Ensure your game files match the 24022022 build date in the properties menu.
Play as Atlas and P-Body in the complete cooperative storyline.
Always ensure you are downloading from reputable digital storefronts like or authorized keysellers. Using official platforms ensures you receive the latest security patches and the most stable version of the 24022022 build. Official versions also provide the easiest access to the Steam Workshop , which essentially gives you infinite content once the main story is over. System Requirements (Minimum) OS: Windows 7 / Vista / XP Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) Memory: 2 GB RAM Graphics: ATI Radeon X1900 or NVIDIA GeForce 7600 Storage: 8 GB available space