Underated Gems presents, 2009's MotorStorm Arctic Edge for the PSP and PS2... Generally identical apart from the PSP version being able play online and having a photo mode which is kinda weird
MotorStorm: Arctic Edge PSP – Games A Plunder
PSP Review: Motorstorm Arctic Edge - Video Games Reloaded : Video Games Reloaded
Motorstorm: Arctic Edge - Essentials | PlayStation Portable PSP New (4) 711719154297 | eBay
MotorStorm: Arctic Edge Sony PlayStation PSP Asia English Complete CIB Clean 711719874324 | eBay