This indicates the game was sourced from GOG.com . This is notable because GOG games are DRM-free , meaning the .zip likely contains a standalone installer or the game files themselves that do not require an internet connection or a secondary launcher (like Steam) to run.
A standard compressed folder used to make the game's data easier to download and transfer. Dome.Keeper.v1.3.1-GOG.zip
The specific version of the game. This version typically includes the "Assessor" update or subsequent balancing patches released after the game's initial launch. This indicates the game was sourced from GOG
If you didn't download this yourself from the official GOG storefront, be cautious. Files with this naming convention are common on third-party sites and can sometimes be bundled with unwanted software. The specific version of the game
The game itself, where you defend a glass dome from alien waves while mining for resources beneath the surface.