If you have already downloaded the "9957198" file, it is strongly recommended to delete it and perform a full system scan with reputable antivirus software.
The latest stable release is Build 722606 , released on April 15, 2026. Oxygen.Not.Included.Build.9957198.zip
Use the SteamDB Oxygen Not Included Patch Tracker to cross-reference your version with the latest legitimate build. If you have already downloaded the "9957198" file,