Please be aware that downloading ROMs for games you don't own may infringe on copyright laws. This response aims to provide guidance on using PPSSPP, and it's up to you to ensure you're complying with relevant laws and regulations.

If you specifically want to use the PPSSPP emulator, you can download and play these other Ben 10 titles that were officially released for the PSP: Ben 10: Protector of Earth Ben 10: Alien Force Ben 10: Vilgax Attacks Ben 10: Ultimate Alien: Cosmic Destruction Important Note on Downloads