Full Version of Zombie Crisis, see description for additional information.
and run duke3d. Additional options (key layout, resolution) are available in the in-game options menu, or editable via
the duke3d.cfg file.
To install Zombie Crisis for the PSP, download StereoMike's DukeNukem3D PSP port and follow the installation instructions. Put the Zombie Crisis DUKE3D.GRP file in your directory. Finally, rename DUKE3DPSP.CFG to DUKE3D.CFG and you're good to go. The custom PSP *CFG file uses a different key layout which will make your PSP experience more enjoyable. Consult the in-game help menu (accessible via the main menu) for additional information.
StereoMike's DukeNukem3D PSP port download link: