So yeah. Found this on STEAM forums just yesterday.
http://forums.steampowered.com/forums/s … p?t=838166Robofire wrote:
I'm not sure if the majority of people know this on these forums but I browse pretty regularly and haven't seen it here yet, so I guess I'll post it myself.
Someone on my friends list showed me this, I didn't find it. Basically it allows players on any server to vote to change the versus game to death toll or dead air (or no mercy or blood harvest, but that can be done anyway). In console, any player can type "callvote changemission smalltown" to call a vote to change the map to Death Toll, and "callvote changemission airport" for Dead Air. If the vote passes, the map will change to a versus game at the requested map. Some infected ladders do not show up but can still be climbed, so just look around for pipes and things. The finale will only play once, and then credits will roll. Also at the end of each round the difficulty multiplier is always x1.00.
This is cool because you don't need to download any maps or plugins and the vote can be called by any player, not just put in by a server admin.