Subnautica 2 · Base Building
Subnautica 2 rebuilds construction for co-op. Four divers share one home on the seabed, with every corridor, rule and placement detail Unknown Worlds has shown.
Featured
The dev vlog where every module and rule was shown on camera.
Mar 12, 2026 · 4:03
System · 6 confirmed
Confirmed details from the Building Bases dev log and Unknown Worlds Q&A.
System
Fully redesigned modular builder, not a copy of Subnautica 1
Shared build
Any crew member can place parts, not just the host
Decoration
Deeper decoration layer with placement rules
Hull
Depth, pressure and oxygen still matter for every room
Power
Modular power sources hinted at in the Building Bases vlog
Docking
Tadpole and future vehicles dock directly into base modules
Modules · 6 categories
Core rooms
Corridors · Multipurpose rooms · Observation rooms
Utility
Hatches · Water locks · Reinforcement pieces
Fabrication
Fabricator · Modification station · Charging stations (teased)
Power & life
Solar / bio / thermal generators · Battery banks · Oxygen plants (teased)
Decoration
Posters · Plants · Lighting sets · Seats and tables
Co-op specific
Shared storage · Multi-seat consoles · Bunk modules