Downloading a ISO for God of War 3 (originally a PlayStation 3 exclusive) is a complex topic because the original game files are massive—roughly 35 GB to 40 GB due to high-quality textures and FMVs.
While there are many online posts claiming to offer GOW3 in extreme compression (e.g., 100MB to 1GB), these are often fraudulent or contain malware. Key Facts About God of War III File Size Original Size: God Of War 3 Highly Compressed Iso File Download