While you will never find an official Naruto Shippuden: Ultimate Ninja Storm 3 ISO for the PPSSPP emulator, the desire for it has sparked creativity in the modding community. For the authentic experience, streaming is king. For a fantastic, native handheld experience that you can download and play right now via PPSSPP, Naruto Shippuden: Ultimate Ninja Impact is the gold standard.
Now, go unleash the Nine-Tails.