Instead of searching for "Ragnarok," look for these two titles. They are canon to the story and run perfectly on PPSSPP:
The user is likely looking for a ROM of "God of War: Betrayal" on PPSSPP, which is a real game. But they mentioned "Ragnarok," which isn't available for PSP. Need to clarify that. If they're after the main God of War series, it's not compatible with PPSSPP. god of war ragnarok ppsspp highly compressed best link
If you want the Ragnarök vibe (Norse setting, axe combat, open-ish levels) on PPSSPP, here’s the hard truth: The PSP’s library lacks any Norse-themed God of War. Instead of searching for "Ragnarok," look for these