Engineer, Mechanic, Medic, Security Officer and Assistant. Together you’ll:
• Navigate procedurally generated oceans and caverns, completing missions for humanity’s last factions or striking out on your own.
• Operate complex submarine systems, from sonar and nuclear reactors to engines, pumps and weapons.
• Master comprehensive crafting, medical and wiring systems to repair damage, build new equipment and keep the vessel running.
• Face off against terrifying alien beasts, explore ruined alien structures and scavenge resources to survive.
• Communicate constantly—whether coordinating a rescue, fending off monsters or unmasking a hidden traitor among you.

Barotrauma offers virtually endless replayability through multiple game modes, procedurally generated worlds and a deep talent system that lets each class specialize and grow. Faction and reputation mechanics mean your choices carry weight: help one group and reap rewards… or incur deadly consequences.

For the creative at heart, Barotrauma includes built-in editors for submarines, characters and animations, exposes game data in XML, and makes its source code publicly available for full modding freedom. Delve into the abyss, forge alliances—or betrayal—and see if you can survive the horrors lurking beneath Europa’s frozen surface.
[spoiler=Steam Update Info 16.06.2026] Summer Update 2026 out now Hello everyone! This year’s Summer Update has just been released, with five reworked vanilla submarines and several fixes, improvements and quality-of-life additions. Find the full list of changes at the end of this post and dive in! v1.13.3.1 Submarine reworks: - Humpback, Orca 2, Azimuth, Typhon, and Herja have received their visual and gameplay reworks. - The command room of the Orca 2 is now located at the center of the submarine. - Typhon now comes with valves and pipe weakpoints. - Herja has been upgraded with a power distributor, befitting its high-tech theme. Changes and additions: - Added an option to back up your custom submarines in the Steam Cloud. Can be enabled per-submarine using a checkbox in the sub editor's save dialog. - Added quality parameter to the give/spawnitem console commands. Allows spawning in items with non-default quality. - The teleportsub console command has a parameter for choosing which submarine to teleport. - The spawncharacter console command has a parameter for renaming the spawned character. - The showseed console command displays the map seed too if used in campaign mode. Multiplayer: - Fixed monster attacks that run over time (e.g. when fractal guardians fire the steam cannon) causing an excessive amount of network usage in multiplayer. - Fixed an exploit that allowed modified clients to cause other clients to eventually get out of sync and disconnect. - Fixed inability to drag and drop stacks of items to other players in multiplayer. - Fixed submarine voting no... [leech=https://steamstore-a.akamaihd.net/news/externalpost/steam_community_announcements/1835236783574109]Read more in Steam[/leech][/spoiler]