It is critical to state the obvious: They do not have permission from publishers (EA, Ubisoft, Activision, etc.) to redistribute their software.

A "repack" is a video game that has been compressed using advanced algorithms to reduce its overall file size. Kaos Repacks focuses on taking modern AAA titles—which can often exceed 100GB—and shrinking them down to a fraction of their original size.

: Like other repackers, they use custom installation interfaces that often include their own branding and background music. How KaOs Repacks Work

: Known for the smallest possible sizes, but often requires very long installation times and high CPU usage.