Files with names following the "GameName.Build.Number.rar" format are often distributed through third-party file-sharing sites or "repack" communities rather than official storefronts like Steam or GOG .
: This build format is typically associated with the PC version of the game. Oaken.Build.9839138.rar
The number 9839138 in the filename likely refers to the , a unique identifier used by the Steam platform to track specific versions of a game's files. Files with names following the "GameName