Subnautica 2

Underwater survival adventure on an alien world with optional co-op

Unknown Worlds Entertainment · Released May 14, 2026 · Early Access

Reviews: Very Positive; 91% of 120K
Recent reviews: Very Positive; 82% of 1,447 in 30 days
Players: 1,736; daily peak, Oct 28, 2026
Steam Deck: Verified
Last update on Steam: 3 weeks ago; Oct 6, 2026
Minimum PC: GeForce GTX 1660; 12 GB RAM · 50 GB disk; Full requirements

What is Subnautica 2?

This first-person, open-world survival adventure takes place in an alien ocean, where you are stranded after a colony ship's journey goes wrong. You scan wildlife, explore ruins, build bases, and pilot a submersible into deeper waters. The world and story are still expanding during Early Access.

For you if...

+you enjoy investigating mysteries as you venture into deeper waters
+you want cooperative survival with up to three friends

Not for you if...

−you avoid deep water, dangerous creatures, and horror elements
−you want a finished world and complete story

What players say

91% of 120,388 reviews are positive · 82% of 1,447 in the last 30 days

Players praise the tense underwater atmosphere, intuitive base building, and the Tadpole submersible.

Screenshots and trailer

Subnautica 2 system requirements

Minimum: GeForce GTX 1660, 12 GB RAM, 50 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 10/11
Processor: Intel Core i5-8400 / AMD Ryzen 5 2600
Graphics: GeForce GTX 1660 6GB / RX 5500 XT 6GB
Memory: 12 GB RAM
Storage: 50 GB available space
DirectX: Version 12
Notes: Requires a 64-bit processor and operating system

Does Subnautica 2 have co-op or multiplayer?

Yes: co-op online. It also has a single-player mode. Crossplay with other platforms is declared.

Does Subnautica 2 run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck
External controllers are not supported for the primary player

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Steam features: Cloud saves, Family Sharing
Languages: Full audio: English. Text only: German, Korean, Portuguese - Brazil, Spanish - Latin America, French, Japanese, Simplified Chinese, Italian, Russian, Ukrainian.

Does Subnautica 2 use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam