Subnautica

Subnautica

Subnautica is a solo underwater adventure on Steam PC, with full controller support and English full audio; its interface supports English. At ≈ $5.71 from Kinguin, the appeal is the steady push into deeper waters: gather resources, manage oxygen and craft equipment as you explore. It suits players who want to set their own pace, uncover an alien ocean and build a base between expeditions. At $29.99 from Kinguin, compare the offer with your budget for a solo underwater adventure.

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97%Steam Reviews344.3K reviews87Metacritic/10084OpenCritic/100
Released: Jan 23, 2018
Open World Survival Craft · Survival · Horror · Underwater · Open World
Subnautica PC Steam CD Key+1·Platform:Steam·~ $25.73-78%from~ $5.71(~ €5.10)ALL-TIME LOWSave $24.28 vs SteamBuy now
Subnautica Steam CD Key+1·Platform:Steam·~ $33.57-83%from~ $5.81(~ €5.19)ALL-TIME LOWBuy now
Subnautica Global+1·Platform:Steam·-81%from~ $5.84ALL-TIME LOWBuy now
Subnautica Steam Key GLOBAL+1·Platform:Steam·-80%from~ $5.87ALL-TIME LOWBuy now
Subnautica PC+1·Platform:Steam·~ $33.69-80%from~ $6.69ALL-TIME LOWBuy now
Subnautica+1·Platform:Steam·~ $29.99-40%from~ $17.99Buy now
+1·Platform:Steam·~ $29.99-10%~ $26.99Buy now
+1·Platform:Steam·~ $33.25-10%~ $29.93Buy now
All-time low ~ $7.49across Steam & third-party storesat the recorded all-time low
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Price History

Past 36 months · Updated daily
Historical Low~ $7.492025-08Current Low Across Stores~ $26.99Steamvs. Historical Low+260%
~ $13.00~ $19.27~ $25.53~ $31.7925-1126-0226-0526-0826-11~ $7.49

Prices cover Steam and 39 authorized stores; only legitimate offers are counted. The chart shows weekly market-wide lows and Steam's official price across the past 36 months.

01About Subnautica

After crash-landing on an alien ocean planet, dive through reefs, caves and deep trenches to find resources and survive. On Steam PC, gather materials, craft diving gear and vehicles, and build underwater bases. Exploration ranges from sunlit reefs to dark caves and hot lava fields. Player reviews: 97% positive from 344,283.

Credits

Charlie Cleveland
DIRECTOR
Charlie Cleveland
video game director
NotableSubnautica
Developer
Unknown Worlds Entertainment
Publisher
Unknown Worlds Entertainment

Steam player reviews

97%positiveOverwhelmingly Positive344,283 Steam reviews

Lowest recorded in 36 months

$7.492025-08-13 · SteamBase game · same records as the chart above; USD history, not a regional Steam low.

Language support

LanguageInterfaceSubtitlesAudio
Simplified ChineseYesYes—
Traditional ChineseYesYes—
EnglishYesYesYes
Show 21 more languages
LanguageInterfaceSubtitlesAudio
FrenchYesYes—
GermanYesYes—
PolishYesYes—
RussianYesYes—
TurkishYesYes—
FinnishYesYes—
ItalianYesYes—
CzechYesYes—
HungarianYesYes—
SpanishYesYes—
DanishYesYes—
JapaneseYesYes—
KoreanYesYes—
Portuguese-BrazilYesYes—
BulgarianYesYes—
UkrainianYesYes—
DutchYesYes—
SwedishYesYes—
VietnameseYesYes—
Spanish-Latin AmericaYesYes—
PortugueseYesYes—

Steam PC edition data · 2026-11-12

02Before you buy

Language and controls

The Steam PC version has full controller support. Supported interface languages include English, and full audio is available in English.

Play mode

On Steam PC, Subnautica is a single-player adventure. Gathering resources, crafting equipment and building underwater bases are part of survival.

03Frequently asked questions

What do you do in Subnautica?

Explore an alien ocean, gather resources and craft equipment to venture deeper and survive.

Can I play solo?

Yes. The Steam PC version is listed as single-player.

What should I watch while diving?

Yes. Keep track of oxygen while exploring; darkness brings additional danger.

8.8
Overall Score
External ratings97%Steam Reviews344.3K reviews87Metacritic/10084OpenCritic/100
Graphics
9.2
Audio
9
Gameplay
8
Story
9.5
Content
8

“Underwater exploration survival merges environmental storytelling and Unity-engine pressure mechanics across eight million copies sold.”

