A PS1-style co-op horror game for 1–4 players. Set at sea, you run a fishing trawler with your crew, haul, gut, steer, repair! while something lurks in the shadows. Keep the ship alive. Get home. You're not alone out there.

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Download Thalassomania Demo

This game is not yet available on Steam

Planned Release Date: Q1 2027

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About This Game

Thalassomania is a PS1-style horror game for 1–4 players. You've taken a job on a fishing trawler: work the catch, keep the ship running, and bring the crew home. But somewhere out on the water, something else came aboard.
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About this demo

This demo is a slice of the full game, and it is built to end before you reach home. However well your crew does, the voyage always ends the same way: the thing in the storm catches up with you. That's on purpose. It isn't a bug, and you didn't miss anything or do anything wrong. Getting the trawler all the way home is saved for the full game. For now, see how long you can keep the engine running, the water out and each other alive. There are mulitple fishing locations/cosmetics/tasks to do each game though.

Also as a little easter egg, you can press [H] to Emote, and you can find and smoke cigarettes... 

This is a working trawler, and you're the crew. Haul in the nets, gut and stow the catch, keep the engine fed, and hold your heading through the dark. The jobs are spread all over the ship, so getting them done means splitting up and spending more time alone than you'd like. 

Mature Content Description

The developers describe the content like this:

Since the graphics are retro, the extent in which they are graphic is limited, the creature that hunts you in this horror title will leave behind blood splatters and bodies will ragdoll, future plans for maybe adding more gore to certain rooms like a torture room but again the graphics will be retro so not overly gorey

System Requirements

Windows
macOS
    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Intel Core i5-4590 / AMD Ryzen 3 1200
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GTX 960 / AMD Radeon R9 280 (2 GB)
    • DirectX: Version 11
    • Storage: 2 GB available space
    • Sound Card: Any (microphone recommended)
    • Additional Notes: Online co-op for 1-4 players through Steam. A microphone is recommended for proximity voice chat.
    Recommended:
    • OS: Windows 10 64-bit
    • Processor: Intel Core i5-8400 / AMD Ryzen 5 2600
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GTX 1060 6 GB / AMD RX 580
    • DirectX: Version 11
    • Storage: 2 GB available space
    • Sound Card: Any (microphone recommended)
    • Additional Notes: Online co-op for 1-4 players through Steam. A microphone is recommended for proximity voice chat.
    Minimum:
    • OS: macOS 10.15
    • Processor: Apple M1 / Intel Core i5 quad-core
    • Memory: 8 GB RAM
    • Storage: 2 GB available space
    • Sound Card: Any (microphone recommended)
    • Additional Notes: Online co-op for 1-4 players through Steam. A microphone is recommended for proximity voice chat.
    Recommended:
    • OS: macOS 13 Ventura or later
    • Processor: Apple M1 Pro / M2 or better
    • Memory: 16 GB RAM
    • Storage: 2 GB available space
    • Sound Card: Any (microphone recommended)
    • Additional Notes: Online co-op for 1-4 players through Steam. A microphone is recommended for proximity voice chat.
* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.