In RPCS3, go to File > Add Games and select the folder containing the extracted files. God of War 3 for Android (APS3E / RPCSX) This is how you play God of War 3 on PC - RPCS3 Guide
Some "repack" versions might bring the download size down to approximately 15 GB – 20 GB while maintaining full assets. God Of War 3 Iso File Download Highly Compressed For
The official size of God of War 3 on the PS3 is approximately . Highly compressed versions available online typically aim to reduce this size significantly for easier downloading. Original PS3 ISO: ~34 GB to 40 GB. In RPCS3, go to File > Add Games