A Freeciv game with 2.5 native client. Starting in about one month.
http://longturn.org/game/LT42/
This one is for playing with lots of people with 23h turns and with a very different ruleset. You can find more info about the ruleset here:
http://forum.freeciv.org/f/viewtopic.php?f=11&t=75385
New players may need to confirm participation with email, forum posts or with discord. This is to avoid idlers and looks like similar method worked well for LT45.