With all mandatory assets and audio, the smallest playable dump for RPCS3 is around 18 GB (after stripping non-English videos). Anything smaller than 10 GB is almost certainly fake or broken.
If you download a file claiming to be God of War 3 that is smaller than a few gigabytes, it is fake. God Of War 3 Highly Compressed Iso File Download
To download the highly compressed ISO file of God of War 3, follow these steps: With all mandatory assets and audio, the smallest