Most "Highly Compressed" claims for games this size are clickbait designed to generate ad revenue or trick users into downloading unwanted software. Better Alternatives:
To reach such a small size, "ripped" versions usually delete all cinematics (cutscenes) , voice acting , and high-quality audio . You will likely be playing a silent, buggy version of the game with no story context. Assassin’s Creed Highly Compressed PC Game 450 ...
While the idea of a tiny download is tempting, a 450MB file for a game that should be 6GB to 9GB indicates that essential content has been removed or the file is malicious. Why you should avoid it: Most "Highly Compressed" claims for games this size