from unofficial sources is not recommended due to significant security risks, potential data loss, and likely gameplay issues. Highly compressed "repacks" are often pirated versions that may contain malware, adware, or cryptominers Instituto Espaillat Cabral

You do not need the whole 250GB game. When installing via the Battle.net launcher:

By following these guidelines, you can enjoy a safe and enjoyable gaming experience with Call of Duty: Black Ops Cold War on PC.

In the world of PC gaming repacks, "highly compressed" refers to a version of the game that has been ripped, repacked, and compressed using specific algorithms (like FreeArc or LZMA) to reduce the file size dramatically.