Antewise

Oxygen Not Included Survival Guide

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

The air loop

Algae diffusers are a start, but electrolysis is the real answer. Automate it before your algae runs dry.

The water loop

Water feeds oxygen and farms. Recycle toilet and shower water so the supply does not drain.

Food before fancy

A farm that feeds the colony matters more than a fancy refinery. Feed duplicants first, automate later.

Waste is a system

Sewage and polluted water need a home. Build the bathroom and the treatment before the base backs up.

Watch the trend

If oxygen dips each cycle, a loop leaks. Fix the loop before you dig more.

Build the spine

The building database lists the air and water kit. Place it before you expand the base.

Keep a buffer

Store spare oxygen and water so a hiccup does not become a wipe. A small tank buys time.

Vent the bad air

Carbon dioxide and other gases sink. Pump them out or your duplicants slow and sicken.

Feed the chain

The critter database shows species that produce food. Ranch a few to steady the diet.

Clear the gas

Stale gas settles in low rooms and drags the pace of work. Clear it out before duplicants breathe it too long.

Keep a stock

A small reserve of oxygen and water rides out a bad cycle. Tuck it near the base core for quick access.

Mind the diet

Count what the colony eats each cycle. A farm that trails the mouths will eventually starve them.

Life-support buildings

  • 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 tied to survival

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

Frequently asked questions

What keeps a colony alive?

Oxygen, clean water, food and a way to handle waste. Drop one and the others fail in turn.

Why does oxygen run out?

Diffusers have a limit and algae is finite. You must automate electrolyzers and water recycling before the early supply ends.

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.