What'SUB is a 4-player co-op submarine extraction game where you pilot a rust-bucket submarine into the depths of the Bermuda Triangle to recover treasure from the ocean’s seafloor. Gear up, descent, risk everything to bring your haul back to the surface, then dive again to ever deeper levels.

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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?

“We're a tiny team of 6 people who have been working many long weeks on What'Sub to get it to this point. But to take it further and make this game the best version of itself, we need you!
Early access allows us to keep working on this game and improving on it, while also making sure that our players have a say in how it evolves.
For the small price of a cup of coffee, expect a game that is small, but growing rapidly. ”

Approximately how long will this game be in Early Access?

“We're planning to release the full game before the end of this year. We have a roadmap in the works with further details!”

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

“The plan for the full game is:
- New biomes, hazards, and upgrades
- More mission types and difficulty modifiers
- New factions and cosmetics

What is the current state of the Early Access version?

“This is a very early release with a focus on the core gameplay loop - it is still pretty simple. Despite this, we really think there's something to enjoy here.
Since we're actively building on it, you may run into bugs or other issues. We try to address these as soon as possible, before working on new features.
We try our best not to break compatibility with save games, but we cannot guarantee there won't be loss of progress as we add more features. ”

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

“We have a launch discount, but the base price of the game will remain the same. We won't be offended if you would rather come back and buy it later :)”

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

“We love to hear what our players have to say.
The game currently has a feedback system for players to report issues, so we can tackle them as soon as possible.
We really believe in our game, and we hope you will come along for the ride as we evolve What'Sub into a bigger, better version of itself! ”
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This game is not yet available on Steam

Planned Release Date: May 14, 2026

This game plans to unlock in approximately 13 days

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About This Game

What'Sub is a 1–4 player co-op extraction diver where you crew a rust-bucket submarine, descend into the Bermuda Triangle, and decide how deep your greed actually goes.

Descend into "The Well"

Navigate caverns, wrecks, and treacherous terrain. Visibility is limited. Hazards appear late. The deeper you go, the more long-lost treasure waits and the harder it gets to leave.

Risk It or Lose It

Make it back to the surface with your haul and keep everything: loot, upgrades, progress. Drown down there and lose everything you brought in. Every dive is a negotiation between what you stand to gain and what you're willing to gamble

Keep the Sub Running

The sub breaks down constantly, at the worst possible moment, for the least forgivable reason. Hull breaches, a stalled engine; the list of things that can go wrong is longer than the list of things working correctly. Patch it, smack it, restart it, and keep moving. It's not much, but it's all you've got.

The Ocean Never Repeats Itself

Procedurally generated levels mean no two dives are the same. There's always something new to discover and always a reason to go back down.

Strange Faces at the Bottom

The Well has its own residents. Meet the characters that call the deep home, buy cosmetics, and pry secrets about the Well out of the ones willing to talk.

Features

Online co-op for up to four players

Extraction mechanics with full loot loss on death

Interdependent submarine systems and crew roles

Characters, cosmetics, and a customizable submarine

Procedurally generated ocean levels

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10+
    • Processor: 2 cores
    • Memory: 8 GB RAM
    • Graphics: Dedicated, 4GB VRAM
    • Storage: 2 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
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