God of War (2005) was originally a PS2 title, mobile players typically use the PPSSPP emulator to play the two dedicated PSP entries: Chains of Olympus Ghost of Sparta
If you truly want the original God of War (2005) experience on Android, consider AetherSX2 (PS2 emulator) – but that requires a very powerful phone and a legally obtained PS2 BIOS/game dump. android 1 roms com god of war 1 ppsspp zip file
Even with the right zip file, you might encounter slowdowns in busy scenes (like the Persian King battle). Here are God-of-War-specific fixes: God of War (2005) was originally a PS2