Yes, real highly compressed repacks exist (from trusted groups like FitGirl, BlackBox, or CorePack). However, even the smallest functional repack of GTA IV is still around after extreme compression. Installation then requires 15–20 GB of free space.

If you want to play GTA 4, you must download the official version.

It sounds perfect. You save data. You save time. But is it actually possible to compress a massive 15,000 MB game into a tiny 10 MB file?

Drop your game resolution to 1280x720 (720p).

Keep view distance and detail distance sliders below 25.

Technically, you cannot compress 15 GB down to 10 MB. If you see a file labeled “GTA 4 setup 10 MB.exe” , it is almost certainly one of three things: