Co-op Basics
StarRupture supports up to 4 players in host-based multiplayer. The host creates a persistent world where all progress is saved.
💡 Multiplayer Setup: Host loads save → Pause menu → Change visibility to "Friends Only" or "Invite Only" → Press "Go Online"
Team Roles
While StarRupture has no formal classes, specializing into these 4 roles maximizes team efficiency:
🛡️ Defender / Soldier
- Patrol base perimeter during Rupture cycles
- Clear hostile wildlife and enemy camps
- Escort Explorers into high-risk areas
- Manage turret ammunition and defenses
🔧 Builder / Engineer
- Design and expand base infrastructure
- Construct production lines and rail systems
- Optimize factory layouts for efficiency
- Manage power distribution
🔬 Researcher / Scientist
- Manage OCL contracts and corporation progression
- Automate production lines for materials
- Research and unlock new technologies
- Coordinate resource allocation
🗺️ Explorer / Biologist
- Map the open world and scout new areas
- Locate rare resources and ore deposits
- Mark points of interest for the team
- Gather samples and research materials
💡 Tip: Enemy waves scale with player count. Coordinate defenses accordingly.
Priority Unlocks for Co-op
Focus on these corporation levels for coordinated team play:
1. Moon Energy Level 3 - Map
- Full map reveal for coordinated exploration
- Essential for long-term planning
2. Selenian Level 2 - Fabricator
- Process materials for delivery items
- Advance all corporations efficiently
3. Griffits Blue Level 2 - Pistol Blueprint
- Ensure all players have basic weapons
- Critical for early defense
Co-op Strategies
Communication
Use clear callouts for effective coordination:
- "Low on copper" - Resource shortages
- "Swarm east side" - Enemy locations
- "Heat wave incoming" - Environmental hazards
Resource Management
- Coordinate resource gathering to avoid duplication
- Automate production lines early
- Set up smelters near excavators
- Establish efficient rail transportation
Base Building
- Choose locations with basic and advanced resources
- Minimize enemy presence near base
- Build essential structures: Base Core, Habitat, Airlock, Solar Panels
- Leave space for expansion
Important Caveats
⚠️ Avoid "Deconstruct All": Using the "Deconstruct All" feature in co-op can cause desync issues. Manually deconstruct structures instead.
💡 Host Management: The host should coordinate major base changes. Non-hosts may experience lag when placing many structures at once.
- Save frequently - co-op sessions can desync
- If players see different base states, restart the session
- Enemy wave difficulty scales with player count
- Only the host's world persists - guests don't keep progress in their own saves
⚠️ Early Access Notice: StarRupture entered Early Access on January 6, 2026. Multiplayer features may change with future patches.
Related: Base Building Guide · Corporation Guide · Best Base Locations