The only official Call of Duty game ever released for the PSP was Call of Duty: Roads to Victory , which launched in 2007. Available Options for PPSSPP
Most users skip this and download the pre-patched ISO. I am informing you of the risk, but I cannot provide the direct link here due to DMCA regulations.
: Replacement of base game guns with the ACR, UMP45, and Intervention, often featuring custom reload animations.
If you
However, it is a full substitute for the real MW2 . There is no campaign, no online multiplayer against real players (unless you use Parsec or Steam Link), and occasional sound bugs.
However, the community has created for Roads to Victory that change textures, weapons, and menus to look like MW2. Guide to Playing "MW2" on PPSSPP