To clarify, Tekken Tag Tournament 2 (TTT2) was never officially released for the PlayStation Portable (PSP)
When you search for "Tekken Tag Tournament 2 PPSSPP," you will often find one of two things on ROM sites: tekken tag tournament 2 ppsspp isoroms new
Download the modded Tekken Tag 2 ISO file from a trusted community source like PPSSPPISOROMS. To clarify, Tekken Tag Tournament 2 (TTT2) was