A legitimate highly compressed game usually comes in .rar , .zip , or .7z formats. If the download link leads to an .exe file directly without an installer, be very suspicious—it could be a virus.
Before you hit the download button, it is important to understand what you are getting. When a game is "highly compressed," it essentially means that the original game files have been shrunk using advanced compression algorithms (like 7Zip, WinRAR, or proprietary installers). download gta iv highly compressed for pc