What'Sub

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.

At a glance

• Platform: Windows.
• Genres: Action, Adventure, Indie, Simulation, Early Access.
• Release date: May 14, 2026.
• Steam user reviews: Mixed (67% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

CDKeyCheap does not sell keys. We track and display prices; every purchase happens on the store you click through to.