Players pursuing an S+ rank on "Professional" difficulty must manage limited saves (max 15) and master enemy AI randomness. 3. Mobile Emulation & Performance
Assuming you have legally obtained your ROM file (either via self-dump or via the 24-hour "time-shifting" laws where applicable), here is the definitive way to play it in 2025. RESIDENT EVIL 4 ROM
If you're playing on an emulator, you can usually save your progress using the emulator's built-in save feature. Make sure to check your emulator's documentation for instructions on how to save your game. Players pursuing an S+ rank on "Professional" difficulty