This is a port of Duke Nukem 3D, based on the GP2x port. The homepage of the NDS port is

Notes from GPF:
dldi patch .nds and copy it and defs.con, game.con, user.con, duke3d.grp and supplied duke3d.cfg to /duke3d directory of card. might be case sensitive with Uppercase. It still needs sound added and network support, but is playable with your own provided shareware .grp or full version .grp file.,3934.0.html