Though I do not want to register I'll post an idea here.
As not all great turn users visit forum, I think it would be good idea to have some info bos on main/home page of great turn containing someting like:
"running games with open spots" or "open spots in running games", could also include civil war split nations.
May there is no need to list all the available slots, maybe small button near "home|forum|greatturn|android|chat" would suffice i.e. "open spots: 3" with link to forum thread or whatever explaning current situation. Also same or other buttno could be there: "games open for registration: 2", well maybe it can be said in shorter way