4-Player Co-op
Subnautica 2 Multiplayer Guide
Cross-play, drop-in/drop-out and practical launch-week roles for a four-player first session.
How 4-player co-op works
- Up to 4 Players — form a team of up to four Pioneers in any single-player save. Drop-in / drop-out, no separate multiplayer slot.
- Cross-Platform — Steam lists cross-platform multiplayer. PC and Xbox are the confirmed Early Access platforms. PlayStation and Switch are not supported — see platform availability.
- Group setup — plan host, voice chat and beacon naming before your first long session. Public matchmaking details should be checked in-game.
- Optional — the game is built single-player-first. No story or content is locked behind multiplayer.
Role Splits
The four roles a smooth team uses
| Role | Primary Job | Recommended Gear | Priority Unlock |
|---|---|---|---|
| Quartermaster | Stays near base, refines materials, monitors power and keeps spare food, water and oxygen ready. | Builder, repair tool, spare batteries | Stable first base |
| Gatherer | Runs short resource loops and feeds the Quartermaster a steady supply of basic materials. | Scanner, tank upgrade, beacon | Reliable resource loop |
| Scout | Pushes outward, drops beacons, records landmarks and confirms map markers. | Beacon stack, scanner, spare oxygen | Safe route outward |
| Biologist | Scans fauna and flora, tracks food and water, and warns the team before entering unknown ecosystems. | Scanner, food, water, first aid | Creature knowledge |
Trailer
See the team in action
Co-op risk patterns to watch
Treat these as launch-week safety habits until players confirm exact creature behavior:
Tight caves
Clustered players burn oxygen faster and block each other on exits. Send one scout in, keep the rest near the entrance, and mark the route with a beacon.
Resource noise
Four players strip a small area quickly and can lose their route home. Assign one player to beacon placement before everyone fans out.
Open deep water
Distant landmarks are already driving Reddit map speculation. Do not send the whole team toward an unconfirmed point until one scout has checked the return route.