Compression has physical limits. For a game as large as GTA 4, even the most extreme community-made "repacks" can only reduce the size so far: Realistic Compression : Reputable compression sites like FitGirl Repacks DODI Repacks usually reduce the game to around 8GB to 13GB Extreme Cases
Before you attempt to install the highly compressed version, ensure your PC meets the basic requirements to handle the Liberty City environment. Operating System: Windows 7, 8, 10, or 11. Free Download Gta 4 Highly Compressed Setup In 10 Mb