If you want a legitimate Call of Duty experience on your emulator, there is only one official option:
This is the first and only installment in the franchise made specifically for the PSP. It features three World War II campaigns (US, Canadian, and British) and is fully playable on the PPSSPP emulator with improved resolution and frame rates. Legitimate Ways to Play Modern Warfare 2 call of duty modern warfare 2 ppsspp file download
For those wanting the actual Modern Warfare 2 experience on the go or at home, use these official platforms: If you want a legitimate Call of Duty