These versions often include community patches or cracks that allow the games to run without legacy launchers (like older versions of Uplay) that can sometimes be buggy on modern Windows 10/11 systems. The Trade-offs and Risks
A "repack" is a version of a game where the files have been heavily compressed to make the initial download smaller. CorePack was a well-known group that specialized in this, often stripping out "unnecessary" files like multi-language voiceovers or lower-resolution videos to save space. Assassin’s Creed Anthology – RePack by CorePack
RePacks use heavy "lossy" or "lossless" compression. While the download is fast, your CPU has to work incredibly hard to decompress the files. An installation that takes 10 minutes for a retail game might take two hours for a repack. These versions often include community patches or cracks