You can the game directly to your PC through Sony's PlayStation Plus Premium service.
: There is no official PC port for God of War 3. Anyone claiming to have a "PC setup.exe" for this specific game is likely trying to compromise your computer. How to Actually Play God of War 3 on PC
: These are often names used by unofficial "repack" sites. Use extreme caution—it is always safer to use official streaming services or dump your own legally owned discs. If you'd like, I can help you: Troubleshoot RPCS3 settings to get better FPS.