Barotrauma
by FakeFish · 13 Mar, 2023
106 downloads
About the Game
- Rock Paper Shotgun
WELCOME TO EUROPA
Barotrauma is a 2D co-op survival horror submarine simulator, inspired by games like FTL: Faster Than Light, Rimworld, Dwarf Fortress and Space Station 13. It’s a Sci-Fi game that combines ragdoll physics and alien sea monsters with teamwork and existential fear.EMBRACE THE ABYSS
In the not too distant future, humanity has fled to Jupiter’s moon. With its irradiated icy surface, life can only be found in the ocean below. Travel through a punishing underwater environment and make friends or rivals of the four factions of the world. Discover what lies in the depths of Europa.HELP YOUR CREW SUCCEED, OR MAKE SURE NO ONE DOES
There are as many ways to enjoy Barotrauma as there are ways to die in it. Work together with your crew to achieve your goals, or brace for betrayal when you have a traitor on board. Play with friends, strangers, or your worst enemies.EXPLORE, OPERATE, COMMUNICATE
Navigate underwater, complete missions for the last remnants of humankind, explore the ruins of an alien civilization, flee or fight monsters. Operate complex on-board systems and devices like the sonar, nuclear reactor, weapons, engines and pumps. Communication is key!EXPERIMENT, CRAFT, CREATE
Master the complex on-board wiring and the comprehensive crafting and medical systems. Create your own submarines and monsters with built-in editors to rival the standard ones. Even tap directly into our source code and mod away.Features
- Play with up to 16 players on board a submarine. Supplement your player count with bots as needed in either singleplayer or multiplayer game modes.
- 6 player classes with different skills and tasks: Captain, Engineer, Mechanic, Medic, Security officer and Assistant.
- Talent system: Gain experience and unlock talents to improve your character. Each class has three specialization talent trees to customize your playstyle.
- Faction and reputation mechanics: Choose who to ally with, help their cause, reap the benefits or suffer the consequences.
- Procedurally generated world and missions with multiple game modes for virtually endless replayability.
- Comprehensive crafting system: gather materials, craft equipment, weapons, medicines and more to help your crew survive on Europa.
- Built-in Submarine, Character and Procedural Animation editors. Share and discover mods directly via Steam Workshop.
- Most game data exposed in .xml and the game’s source code publicly available on GitHub for modding.
Screenshots
15 images
Version Information
Steam Patch Notes
Official update history
We've just released a hotfix to address the crossplay issues in the Summer Update. This was caused by an incompatibility in one of the reworked submarines, so the hotfix fixes that as well as other minor issues we have noted since the update.
Following this hotfix, we will start shifting towards our summer holidays. As usual, we will be mostly away from our desks during July, and back in business in August. We wish everyone smooth sailing and a beautiful summer!
v1.13.4.0
- Fixed a missing gap in the reworked Typhon + other minor fixes.
- Minor visual fixes to Orca 2.
- Adjustments to Azimuth's lighting.
- Tweaked Azimuth's stealth mode circuit to make piloting smoother.
- Fixed "style" attribute in item GuiFrame XML being case-sensitive.
- Fixed battery cells not being visible when charged in a battery or shuttle battery.
- Fixed bots failing to fire Herja's railgun.
[img src="{STEAM_CLAN_IMAGE}/33962671/abb5e9d35633306eefba92ff5c5657eee957cee3.png"]
Hello everyone!
We have just released a hotfix to address issues found since the release of the Spring Update. Please be sure to update your game to the latest version, and see the list of changes below.
v1.12.7.0
- Reduced how much the new weak points in vanilla subs push bots around to make them more capable of fixing broken weak points.
- Fixed selecting any item that forces the character to some pose (chairs, periscopes) getting logged in the server console.
- Mac only: added a button for settings mic permissions to the audio settings. It seems that on Mac, the game updates may cause the OS to revoke the permissions.
- Fixed some of the Workshop tags you can choose in-game not working on Steam's side.
Modding:
- Fixed contained items being misaligned on attachable items (e.g. in mods that make diving suit cabinets attachable).
- Fixed monsters spawned by an event inside an outpost being unable to attack any items inside that outpost. To our knowledge, didn't affect vanilla events, but caused issues in certain mods.
[img src="{STEAM_CLAN_IMAGE}/33962671/489cc806ed2a89bb67cf4950ecb617c397554681.png"]
Hello everyone!
We have just released a hotfix to address issues in the Winter Update to make your sailing smoother over the holidays. See the list of changes below and be sure to update your game to the latest version.
With the Winter Update last week we also added a few new remixes to the Supporter Pack soundtrack and to streaming services. Check out "Zack The Rabid Ripper Remix", "Alien Syndicate Remix", "Seafloor Cries Sub-Night Remix" and "Accordion Some-Kind-Of-Irish Remix".
Happy holidays, everyone!
v1.11.5.0
- Fixed players sometimes retaining their old inventory items if they die and respawn on a later round.
- Fixed inability to order bots to deconstruct items that don't yield anything when deconstructed.
