A Server is something that tremulous players go on to play. all internet servers run on a QVM and are each different, some with even modified .pk3 files for max awesomness. some mods are:
X: everything is a lot different, blasters do 500 damage, granger 1hitkill anything, grenades nuke the map and E.T.C. this server does not have any new models or graphic changes.
Z: aliens are replaced with zombies, and humans must compete against them to reach their goal.
Ubp: over 999 building points for each team.
||||||Instagib: HvH freefor all. each player starts off with a MassDriver, and gets rewarded for killing sprees, like thepower-up acidMD, Lightninglide and ahmed's terrorist pack.