Just a small note: I've updated Duke 3D (2 player over BT, faked MP against bots, Treo vibrator support), ZHexen (2 player over BT, Treo vibrator support) and ZHeretic (2 player over BT, Treo vibrator support) on my site: http://www.metaviewsoft.de
All games support the Treo keyboard. You will need the original game files or the demo files.

Regards
Henk