PaRappa the Rapper (USA) ISO < PSP ISOs

Parappa the Rapper is a hip-hop themed rhythm game for the Playstation and PSP starring a rapping dog and his adventures to impress his secret crush.

Punch, Duck, portable Punch. PaRappa the Rapper returns - Siliconera

Rock Band Unplugged (USA) ISO < PSP ISOs

Parappa the Rapper [NTSC-U] ISO < PSX ISOs

PaRappa The Rapper (Europe) PSP ISO - CDRomance

It looks like PS4 Parappa Remastered is the PSP game running under