Files from unofficial sources often contain Trojans or cryptocurrency miners.
The file name you mentioned ( .iso with "Repack" in the title) typically indicates a version of the game distributed outside of official storefronts. Users should be aware of the following risks: Brewmaster.Beer.Brewing.Simulator-Repack.iso
If you are looking for a technical summary or an overview of the game for a project, here is the essential information regarding the title: Game Overview: Brewmaster Files from unofficial sources often contain Trojans or