PPSSPP itself is legal (Sony has not sued the developers). However, using it to play downloaded, non-owned ROMs is not legal in most jurisdictions. The U.S. Sony Computer Entertainment America, Inc. v. Bleem, LLC (2000) established that emulators are legal, but the ROMs remain copyrighted.
If a user finds a file online claiming to be "GTA San Andreas Definitive Edition PPSSPP," they are almost certainly looking at a heavily modified version of the original Grand Theft Auto: Vice City Stories or a fan-made ISO mod of the original San Andreas PC port stripped down for mobile. Gta San Andreas Definitive Edition Ppsspp Download Mediafire
For comparison, the legitimate on Android/iOS includes: PPSSPP itself is legal (Sony has not sued the developers)
However, the modding community is vast. What you will typically find labeled as "GTA San Andreas Definitive Edition PPSSPP" is actually a of the original GTA: San Andreas or GTA: Vice City Stories PSP ISO. Modders replace textures, update character models, and tweak the environment to mimic the look and feel of the newer Definitive Edition. Sony Computer Entertainment America, Inc
Official versions of were never released for the PlayStation Portable (PSP) and, by extension, do not exist as native files for the PPSSPP emulator . While "Definitive Edition" downloads on Mediafire often appear in search results, these are typically fan-made mods of other GTA titles like Liberty City Stories or Vice City Stories designed to look like San Andreas . The Truth About GTA San Andreas on PPSSPP