(originally for Vita), or homebrew projects attempting to mimic the Uncharted style. Remote Play Setups

Uncharted 3: Drake’s Deception (PSP) is a legitimate port of the PS3 game, designed for handheld play. While it sacrifices technical polish and multiplayer features, it remains a nostalgic title for PSP enthusiasts. Legal access requires ownership of a digital or physical copy. Distributing unofficial ISOs of the game violates copyright laws, and users are advised to seek legitimate avenues for purchase or playback.

Would you like to know more about the Uncharted series or PSP games in general?

The short answer is: There is no official, playable, legitimate version of Uncharted 3 for the PSP. But the persistence of this search term—garnering thousands of monthly queries—tells a fascinating story about fan desire, emulation hype, and the dangerous world of fake ROM downloads.