Co-op guide

Subnautica 2 multiplayer

Subnautica 2 supports solo play and optional online co-op with up to three friends, so route planning matters more than ever.

Subnautica 2 multiplayer
Official Subnautica 2 Early Access gameplay trailer thumbnail from Unknown Worlds.

Co-op changes the way players need guides

Unknown Worlds describes Subnautica 2 as playable alone or with up to three friends in co-op. That changes guide demand. Players need pages for hosting, joining, shared goals, base roles, scan routes and what happens when a crew explores at different speeds.

  • Pick one shared objective before every dive.
  • Keep one player focused on scanning and route notes.
  • Avoid splitting too far before the crew has mobility and oxygen support.
  • Use base storage labels so co-op crafting does not become chaos.

Early Access co-op status

The official roadmap says the second update is expected to focus on requested co-op improvements and additions. Multiplayer pages should therefore be updated after each patch instead of assuming launch behavior is final.

TopicCurrent answerWatch item
Player countSolo or up to 4 playersBalance changes
ProgressionHost and crew behavior needs clear testingSave and unlock edge cases
Base planningShared bases are usefulStorage and permissions
CrossplayPC and Xbox ecosystem focusStorefront compatibility details

Fast answers

FAQ

Is Subnautica 2 multiplayer?

Yes. It has optional online co-op for up to four total players.

Can I play Subnautica 2 solo?

Yes. Solo play remains supported.

Will multiplayer change during Early Access?

Yes. Unknown Worlds has already pointed to requested co-op improvements in the Early Access roadmap.