PCGame

Subnautica: Below Zero

Open-world underwater survival adventure with crafting and an arctic mystery

Unknown Worlds Entertainment · Released May 13, 2021

AdventureIndie

Reviews
Very Positive
90% of 106K
Recent reviews
Very Positive
87% of 343 in 30 days
Players
379
daily peak, Nov 7, 2026
Steam Deck
Verified
Last update on Steam
1 year ago
Oct 3, 2025
Minimum PC
HD 530
8 GB RAM · 15 GB disk
Full requirements

What is Subnautica: Below Zero?

A single-player open-world survival adventure set in an arctic region of the alien ocean world Planet 4546B. You gather resources, craft equipment and vehicles, build habitats, explore underwater and on land, and investigate abandoned stations to learn what happened to the protagonist’s sister.

For you if...

  • +you like underwater exploration, resource gathering, and base building
  • +you want a survival game with a character-driven story
  • +you prefer exploring alone in an open world

Not for you if...

  • −you expect a map as large as the original’s
  • −you dislike voiced protagonists and frequent story dialogue
  • −you want survival focused almost entirely underwater

What players say

90% of 106,176 reviews are positive · 87% of 343 in the last 30 days

Players praise the biomes and creatures, along with base-building and quality-of-life improvements. Common complaints are that the map feels smaller and more cramped than the original, travel feels slow, and the writing and dialogue weaken the story.

Players over time

▼ -31% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 607 players on Sep 21, 2026.

Show the data
DayPlayers
Nov 7, 2026379
Nov 6, 2026260
Nov 5, 2026249
Nov 4, 2026266
Nov 3, 2026271
Nov 2, 2026266
Nov 1, 2026422
Oct 31, 2026381
Oct 30, 2026269
Oct 29, 2026245
Oct 28, 2026217
Oct 27, 2026325
Oct 26, 2026336
Oct 25, 2026457
Oct 24, 2026398
Oct 23, 2026314
Oct 22, 2026315
Oct 21, 2026342
Oct 20, 2026381
Oct 18, 2026441
Oct 17, 2026448
Oct 16, 2026365
Oct 15, 20260
Oct 14, 2026368
Oct 13, 2026410
Oct 11, 2026508
Oct 10, 2026470
Oct 9, 2026437
Oct 8, 2026388
Oct 7, 2026483
Oct 6, 2026468
Oct 4, 2026501
Oct 3, 2026459
Oct 2, 2026402
Oct 1, 2026360
Sep 30, 2026344
Sep 29, 2026352
Sep 27, 2026399
Sep 26, 2026392
Sep 25, 2026382
Sep 24, 2026327
Sep 23, 2026340
Sep 23, 2026354
Sep 22, 2026376
Sep 21, 2026607

How many players finish Subnautica: Below Zero?

24% of Steam players have unlocked «Into the Unknown», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Subnautica: Below Zero screenshot 1

Subnautica: Below Zero system requirements

Minimum: HD 530, 8 GB RAM, 15 GB of disk space.

As published by the developer.

Can my PC run Subnautica: Below Zero?

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Minimum

OS
Windows 7 64-bit
Processor
Intel Core i3 4XXX series / AMD Ryzen 3 2.6ghz+
Graphics
Intel HD 530 or better
Memory
8 GB RAM
Storage
15 GB available space
DirectX
Version 11

Recommended

OS
Windows 10 64-bit
Processor
Intel Core i5 4XXX series/ AMD Ryzen 5 @ 3Ghz +
Graphics
Nvidia 1050 Ti / AMD Radeon 570, 4GB VRAM
Memory
8 GB RAM
Storage
15 GB available space
DirectX
Version 11

Does Subnautica: Below Zero have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Subnautica: Below Zero 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, macOS
Achievements
13
Steam features
Cloud saves, Family Sharing, Trading cards
Languages
Full audio: English. Text only: French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Spanish - Latin America, Russian, Simplified Chinese, Turkish, Ukrainian, Czech, Finnish, Hungarian, Polish, Traditional Chinese, Slovak.

Does Subnautica: Below Zero 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 Nov 6, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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