A co-op horror game for up to 6 players about ships that went missing in the Bermuda Triangle. Board them with your friends, carry out everything worth money, and pay the people who let you in before they decide you know too much.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“I'm releasing Sunk Cost in Early Access because I want to shape the rest of the game together with its players. Feedback is the best way to learn what's fun, what's frustrating and what's missing, and I'd rather find that out early than after the game is "done". The core gameplay is in place, but the game is still far from what I have in mind. Over the course of Early Access I plan to add many more monsters, locations, cosmetics and interactive items”

Approximately how long will this game be in Early Access?

“If the launch goes well, I currently expect the game to stay in Early Access for about 1.5 years. This is an estimate. The timeline may change depending on player feedback and on how much new content ends up being added”

How is the full version planned to differ from the Early Access version?

“The full version is planned to be much bigger and more varied. My current plans include:
- more monsters, each with its own behavior and its own way of ruining a run
- new locations and ship layouts to explore
- more character customization options
- more interactive items and loot to haul
- balance and quality-of-life improvements based on player feedback
What exactly gets added, and in what order, will depend a lot on what players enjoy most”

What is the current state of the Early Access version?

“The game is fully playable right now. You can team up with friends, explore randomly generated sinking ships, drag loot back to your boat, meet the quota and try to survive several types of monsters, all with proximity voice chat. What the game lacks right now is variety: after a number of runs you'll start seeing the same monsters, rooms and items again. Expanding that is the main focus of Early Access”

Will the game be priced differently during and after Early Access?

“I don't plan to change the price when the game leaves Early Access. If you buy the game during Early Access, you get the full release as well, with nothing extra to pay”

How are you planning on involving the Community in your development process?

“I run a Discord server where players can share ideas, report bugs and talk about the game directly with me, and I'm open to any thoughts about it. I also read Steam reviews and discussions to understand what players like and what needs work. With each bigger update I plan to post notes about what changed and which player feedback led to those changes”
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This game is not yet available on Steam

Planned Release Date: Q1 2027

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About This Game

Ships go missing in the Bermuda Triangle, and nobody can tell you why. You and your friends are a crew of broke sea explorers who only get to work out here thanks to a deal with the partners, a faceless outfit that runs these waters and lets you in for a fee. So every trip you take your boat out to the next ship drifting in the fog, climb aboard and drag out whatever might sell before it's too late to leave.

The ship is not on your side

Every trip brings a new layout, and no ship stays level for long. The deck keeps leaning as the trip goes on, so furniture slides across the rooms and the corridor you came in by slowly turns into a slope. Water seeps in from the lower decks and keeps climbing, and at some point you'll have to decide whether that safe is worth swimming for.

Find the most valuable items

A compass, a paperweight or the occasional golden crab will fit in your pocket, but the real money is in things nobody should be carrying, like pianos, safes and antique wardrobes. One person can drag them out alone with enough patience, and two get there much faster, as long as nobody lets go on the stairs.

Keep an eye on the piano, too. Nobody has ever seen one move, but if everyone looks away for long enough, it starts making its way back to the room where you found it.

Something lives on board

The creatures of the Triangle were here first. The ships are full of all kinds of them, and not all of them are friendly, which you usually find out at the worst possible moment.

Open water is no safer. Swim too far from the ship, the boat or the barge, and something in the water might take you.

The partners want their money

Everything you bring back goes to the barge, where the partners count it toward your quota. Their shop will sell you different gear for the same dollars you owe them, which doesn't make the number any easier. You get three trips to make it, and the partners have their own way of dealing with crews that don't.

The dead can still talk

Voice chat works by distance, so a friend two rooms away won't hear you yelling about the piano unless somebody bought a radio. The dead hear everyone but can only talk to each other, so you get to watch a piano slide toward your friend's back with no way to warn them.

  • Online co-op for up to 6 players

  • A new ship layout every trip, in three sizes

  • Proximity voice chat, radios and megaphones

  • Character customization

Mature Content Description

The developers describe the content like this:

The game contains stylized violence and horror themes. Monsters hunt the players, and player characters can die in several ways: impaled on a pirate's hook with some blood, grabbed by a creature, drowned, or crushed by heavy furniture like a sliding piano. There is no gore or dismemberment. Expect jump scares, dark spaces and tense chases.

System Requirements

    Minimum:
    • OS: Windows 10 64-bit (version 21H1 / build 19043 or newer)
    • Processor: Intel Core i5-7400 / AMD Ryzen 5 1400
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1060 6 GB / AMD Radeon RX 580
    • DirectX: Version 12
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Sound Card: DirectX compatible. Microphone recommended for voice chat
    Recommended:
    • OS: Windows 10 / Windows 11 64-bit
    • Processor: Intel Core i5-10400 / AMD Ryzen 5 3600
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GeForce RTX 2060 SUPER / AMD Radeon RX 5700
    • DirectX: Version 12
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Sound Card: DirectX compatible. Microphone recommended for voice chat