Antewise

Oxygen Not Included Base Building Guide — A Base That Scales

Updated 20 Oct 2026 Source Synthesized from published Oxygennotincluded guides; rewritten in original wording on 20 October 2026 By

Zones, not rooms

Think in zones: living, farming, power, refining. Seal them so heat and germs stay where you put them.

Vertical planning

Dig down for cold, build up for clean. A column layout keeps hot machines away from your food.

Leave a spine

Keep a main corridor and a power line through the base. Future builds plug into it instead of restarting it.

Expand in layers

Grow outward by system. A planned base scales; a sprawling one strands your duplicants in bad air.

Insulate the heat

Wrap hot rooms in insulation. A small gap lets heat creep into the farm next door.

Use the catalog

The building database groups structures by use. Pick by zone, then place with margin.

Seal the dirty

Put bathrooms and polluted water in their own sealed room. Germs travel through the air otherwise.

Keep it reachable

Wide paths let duplicants move fast. A cramped base wastes the time automation freed.

Check the list first

The critter database shows who shares your base. Plan their pens away from the clean zone.

Separate clean and dirty

Bathrooms and polluted water stay in their own sealed room. Germs travel through shared air otherwise.

Keep paths wide

Wide corridors let duplicants move fast. A cramped base wastes the time automation freed.

Build around the spine

A central corridor and power line let every new room plug in. Plan it before you dig wide.

Buildings to zone by

  • Printing Pod (cat Buildings, effect Light Range: 5 tiles)
  • Plumbing (Building)
  • Decor
  • Cell of Interest
  • Stations (Building)
  • Rocket
  • Base (Building)
  • Utilities (Building)
  • Power (Building)
  • Building
  • Refinement (Building)
  • Overheating
  • Radiation Sensor
  • Rocketry (Building)
  • Piping
  • Ventilation (Building)
  • Furniture (Building)
  • Great Monument (cat Buildings)

Critters to plan around

  • Shine Bug
  • Critter
  • Drecko
  • Plug Slug
  • Hatch
  • Egg
  • Critter Morphs
  • Pacu
  • Puft
  • Gassy Moo
  • Morb
  • Shove Vole
  • Pokeshell
  • Slickster
  • Pip

Frequently asked questions

Where should I build first?

Around your starting biome, with room to separate dirty, hot and clean zones as you expand.

How do I keep systems apart?

Separate farms, power and refineries. Heat and germs spread, so give each its own sealed space.

More Oxygen Not Included guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.