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Oxygen Not Included: Neutronium Cosmetics Pack cover art

DLC / add-on · Klei Entertainment

Oxygen Not Included: Neutronium Cosmetics Pack

SteamEurope and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.

Class up your colony with the Neutronium Cosmetics Pack! This small collection of cosmetic blueprints contains regal neutronium-themed restyling options for buildings, jet suits and atmo suits, as well as a swanky new Duplicant.

Before you buy

Redeem on
Steam clientPC: Windows, macOS, Linux. Needs a free Steam account.
Activates in
Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.Activates on accounts registered in the EU, EEA, Switzerland and the United Kingdom.Will not activate on accounts registered in North America, Asia, Latin America or Oceania.
You get
A digital activation keyAn add-on. You need the base game on the same account.
Delivery
To your account and by emailDelivered to your account and by email once it is ready. Some orders get a short manual check first.

Screenshots

01 / 03

Oxygen Not Included: Neutronium Cosmetics Pack

Screenshot 1 of 3

About this add-on

About This Content

Has anyone ever asked what it'd look like if ONI buildings and atmo suits were made out of refined Neutronium? Or what a regal Duplicant might look like? Maybe, maybe not. Either way, we made this because our art team likes making cool things. This small themed collection of cosmetic blueprints is a tribute to outer-space opulence. Whether you want to class up your colony or you just like the idea of supporting our dev team's ongoing efforts to sustain and expand ONI, these are for you.

What's inside?

  • A new Duplicant named Sena

  • 3 new Neutronium-themed clothing blueprints

  • A Neutronium-themed wallpaper

  • Two Neutronium-themed ceiling trim blueprints

  • A complete Neutronium-themed Atmo Suit blueprint

  • A complete Neutronium-themed Jet Suit blueprint

  • 18 new Neutronium-themed building blueprints

Description, images and details are taken from this product's Steam page.

Details

Developer
Klei Entertainment
Publisher
Klei Entertainment
Base game
Oxygen Not Included
Released
20 Nov, 2025
Genres
Strategy, Simulation, Survival, Indie
Runs on
Windows, macOS, Linux
Activates on
Steam client, Europe and UK
Interface
English, Simplified Chinese, Korean, Russian
Full audio
English, Simplified Chinese, Korean, Russian
  • Single-player
  • Downloadable Content
  • Steam Trading Cards
  • Family Sharing

System requirements

Windows

  • Requires a 64-bit processor and operating system
Oxygen Not Included: Neutronium Cosmetics Pack system requirements on Windows
ComponentMinimumRecommended

Activating it on Steam client

  1. Open the Steam client and sign in.
  2. Choose Games in the top menu, then Activate a Product on Steam.
  3. Paste the key and confirm. It appears in your library.
  4. You need the base game on the same account.

The key is listed for the Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom. region. Read how regions work before you buy.

Oxygen Not Included: Neutronium Cosmetics Pack€5.34