Professional "repackers" like FitGirl Repacks can sometimes compress games by up to 50% without losing quality.
An entirely new co-operative mode featuring 23 unique, objective-based missions that can be played solo or with a partner.
"Highly compressed" refers to files that have been significantly reduced in size using advanced algorithms to make them easier to download.
Call of Duty: Modern Warfare 2 (2009) Download Guide: Highly Compressed & Verified
Introduced customizable killstreaks (like the AC-130 and Tactical Nuke), secondary weapons such as machine pistols and shotguns, and the influential Perk system. Minimum System Requirements