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 Sony PlayStation PSP Asia English Complete CIB Clean 711719874324 | eBay
MotorStorm - Arctic Edge ROM - PSP Download - Emulator Games
MotorStorm Arctic Edge offering pre-order bonus car | Pocket Gamer
MotorStorm: Arctic Edge (PSP) review | PlayStation Portable
Motor Storm Artic Edge PSP Game For Sale | DKOldies