Technically, because the game was built specifically for touch-screen mobile devices. However, there are two workarounds often discussed in the community:
To play any Temple Run clones or similar runner ISOs, your PSP must be running Custom Firmware (CFW). Follow these steps to set it up: temple run iso games for psp
: Some developers have created "clones" or unofficial versions of Temple Run for the PSP. These are typically distributed as EBOOT files or small ISOs that require Custom Firmware (CFW) to run. Technically, because the game was built specifically for