Compression makes the initial download faster.
It allows the game, the crack, and the "NFO" (information file containing installation instructions) to be bundled into a single package. Ethical and Technical Risks
Downloading files from unofficial sources is a primary vector for malware, trojans, and miners.
In the world of software piracy, a "Scene Group" is an organized collective that "cracks" the Digital Rights Management (DRM) of games—such as Steam's internal protection or Denuvo—to make them playable without a legitimate purchase.