Our Verdict

The Big Picture: Eight-Year Evergreen Founding Father of PC's "Peaceful School"

When the title officially launched in January 2018, the PC survival genre was dominated by "violent school" representatives like DayZ and Project Zomboid — zombies, PvP, permadeath were the mainstream survival recipe at the time. Unknown Worlds, a San Francisco indie studio, walked in with the opposite product: underwater exploration, almost no combat, strong story-driven, sci-fi mystery puzzle. This counter-trend bet succeeded — the title became one of the most immersive representatives in the PC survival genre, and opened the "peaceful school survival" subgenre, a small-studio technical-obsession success template within the wider PC scene.

Eight years on, the title still ranks in Steam's top 5 by positive rating for the survival category — Steam 91% positive, around 8 million cumulative sales, IGN 91/100, PC Gamer 89/100, OpenCritic 87/100. The May 2026 Subnautica 2 early access launch sold 4 million copies in five days, validating the global pull of the series in the wider market. The title's success spawned later "peaceful school survival" representatives like Raft, The Forest, Sons of the Forest, and Green Hell, one of the spiritual icons of "PC small-studio classic" titles, sitting alongside BeamNG, Pocketpair, and The Indie Stone in the "PC four evergreen small-studio titans" pantheon.

Who Should Buy: Exploration Players Who Accept Deep-Sea Pressure

Three audiences. Story-driven exploration fans — fans of sci-fi mystery works like 2001: A Space Odyssey, Interstellar, Arrival, or Ice Age; the environmental storytelling and sci-fi plot here are the ceiling of the genre. Survival genre peaceful-school players — players from DayZ or Project Zomboid wanting a different flavor; the "peaceful school survival" here is an entirely different experience from the violent school of the same generation. Base building enthusiasts — players who love building, decorating, and photography; the "deep-sea villa" construction is the most "cyber underwater romance" gameplay in PC gaming today.

If you fall into any of these three audiences, the title remains a must-play and the value is extraordinary. Base game is 30 USD normally and 7.5 USD at the typical -75% discount — one of the cheapest hardcore survival games on PC. After buying, strongly start with 10 hours of slow shallow-water exploration to learn the mechanics — this is the onboarding path Chinese top streamer "Deep Sea Veteran" repeatedly recommends. Do not rush the mainline; enjoy the underwater exploration itself — this is the core psychological hook behind the title's eight-year evergreen long tail.

Who Should Skip: Players With Deep-Water Phobia and Combat Fans, Please Walk Away

The title does not suit three audiences. Players with deep-water phobia — the underwater visuals and depth feel are extremely realistic, and many players genuinely get goose bumps near deep-sea large Leviathans. The studio specifically labels "deep-water phobia players proceed with caution" on the Steam store page, a rare official warning in PC gaming. If you fear deep water, please walk away — the first 30 minutes will already make you uncomfortable. Combat-thrill seekers — the title has almost no traditional combat weapons (just basic tools like the survival knife and the spear gun), emphasizing exploration, building, and puzzle-solving. If you want shooting and melee thrills, play DayZ or Rust instead. Players who want story speedruns — the story unfolds entirely through environmental storytelling, with no NPC quest-giver characters and no forced cutscenes. If you want "to be pulled along by the story," play The Last of Us or Red Dead Redemption 2 instead.

Unknown Worlds makes no attempt to please everyone. The intended audience is sharp: explorers, peaceful-school survivors, base builders. If you are not in that picture, walk away — you will not enjoy it and will only leave a bad review. This is also why the 91 percent Steam positive rating, while high, has not pushed the title into universal visibility — Subnautica remains a niche but extraordinarily immersive representative, with a clearly defined target audience of patient adult players willing to slow down and explore the underwater world.

Recommended Edition and Discount Floor: Base Game Plus 100 Hours of Investment

For entry, the Steam base game is the choice (original 199 RMB, normal -75% discount at 50 RMB), and patient buyers can wait for Steam seasonal lows at -80% (around 40 RMB). No expansions needed — all updates are free patches. The Below Zero expansion is optional — Chinese community consensus is "play the base game first, consider the expansion only if you want more." The 2026 Subnautica 2 is an independent sequel (not an expansion of the original); currently in early access, it is recommended to wait for the 1.0 release (expected early 2027) before considering.

PC players should disable the oxygen prompt sound after entering the game as the first step — many veterans agree: the suffocation feel of "running out of oxygen and unable to find the surface" is the purest experience the title delivers. The second step is installing localization optimization packs — community Chinese resources are essential for newcomers. The third step is putting on headphones — underwater immersion with headphones is more than ten times the desktop speaker experience. Console players can pick PS5, Xbox Series X, or Switch — one of the rare "full-platform" survival games. VR players can pick PSVR or PC VR for the most immersive underwater world experience, but note that players with 3D motion sickness or deep-water phobia should approach carefully. The bottom line: discounted price plus 60-hour main story plus deep-sea villa building still makes Subnautica the most immersive PC exploration survival game to pick up in 2026, no exceptions across the entire genre.

Expand to read the full review