This is a codec issue. In Graphics Settings , set "Backend" to OpenGL (not Vulkan). Save and restart.
You cannot load a .zip file directly into PPSSPP (usually). Attack On Titan 2 PPSSPP ISO Zip File Download
An official game titled was never released for the PlayStation Portable (PSP). Consequently, an official ISO or ZIP file for this specific title does not exist for the PPSSPP emulator . This is a codec issue
(Android) to extract the contents. The emulator requires the file to run the game Set Up PPSSPP Download the free PPSSPP Emulator Google Play Store or official site Move your extracted file to a dedicated folder, such as on your device such as on your device