Most "GOW 4 for Android" videos actually show the Ghost of Sparta game with a "Kratos Skin" mod or different textures to make it look like the 2018 Norse version. PPSSPP Setup & Optimization
While you cannot play the 2018 "God of War 4" on PPSSPP, you can play the two official PSP titles, which are widely considered masterpieces for the platform: God of War: Chains of Olympus : A prequel set 10 years before the original game. God of War: Ghost of Sparta