A highly compressed ISO is not simply a zipped file. Standard ZIP compression on a PS2 game might save 20–25% space. A highly compressed version, however, uses advanced techniques to reduce file size by 70–80%.
Some sites legitimately split the ISO into .7z.001 , .7z.002 files. Download all parts, right-click, and extract. The final file will be ~1.5GB. dragon ball z sagas ps2 iso highly compressed
Here is the harsh reality. The PS2 version of Dragon Ball Z: Sagas is a DVD-ROM game. The original disc size is roughly (not as big as God of War, but still large). A highly compressed ISO is not simply a zipped file
This article covers everything you need: file sizes, compression methods, where to look (safely), emulation settings, and gameplay improvements. Some sites legitimately split the ISO into
Dragon Ball Z Sagas Sony PlayStation 2, 2005, Complete In Box Dragon Ball Z: Sagas for PlayStation 2 - GameFAQs