Downloading "highly compressed" games from unofficial sites carries several dangers:
(long-range redundancy eliminator) scan for identical blocks of data and replace duplicates with tiny pointers. Content Stripping
, while "repacks" use advanced compression to shrink that initial download significantly
You can search for "Call of Duty: Modern Warfare 2 PC download highly compressed repack" on various torrent or file-sharing websites. However, I must remind you to be cautious and consider the following: