: The base game data, including the engine and assets required to run the sandbox.
: An executable (often Updater.exe ) designed to sync your local files with a third-party server to download the latest patches or community content. File: Garrys.Mod.Incl.Auto.Updater.zip ...
: This version is typically used by those who cannot access the official version or are running dedicated servers. However, for the best experience, including access to the Steam Workshop (which hosts millions of addons), the official version on Steam is the standard choice. : The base game data, including the engine