A recent update in Oxygen Not Included has players wondering how to opt into testing the Thermal Upgrade. Klei Entertainment recently put up a blog post detailing the requirements and what to expect if you decide to participate. Essentially, the preview branch they’ve released will be a very early and unstable build of an upcoming update called the Thermal Upgrade.
The Thermal Upgrade will contain bug fixes as well as a whole slew of new content. We know. We’re just as excited as you are!
Before you try out the process listed below it's important to note that this update is only available to those who have purchased Oxygen Not Included, and present save files will not be usable in this build.
If all of the above checks out for you, you can now properly carry on with the steps to upgrading to the preview branch.
How To Update Oxygen Not Included
Step 1: Close all instances of the game
Step 2: Access your Steam library and highlight Oxygen Not Included
Step 3: Right click and select properties.
Step 4: Navigate to BETAS, open the first dropdown, and select the thermal_upgrade option.
Step 5: Navigate to LOCAL FILES and select VERIFY INTEGRITY option.
Once you’ve finished these 5 simple steps, it should begin to update. The next time you launch and play the game you should see some new features. Hopefully, this guide on how to update Oxygen Not Included worked for you.
For more on this awesome space colony game, check out our first look which details how to get into the alpha, prepare yourself with some of our best tips for beginners, and learn how to get rid of those lethal chlorine gas clouds.