Image provided by: PSP3d.comPercival released a game for PSPs with firmware 2.01, 2.5 and 2.6.

This new 2.01/2.5/2.6-only game is called Penguin Scramble. The object of the game is to keep the penguin going through the ‘caves’ without touching any walls. Highly addictive, I found myself playing this game for over 30 minutes trying to beat my high scores!