Sins Forums
I was looking thourgh the forums today, and i noticed a quite a vary forum games. So, if you have seen and/or used a forum game, post it below. Eventually i will make a post that just lists forum games 
Here's mine, You're Banned!, which started it all: https://forums.galciv2.com/344924
Thank you for the Karma. Here are a few more:
Avatar Fight!: https://forums.galciv2.com/358294
Corrupt a Wish: https://forums.galciv2.com/356457
Pick a Side: https://forums.galciv2.com/356457
1-1000 Number Game: https://forums.galciv2.com/336450 This actually came before mine, but mine kind of kicked off a game craze.
There are many more, will have to keep looking.
Here's a couple more:
Keep a word/Drop a word - https://forums.stardock.com/331978
Good Idea/Bad Idea - https://forums.stardock.com/357525
The Survivor Forum Game: http://forums.demigodthegame.com/357921
Welcome Guest! Please take the time to register with us.
GalCiv2 Forums
Stardock Forums
Demigod Forums