Qonquer by Warren Marshall is a Quake 1 Survival, i tested it on the PSP and PC and its awesome :D
You need registered Quake to run it, read instructions on Dat website.
But i can make a special PSP build if you want with customized menu and all that supershit.
This is a MUST have if you like NZP and No Bugs Allowed xD
http://www.wantonhubris.com/qonquer/Qonquer.html