Quoted from Cutstuff.net: 
Surprise! Yes, it didn’t take long before people wanted to take the SGC demo home and play it over the internet. Instead of being all exclusive, I decided to just let it go and release the damn thing for people to download and play with their friends. So ladies and gents, get your Mega Busters ready for deathmatch!
The Demo is 28MB includes 4 maps, 5 skins and over 10 different weapons to try out. Try it in singleplayer first to set up controls, settings and get some practice in! When you’re done, let us know
what you think on the forums or
drop me a line! Download from bananachan.net Download from wadhost.fathaxNote that this is no ordinary Doom mod. Included is a MM8BDM IWAD, PK3, launcher and beta version of Skulltag. The idea is for it to be as user friendly as possible, as it was for a originally for use over LAN. If you’re stuck, visit this post on the forum for more details on joining and setting up your own server.
More Information on MM8BDMLearn how to set up and host servers