While the original Temple Run game (iOS, 2011) had a minimal plot ("escape from an ancient temple while being chased"), the (2013) added jungle-themed elements and faster gameplay mechanics. Here's an engaging story concept to enrich the game's lore:
labeled "Temple Run for PSP," it is likely a fan-made "homebrew" port or a clone created to run on PSP custom firmware (CFW). Key Features of "Temple Run" on PSP (Homebrew/Port) temple run for psp versionrar link