Pick Subnautica 2 if…
You want the new ocean, you want to play with friends in 4-player co-op, or you want to be on the ground floor as content lands during Early Access.
Series comparison
Subnautica 2 vs Subnautica 1 (and Below Zero)
How the Subnautica 2 Early Access compares with the original Subnautica and Below Zero on co-op, platforms, story format, and what you get at launch.
Quick answer: The biggest difference is 4-player online co-op with cross-platform multiplayer — a series first. Subnautica 2 also launches into Early Access on May 14, 2026, while Subnautica 1 and Below Zero are already finished 1.0 builds with full single-player stories.
| Aspect | Subnautica 2 | Subnautica (2018) | Below Zero (2021) |
|---|---|---|---|
| Release | Early Access — May 14, 2026 | Original Subnautica 1.0 — January 2018 (after 4+ years of Early Access) | Subnautica: Below Zero 1.0 — May 2021 |
| Launch price | $29.99 USD (Early Access) | $29.99 USD | $29.99 USD |
| Co-op / multiplayer | Online co-op for up to 4 players + cross-platform multiplayer | Single-player only (no official co-op) | Single-player only |
| Setting | New alien ocean — biomes, creatures, and story revealed during Early Access | Planet 4546B — survival after a starship crash | Planet 4546B — frozen polar region, returning protagonist context |
| Story format | Some narrative at launch, more story content rolls in during Early Access | Full single-player story arc at 1.0 | Tighter, character-driven story at 1.0 |
| Platforms | Steam, Epic, Xbox Series X|S, Xbox on PC, ROG Xbox Ally, Game Pass Ultimate, PC Game Pass | Steam, Epic, PlayStation 4/5, Xbox One/Series, Switch, Mac | Steam, Epic, PlayStation 4/5, Xbox One/Series, Switch, Mac |
| Game Pass at launch | Yes — day-one Game Preview on Game Pass Ultimate and PC Game Pass | Added later | Added later |
| Build maturity | Early Access baseline — biomes, creatures, craftables, vehicles, and story will expand over time | Final 1.0 build with established meta | Final 1.0 build |
Stay on Subnautica 1 if…
You want a finished, single-player story experience without waiting for updates, and you have not played the original yet.
Try Below Zero if…
You finished the original and want a tighter, character-driven story in a frozen polar variant of the same world.
What is genuinely new in Subnautica 2
- ▸Online co-op for up to 4 players — the original and Below Zero are single-player only. This is the headline change for the series.
- ▸Cross-platform multiplayer between Steam, Epic, Xbox on PC, and Xbox Series X|S.
- ▸Day-one Game Pass via Game Preview on Ultimate and PC Game Pass.
- ▸Living Early Access build — content expands over time rather than launching as a finished 1.0.
What carries over from the series
- ▸The Subnautica core loop: scan, gather, craft, dive deeper, build a base.
- ▸Oxygen and depth pressure remain the central tension.
- ▸Vehicles, habitats, and progression-locked biomes shape the exploration arc.
- ▸Same studio (Unknown Worlds), so the visual language and creature design philosophy stay consistent.
Frequently asked: Subnautica 2 vs Subnautica 1
Is Subnautica 2 a sequel or a spin-off?
Subnautica 2 is the next mainline entry from Unknown Worlds, set in a new ocean. Subnautica: Below Zero (2021) was a smaller follow-up to the original.
Does Subnautica 2 add multiplayer to the series?
Yes. Subnautica 2 is the first game in the series with official online multiplayer, supporting up to 4-player co-op with cross-platform play between PC and Xbox.
Will Subnautica 2 replace Subnautica 1?
No. The original Subnautica and Below Zero remain available as finished single-player experiences. Subnautica 2 is a separate ocean with its own progression and a co-op mode.
Should I play Subnautica 1 before Subnautica 2?
You do not need to. Subnautica 2 stands on its own. If you want context for the universe and have never played the original, Subnautica 1 is still a strong place to start.
Is Subnautica 2 a complete game at launch?
No. It launches in Early Access. The first build includes several biomes, some narrative, and a starter set of creatures and craftables — more content lands during Early Access.
Launch hub
Date, price, and Early Access scope.
Multiplayer
4-player co-op and cross-platform notes.
Game Pass
Subscription access on day one.
Launch planner
Platform pick and pre-launch checklist.