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Subnautica: Below Zero

Subnautica: Below Zero

Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.

Released May 13, 2021 Developer Unknown Worlds Entertainment Platforms Windows · Mac Open World Survival CraftSurvivalUnderwaterSingleplayerOpen World
View on Steam ↗ $29.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

90.6%positive96,660 reviews

What reviewers agree on

Praised
Criticised
Bar length = how many of the 104 reviews raise the point On criticised points, the pale part = reviewers who still recommend the game Select a point to see the exact counts and what reviewers wrote.

Counted across 104 English reviews, sampled to match this game's 90.6% positive rating · as of 2026-05-20

Recommended · 78 found this helpful

“There's a lot of negative opinions about Below Zero, especially compared to the first game. But going immediately from first game to BZ, I don't get the issues. The first game is more open world, environmental storytelling, Below Zero is more enclosed, personality and character…”

— a player, Steam review · 28 hrs played
Recommended · 25 found this helpful

“I mean, I had more fun with the first game, but this one was good too. I hope Subnautica 2 comes out, I'm guessing that one will be even better.”

— a player, Steam review · 24 hrs played
Recommended · 14 found this helpful

“I have about 250 hours in the original Subnautica and I just got around to playing BZ. I'd heard so much about how disappointing it was compared to the original so I put off playing it for a long time, but having finished it now I can say with 100% certainty it is still an…”

— a player, Steam review · 25 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 13:02 UTC · history via SteamCharts.

1,491playing at last check
1,47024-hour peak
42,057all-time peak
0 10k 20k 2020 2021 2022 2023 2024 2025 2026 11k avg · May 2021

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

13achievements
37.2%median completion
20.3%rarest: Finding the Cure
88.4% of players 63.1% of players 61.0% of players 51.6% of players 39.4% of players 37.8% of players 37.2% of players 33.2% of players 30.5% of players 25.0% of players 25.0% of players 23.7% of players 20.3% of players 88.4% 0% most earned rarest
Almost everyone has
88.4%Drop in the Ocean — Hidden achievement
63.1%Truckin' — Hidden achievement
61.0%Xenobiology — Hidden achievement
Rarest badges of honor
20.3%Finding the Cure — Hidden achievement
23.7%Into the Unknown — Hidden achievement
25.0%Dressed For The Weather — Hidden achievement

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$29.99current · sampled 2026-07-26 08:39 UTC
$29.99lowest since tracking began2026-07-11
US29.99 USD
EU29.99 EUR
UK25.99 GBP
Australia44.95 AUD
Canada39.99 CAD
Japan4,300 JPY
Brazil124.50 BRL
China149.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$22 Brazil Japan Canada US Australia EU UK≈$35

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $25 $50 07-11 07-13 07-16 07-19 07-22 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Apr 01, 2026
Subnautica Free Weekend & Series Sale

Hello Subnauts, With Subnautica 2's Early Access launch on the horizon, we're hosting a Free Weekend for Subnautica, the game that started it all. From April 2nd at 10:00 AM PT through April 6th at 9:

Oct 03, 2025
Below Zero Security Hotfix

We have released a hotfix today that addresses a security-related concern raised to us by Unity. You can read more about the specific issue here: https://unity.com/security/sept-2025-01/ While the upd

Aug 12, 2025
Below Zero 2025 Patch

We’ve just released a brand new patch full of bug fixes and improvements for Below Zero! This update will roll out worldwide and might take some time to appear across the globe. PC & Console Added a p

Oct 18, 2024
Subnautica 2 Early Access Coming 2025

We’re thrilled today to unveil the first teaser trailer for Subnautica 2 and announce that we’ll be heading to Early Access in 2025! 🥳 https://www.youtube.com/watch?v=WS0vTRl_2PQ Store pages are now l

Oct 04, 2022
Teeny-Tiny Hotfix

Hello Subnauts! We’ve released the Teeny-Tiny Hotfix - a patch to resolve a few bugs from our last update What the Dock. Fixes: Ambient water particles are now showing correctly Fix to allow new scree

Games like Subnautica: Below Zero

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAdventure, Indie
Player tagsOpen World Survival Craft · Survival · Underwater · Singleplayer · Open World · Horror · Exploration · Base-Building · Indie · Adventure · Crafting · Multiplayer (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · Steam Trading Cards · Steam Cloud · Remote Play on TV · Family Sharing
LanguagesEnglish * , French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Spanish - Latin America, Russian, Simplified Chinese, Turkish, Ukrainian, Czech, Finnish, Hungarian, Polish, Traditional Chines…
ControllerFull support
Achievements13
Estimated owners2,000,000 – 5,000,000 (SteamSpy)
Official sitehttps://unknownworlds.com/subnautica
Minimum system requirements (PC)

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