jsharrad has released a rather nice retro game for the PSP, heres the info:
Started working on a clone of an old dos game called MinerVGA, released as public domain in like 1988. Haven't got much at the moment, below is a screenshot and a very alpha test eboot where you can control the miner, clear the ore (they spawn in same spot every game atm) and walk pretty much anywhere on the screen, even through the road. :P