- Fixed weak points causing the "high pressure" icon to appear in the room, despite the pressure not being high enough to cause damage.
- Fixed relay connections being in an incorrect order in circuit boxes.
- Fixed ImpactTolerance, ImpactDamage and ImpactDamageProbability resetting back to defaults when saving and reloading a sub.
Hello everyone!
We have just released another hotfix for the Autumn update, focused on improving the server browser filter, to help players deal with the ongoing issue of spam servers.
We apologize for the inconvenience and thank you for your patience while we combat this issue.
1.10.7.2
- Various improvements and optimizations to spam filter processing
- The optimizations makes it possible to add homoglyph processing for all fields
- Added spam filter options that support regular expressions
[img src="{STEAM_CLAN_IMAGE}/33962671/abb5e9d35633306eefba92ff5c5657eee957cee3.png"]
Hello everyone!
The DoS attack on our servers and the spam on the server list we mentioned in the previous post is still ongoing, and we've just released another hotfix to add some more in-game countermeasures against them while working on more robust server-side solutions to the issues. We're sorry for the inconvenience and thank you for your patience as we continue to monitor and counter this problem.
v1.10.7.1
- Additional fixes to multiplayer exploits.
- Fixed inability to rename a bot you've taken over in permadeath mode.
[img src="{STEAM_CLAN_IMAGE}/33962671/abb5e9d35633306eefba92ff5c5657eee957cee3.png"]
Hello everyone!
We've just released a second hotfix to address issues affecting Barotrauma following the Autumn Update. Be sure to update your game, and see the changes below.
v1.10.7.0
- Fixed crashing when editing a beacon station's, wreck's or enemy sub's min/max level difficulty settings in the sub editor before you have saved the sub for the first time.
- Additional fixes to multiplayer exploits.
You may also have noticed warnings or errors in the game about "failing to connect to the master server" in the past week. These were caused by an ongoing DoS attack on our servers, which run the Barotrauma website, wiki and support for certain in-game features such as the global spam server filter. We've now applied some countermeasures and resolved the issue. We will continue monitoring the situation with the servers for future issues.
Hello everyone!
We have just released a hotfix to address issues in the Autumn Update 2025. Find the full list of changes below, and make sure to update your game to the latest version to receive the fixes.
v1.10.6.0
- Fixed contextual orders no longer working even if you were within radio/speaking range of a bot.
- Fixes to several multiplayer exploits, including one that allowed clients to cause server-side lag by sending specifically crafted messages to the server, even if the server didn't allow them to join.
- Fixed a bug caused by the water flow changes in the previous update: water flow through gaps in inside the submarine was much faster than intended when there were multiple breaches on the submarine's outer hull.
- Reduced the water flow through gaps when the hulls on are not linked. Linked hulls are intended to behave as if they were one room, and should allow unrestricted water flow.
- Railgun shells now disappear shortly after the first impact: the change in the previous update (which allowed them to penetrate multiple limbs/targets) had the side-effect that a shell that went through a single limb could fall back on the submarine and still do full damage.
Hello everyone!
We have just released a hotfix to address issues in the Summer Update 2025. Find the full list of changes below, and make sure to update your game to the latest version to receive the fixes.
v1.9.8.0
- Fixed RegEx components occasionally timing out for no apparent reason (even if the expression isn't particularly performance-intensive). Seemed to have been caused by RegEx changes in .NET 8.
- Fixed the game sometimes freezing for a long time at a specific point during the loading screen. Only affected some players: the issue had to do with the game failing to connect to a server to check whether the player has given their consent collect gameplay analytics.
- Fixed streamed sounds always starting from the beginning when they're re-played. Particularly noticeable in the night club modules, when the music always starts from the beginning if you step outside the range of the sounds.
- Fixed distance attenuation and positioning not working on the music played by jukeboxes and bar speakers (meaning they'd play at full volume regardless of your distance to the speakers).
Modding:
- Fixed oneshot delayed effects (which should only ever trigger once) still continuing to run some of the logic after the first trigger, causing an unnecessary performance hit. Did not seem to affect any vanilla items.
We have just released a hotfix to address a number of issues with the Calm Before the Storm update.
Find the list of changes below, and remember to update your game to the latest version to receive the fixes!
v1.8.8.1
- Fixed client list often appearing empty in the server lobby when joining mid-round while a campaign was active.
- Fixed job variant selection panel rendering below the job selection panel, often making it unusable.
- Fixed job variant selection only working in the server lobby, not in the tab menu mid-round.
- Fixed inability to preview loadouts if there's only one variant of a job available (e.g. assistants).
- Fixed fires no longer spreading from room to room.
- Fixed a pathfinding issue that sometimes caused both to get stuck running back and forth towards the target they're trying to reach (one common place where this occurred was Barsuk's engine room).
- Fixed non-hitscan projectiles such as harpoons launching with an incorrect rotation when fired to the left.
- Fixed Herja not having any assistant or non-job-specific spawnpoints, causing assistants and custom classes to spawn at other classes' spawnpoints, potentially giving them ID card tags they shouldn't have.
