Old Games for PDAs?

Stin Tankin writes "I was looking for games for my PDA when I came across an empire clone for PDAs called Pocket War. I used to love empire. I also have Mame CE for my Pocket PC which provides a ton of old arcade games. These old games run great because they were made for slow low resolution devices. Does anyone know where I can find more of these old games? I'm really looking for something like Nethack for a Pocket PC or Sharp Zaurus."