– you actually want the PC fan game or you misremembered the platform. Save yourself the hassle: download the fan tribute game directly from aottg.com or Itch.io and enjoy the real 3DMG experience.
There is no official "Attack on Titan" game released for the Sony PSP. The game people play via PPSSPP is a homebrew (unofficial fan game) . The official AoT games ( Attack on Titan: Wings of Freedom and AoT 2 ) are for PS4, PS Vita, Switch, and PC. ppsspp attack on titan game download