Metaview has just released a new version of his port of Duke 3D for the Tapwave Zodiac, heres some info :
Features:
Version 1.9
supports different resolutions (on Zodiac also with HW-scaling)
needs Palm OS 5.x (an ARM processor), 4 MB DBCache or storage memory and around 7MB of dynamic memory
adjustable button layout
sound and music (needs timidity)
WAVE file support (used in some TCs)
cheats work: press one of the two on-screen buttons in the middle to open the console
Stylus-controlled view (enable in "Ctrls": Stylus (-) or Stylus (+))
Treo keyboard support (still needs UDMH to run)
Last Update:
Treo keyboard support (number keys are mapped to weapons)
stylus-controlled view
music is broken, will crash your device, will be fixed later