Release Date

Steam Early Access June 5, 2019

v1.0 on Steam March 13, 2023

View Barotrauma on Steam


PC / Mac / Linux via Steam

Find Barotrauma’s official graphical assets for media via the Download all media button at the bottom of this page!


Overcome crisis and the unrelenting pressure of a frozen ocean. Flee or fight alien lifeforms, explore a strange new world in Jupiter’s orbit, command your crew and craft equipment in a tense 2D experience. Inspired by games like FTL: Faster Than Light, Rimworld, Dwarf Fortress and Space Station 13; Barotrauma is a Sci-Fi game that combines ragdoll physics and alien sea monsters with teamwork and existential fear.

In the not too distant future, humanity has fled to Jupiter’s moon. Because of 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.

Welcome to Europa

Play as a submarine crew member tasked with managing the many onboard systems from nuclear reactors to sonar, guns, engines and more. Choose from six different character classes, each with their own skills and tasks. Gain experience and unlock talents to improve your character.

Create tools, medicines, drugs and weapons with the comprehensive crafting system and learn to overcome the many dangers along the way. Procedural levels and events ensure no two games will ever be exactly alike.

Multiple game modes for multiplayer or solo play

Manage your submarine and its various systems in adrenaline-filled co-operative (or mutually destructive) gameplay. Play as any of the six character classes, alone or with up to 16 players per submarine. Help your teammates survive, or make sure no one does. Game modes ranging from campaign to sandbox, traitor, and PvP.

Fully integrated mod tools

Transform the game via Steam Workshop and with the in-game submarine editor and character editors, and even tap directly into our source code via our public GitHub repository. Unleash your creativity!

Our Story

Barotrauma first saw the light of day under the title Subsurface as the second major project of Undertow Games. Undertow Games was founded in 2014 by Finnish game developer Joonas Rikkonen, known by his online alias Regalis, following the success of his free open-source horror game SCP – Containment Breach. Barotrauma was likewise first released as an open pre-alpha in 2015.

Barotrauma is also the first commercial release for FakeFish, an indie game studio based in Turku, Finland. Also founded in 2014, FakeFish was initially the result of five friends participating in a startup accelerator program and winning the first prize with their game concept. Since then, FakeFish has grown to employ a team of both industry veterans and fresh talents, including Joonas from Undertow Games.

Towards the end of 2017, Undertow Games was in need of added manpower and FakeFish was looking for a new project. With the stars aligned, the two studios decided to team up and start working towards Barotrauma’s Steam release as a joint project. With the active community of players continuing to contribute to the development, Barotrauma was released into Early Access on Steam on June 5, 2019.

On March 13, 2023, after almost four years in Early Access, Barotrauma finally reached version 1.0. FakeFish and Undertow Games continue to support their debut title with further updates.