Release Date

Steam Early Access June 5, 2019
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. As Barotrauma is an early access game, our visuals change periodically, so please visit frequently to be sure you get the most recent visuals for your story!


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.

In the not too distant future, where habitable places have become scarce, humanity has arrived on Europa. This moon with its frozen surface is a hostile environment, and life can only be found in the dark ocean below – and the small pockets of human habitation are not the only form of life to be found there.

Play as a submarine crew member tasked with managing the many onboard systems from nuclear reactors to sonar, guns, engines and more. Create tools, 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.

Online Co-op

Manage your submarine and its various systems in adrenaline-filled co-operative gameplay. Play as the captain or any of the four other character classes, with up to 16 players per submarine. Help your teammates survive, or make sure no one does.

Single Player

Navigate dangerous environments to achieve mission goals or simply travel deeper into the game world. Explore alien ruins and wrecked submarines along the way to discover rare and powerful artifacts and other resources. What lies at the end of the road?

Fully integrated mod tools

Transform the game via Steam Workshop and with the in-game submarine editor, character and procedural animation editor, procedural level editor and sprite and particle editors. 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 is now nearing completion, with Steam Early Access release on June 5, 2019.