If you need server files, at this place
you might find lots of them plus suggestions for a server.
I would check out your server, if you would ran anything beside WoW.
Doom/Hexen sourceport with lots of game types, like:
FFA: free for all, messy
CTF: hard, since players run really fast
Invasion: enemies spawn in increasingly strong "waves",
while players will get access to more weapons
Coop: team-based playthrough
Buckshot: Supershot gun only
Currently i dont have many ideas either.