: Because the files are so tightly packed, your computer must work much harder to unpack them. A highly compressed game can take hours to install, whereas an official version installs as fast as your drive allows.

: Files hosted on third-party sites often contain "cracks" or installers that can trigger antivirus software or harbor actual spyware and ransomware.

: To save space, some repacks remove "non-essential" data like high-resolution textures, multiplayer components, or localized voiceovers for different languages.