Have you seen the Lifeboat Survival Games Server?
The plugins are just not public.
Yes that is the only know plugin, He is keeping it to just his server for the time because all the work he has done on it. Since I beta tested that server I have acsess to very small portions of the code through PM, but would never use it or give it to any one.
Hopefully plugins will be possible with the upcoming updates.
Is it worth it to attempt to make a plugin similar to MCSG now for the benefit of half a month, or just withhold until 0.7.0?
Also (plugin "experts" or whatever), is it possible to host a server for each map, (Ex. A server for just SG1, another server for just SG2) or will it have to come down to players voting, which means another question: Can the server just then take a "backed up" map that got the most votes for and have it replace the "lobby" and spawn the max. 24 people or min. 8 on their pedestals? Or will it have to restart after voting, and have the temporarily white listed people (if full, only the specific 24 can join, otherwise more could join) join the server after restart for the games?
Don't even know if you will understand the questions lol...