Frostrail vs Barotrauma: Same Studio, Different Machine

The comparison is unavoidable: both games come from FakeFish, both put a crew inside a vehicle that is also their base, and both turn routine maintenance into a crisis. The differences are just as real, and they decide which one you should actually play.

Quick answer: Barotrauma is a 2D submarine simulator on a Jupiter moon, out since 2023, $34.99, with 1–16 players, traitors, a mature mod scene and a brutal learning curve. Frostrail is a 3D first-person train survival game, launching into Early Access in Q4 2026, four-player co-op, no price announced. Pick Barotrauma for depth and chaos now; pick Frostrail if you want the same tension in first person and are willing to grow with an Early Access build.

The family resemblance

FakeFish is the common thread. The studio co-developed Barotrauma with Undertow Games and is building Frostrail with Shiro Unlimited, and the design DNA is visible in both:

• A vehicle you live inside. The submarine and the locomotive are not vehicles you drive and forget; they are the base, the inventory and the thing that kills you when it fails.
• Systems that interact badly. Power, oxygen, heat, pressure, fuel and hull integrity all feed each other. A failure in one becomes a failure in three.
• Co-op roles that emerge rather than being assigned. Nobody picks "engineer" from a menu; someone ends up fixing the reactor because everyone else is busy.
• Death is administrative. Losing a run is usually a chain of small omissions, not a single bad fight.

If you liked that in Barotrauma, you will recognise it immediately in Frostrail.

Where they split: the machine

The perspective change is not cosmetic. Barotrauma's side view lets you see the whole submarine at once, which is why it can support a 16-player crew: everyone can read the same situation. Frostrail's first-person view limits what any one player knows, which is why four is a sensible cap — you are meant to be blind to what the other three are doing.

Solo play and the difficulty curve

Barotrauma supports solo with an AI crew, and it works, but it is a different game. You spend most of your time issuing orders and watching bots fail to prioritise, and the horror is diluted by having company that never panics. It is a good way to learn the systems; it is not the reason people have 500 hours.

Frostrail lists single-player support on its store page, and the demo is playable alone. The loop is more forgiving solo because the train is one machine rather than a multi-deck submarine, and because four-player scaling is optional rather than baked in. It is still a game about being cold and outnumbered; solo is viable, not ideal.

Neither is a solo-first game. If you only play alone, Barotrauma's bot management is deeper and Frostrail's atmosphere is stronger.

Barotrauma's onboarding is famously rough. The tutorial covers the basics, then the campaign drops you into a submarine where a single wiring mistake can electrocute the crew and a single husk infection can end a run an hour later. Expect to lose your first several submarines to causes you did not understand at the time.

Frostrail's demo is gentler by design: a tutorial chain, one junction of track, one bunker. The failure states are legible — the engine stalls, the cab freezes, a Revenant overwhelms you — and each one has an obvious fix. Whether Early Access keeps that clarity is the open question.

The beginner guide covers the first-hour mistakes; if you are coming from Barotrauma, the main adjustment is that you cannot see the whole machine.

Horror: water vs cold

Barotrauma's horror is thalassophobia and claustrophobia. Something is outside the hull, the lights are out, and the only way to fix it is to leave the room you are safe in. It is one of the few games that makes an airlock frightening.

Frostrail's horror is exposure. The cold is always draining, the blizzard hides what is coming, and the Revenants are a physical threat rather than an unseen one. It is closer to The Thing than to Alien: isolation by weather rather than by depth.

Which is scarier is personal. Which is more stressful is not close: Barotrauma asks you to manage a crew and a machine simultaneously, and its traitor mode means another player may be the problem.

Price and status

This is the practical tiebreaker.

• Barotrauma is finished, $34.99, frequently discounted, and has six years of post-launch content behind it. You can buy it today and get the complete game.
• Frostrail is not out. Early Access is scheduled for Q4 2026 with no date and no price. What you can play now is a free demo that ends October 26.

Buying an Early Access survival game is a bet on the roadmap. Frostrail's announced plan — engine upgrades, carriages, relics, dungeon reworks, train defence — is specific enough to evaluate, and the release date page tracks what has actually been confirmed versus promised.

Which should you play?

Choose Barotrauma if:

• You want the deeper systems game today.
• You have a group of five or more and want a crew game.
• You like modding, submarine building and traitor rounds.
• You bounce off Early Access and want a finished product.

Choose Frostrail if:

• You prefer first person and a smaller, tighter crew.
• You want the survival loop without the wiring-and-oxygen spreadsheet.
• You are happy to play a game as it grows, and the demo's loop hooked you.
• You want a train. That is a legitimate reason; the locomotive is the best idea in the game.

Play both if you have a regular group. They scratch the same itch from different angles, and the skills transfer — reading a failing system, triaging, communicating under pressure.

Is Frostrail just Barotrauma on rails?

No, and the difference is bigger than the vehicle. Barotrauma is a management game with horror on top; Frostrail is a survival game with a management layer. In Barotrauma you spend most of your time keeping a complex machine alive; in Frostrail you spend most of your time keeping yourself alive while the machine carries you.

The studio connection makes the comparison fair, but it also explains why the games feel related without competing. FakeFish is not remaking Barotrauma; it is applying the same design instinct — put players inside a fragile machine and make them talk to each other — to a different kind of fear.

FAQ

Did the same studio make Frostrail and Barotrauma? Yes. FakeFish co-developed Barotrauma with Undertow Games and is developing Frostrail with Shiro Unlimited.

How many players does Barotrauma support? Up to 16, with a default server maximum of 8. Frostrail supports up to four.

Is Frostrail out yet? No. Early Access is scheduled for Q4 2026; a free demo ran October 19–26, 2026.

Can I play Frostrail solo? Yes, single-player is supported, though the game is built around co-op.