A "full rip" of this size is a version of the game that has been drastically modified to fit into a tiny package. For context, the standard Grand Theft Auto IV installation 16 GB to 18 GB of hard disk space. Bajaj Finserv To achieve a 700MB size, modders typically: Remove Content
Rockstar Games' 2008 masterpiece. At launch, the PC version required a massive (for the time) 16GB to 18GB of hard drive space.
The installation files are split into standard CD-sized volumes (approximately 700MB each). This makes it incredibly easy to download sequentially without risking a corrupted multi-gigabyte single file.
Decompressing a 700MB file back into 6GB–20GB of data can take longer than simply downloading the full game on a modern connection.