Emulation itself is legal. Downloading copyrighted ISOs from unauthorized sources is not. Here are your legal pathways:

was never released for the PSP. It’s a PS3 exclusive title (2013). The PPSSPP emulator only runs PSP games, so no PSP ISO of Ascension exists.

Let’s address the elephant in the room. God of War: Ascension is a PlayStation 3 exclusive. It was never ported to the PlayStation Portable. Consequently, no PPSSPP-compatible ISO file exists for Ascension , regardless of what shady websites claim. Downloading files labeled as such will likely result in:

Before proceeding, I must emphasize that downloading ROMs or ISO files of games without owning the physical copy or having the necessary permissions may infringe on copyright laws. Always ensure you have the right to access and play the game.