- Autoinjectors no longer inject meds on dead characters (even though they are technically below the health threshold at which the autoinjection should trigger).
- Fixed team argument not working on the "spawncharacter" console command when spawning non-humans.
- Fixed some edge chunk objects in hydrothermal wastes and the great sea spawning in front of the level walls.
- Fixed missing gap in one of the new crew modules, which prevented water and oxygen from flowing through the module properly.
Modding:
- Fixed transferring afflictions to a newly spawned character using status effects causing a crash if the original character had already been removed. Didn't affect any vanilla content.
We have just released a hotfix to address issues with the Calm Before the Storm update.
Find the changelist below, and remember to update your game to the latest version to receive the fixes!
v1.8.7.0
- Fixed an AI bug that made bots scared of water, making them seek safety from flooded rooms even when they were wearing diving suits.
- Fixed non-hitscan projectiles registering hits with characters that are behind the weapon, even if the barrel is in front of the character.
- Fixed submarine maintaining an incorrect position (= starting to steer somewhere completely off) when you enable "maintain position" and then enter a new level.
- Fixed autopilot failing to navigate to a destination if it's already on at the start of the round.
- Fixed dedicated server descriptions still sometimes getting truncated.
- Fixed lights shining out from items inside character inventories.
- Fixed inability to access the inventories of other players when they're manually ragdolling.
- Fixed "firing blanks" traitor event requiring you to replace standard coilgun ammo boxes with fake ones, instead of accepting any type of coilgun ammo.
- Fixed switches flipping around when you attach them while facing left.
- Fixed grenade "cooking" hint not showing the correct keybinding (just saying instead of the actual keybinding).
- Fixed main menu notifications (changelog, unstable info) staying open if you don't manually close them and e.g. start a new game or go to the sub editor.
- Fixed normal outpost events triggering in outpost that have been abandoned because of Jovian Radiation.
We have just released the second hotfix addressing additional issues in the Unto the Breach update. Make sure to update your game to the latest version, and see the list of changes below.
v1.6.19.1
- Fixed chat input box getting cleared whenever someone changes their team, or when the game mode or team selection mode changes.
- Fixed stun resistance PvP setting doing nothing.
- Made Crimson Acid less powerful against large monsters.
- Fixed everyone's name tags being shown in red until you spawn when you join a campaign mid-round.
- Fixed stackable items with a non-default quality (e.g. grenades) failing to stack in the fabricator's output slot, instead just falling to the floor.
- Fixed very large PvP outposts often clipping into the level walls.
- Fixed decorative structures such as background walls not showing up on hostile (non-player) subs in multiplayer.
- Fixed "giveitem" command crashing the game when used with no arguments.
- Fixed Gravity Flak Shell's "gravity pull effect" being affected by gravity.
- Fixed Fulgurium Batteries sometimes spawning automatically in tools at the start of a campaign.
- Changed cargo scooter recipe to be more consistent with the normal scooter recipe (Underwater Scooter + x2 Ti-Al Alloy).
Modding:
- Fixed freezes / lag spikes in multiplayer when a scripted event uses StatusEffectAction when there's lots of mods with custom events enabled.
We have just released the first hotfix to address issues that have been found since the Unto the Breach update. Find the list of changes below, and make sure to update your game to the latest version!
v1.6.18.1
- Fixed several issues when the server rejects a name change due to a client trying to change their name too often: the server would start spamming the "can't change name" message, team and job preference selection would stop working too, and the game would crash when attempting to open the job preferences.
- Fixed equipped genes becoming tainted if you die due to disconnection.
- Fixed kill/death counters not working in the Sub vs. Sub PvP missions.
- Fixed gravity spheres not rotating in the sub editor.
- Fixed current generators not getting properly mirrored in ruins in mirrored levels.
- Fixed spawnpoints for escorted characters and prisoners not working.
- Fixed crashing if an AI character's husk infection is removed when they're using a ranged weapon.
- Fixed psychosis effect persisting if you leave the outpost midway through the "minds unraveled" event.
- Fixed night club merchants spawning in outposts without a night club.
- Fixed night club merchants not selling beer or rum (literally unplayable).
- Fixed bots cleaning up live grenades.
- Fixed server getting stuck in an infinite "restart loop" if autorestart or starting when everyone is ready is enabled and the selected perks are not suitable for the selected sub. The server would just attempt an immediate restart if the players wanted to cancel and reselect the perks.
- Fixed "All" option not working in the server browser's language filter dropdown.
- Fixed Raate Colony pvp map missing hulls near upper turrets.
Modding:
- Fixed outpost generation parameters that reference non-existent NPC prefabs causing a crash during outpost generation.
Current Release
Build 23799131
Uploaded Jul 08, 2026
System Requirements
How to Install
Barotrauma.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
1.5 GB
23799131
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Download Barotrauma for PC with a direct link or via torrent. Get the full version of Barotrauma for free. Barotrauma is a Action released by FakeFish.