The demo for MM8BDM was released last week. In case you didn’t read about it before, MM8BDM is a mod of Skulltag (an engine that is a port of Doom I and II with additions and improvements).
The single player mode only includes a small level to train against AI bots. For help with multiplayer sessions, refer to this thread in CutStuff’s forums.
A little warning when starting for the first time. My computer became extremely slow the first time after I ran the game and while WinXP was asking me whether or not to block the program during MM8BDM’s online testing. I eventually got through it and exited the game. From then on, everything ran smoothly when I tried to start again.
(Source: Idealsoft Blog [Italian])