What if there was a port for cube (http://downloads.sourceforge.net/cub...4&big_mirror=0)
an open source game on the psp?
There are tons of servers already online for the psp version and if ported to the psp and able to run the standard pc version maps then people could run their own servers play in infrastructure or ad hoc mode. And even make maps on their computer for use on the psp version! Not to mention playing between pc and psp!