DLC / add-on · Klei Entertainment
Oxygen Not Included: The Aquatic Planet Pack
Dive into the deep end of space colony expansion in The Aquatic Planet Pack! This DLC features a new flooded planet with marine biomes, resources, critters, plants, and more. Towel not included.
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.
Trailers and screenshots
About this add-on
The Duplicants plunge into a world beneath the waves, where they will either sink...or learn to swim for the first time in ONI history!
Open the floodgates of The Aquatic Planet Pack to explore the uncharted waters of a new starting planet awash with marine biomes, bioluminescent plants and critters, expanded aquatic ranching, and splashy Duplicant action.
New Duplicant Skill Unlocked
Train your Duplicants to swim, and watch them cannonball right into the deep end! Once they've mastered nautical navigation, they can focus on colony-building instead of worrying about the pool being a little chilly.
They might still care about coworkers peeing in the pool, though.
Unreal Aquaculture
Explore flooded biomes full of remarkable marine critters, geysers, and plants that provide new foods, building materials, and even oxygen—including a puffed-up fish that drowning Dupes can sneak a life-saving breath from. It's everything an underwater colony needs to keep both their workers and their industrial expansion efforts afloat.
All-New Elements
Uncover a world of new elements that fuel construction, power, productivity, and refinement. Rubber production is especially useful, as it's used to craft higher-voltage insulated wires and rubber boots that prevent Duplicants' feet from getting too soggy.
Seaworthy Styles
Transform your colony into a bastion of nautical style with more than 100 new cosmetic blueprints! You'll find a deluge of cool new paintings, buildings, outfits, Atmo Suits and more in the Supply Closet.
Sole Survivor
Recruit a strangely evolved Duplicant from another colony! Somewhere between the sandy beaches and the deepest trenches of the abyss, this lone inhabitant lingers, watching closely to see whether yours is a colony worth joining...
New biomes to traverse, critters to tame, and resources to discover—dive into it all with The Aquatic Planet Pack!
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
- 11 Jun, 2026
- 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
| Component | Minimum | Recommended |
|---|
Activating it on Steam client
- Open the Steam client and sign in.
- Choose Games in the top menu, then Activate a Product on Steam.
- Paste the key and confirm. It appears in your library.
- 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.