Here is the critical distinction. You cannot run a .zip file on a PS3. The console does not understand compressed archives.
For a highly compressed game to work, you must follow a specific workflow: ps3 games highly compressed work
So, do they work? The compressed archive doesn't work. The extracted content works exactly like a standard rip. Here is the critical distinction
The internet is littered with viruses disguised as GTA_V_ULTRA_COMPRESSED_500MB.exe. Never run executable files claiming to be games. Stick to these principles: So, do they work
Download all .7z.001, .7z.002 files. Use 7-Zip File Manager (Right-click → CRC SHA → Test archive).