Sometimes the game doesn't recognize the DLC even if it's installed. You can force a refresh by:
appears in the top-left or center-right of the main menu. You must manually click this to "Restart with DLC Enabled." File Validation : The game checks for a specific file (usually oxygen not included dlc unlocker work
If you are in "Base Game" mode, you won't see any DLC features like rocketry or radioactive biomes, even if you own it. 4. Resolving Mod Conflicts Sometimes the game doesn't recognize the DLC even