The 42-player, AI-only Civilization game that's currently going down is already one of the most amazing things the Civilization community -- no slouches when it comes to weird and wonderful spins on the game -- has come up with. In over 20 years playing the series I have never seen anything like this.
Mostly because I've never had a PC that could come close to running such a massive game. 42 Civs, an enormous map, wars constantly being fought, units literally covering the screen... the strain must be enormous.
But it's worth it. User tpang (the organiser of the war/event) has been documenting the great war, and this has proven to be the best way to keep up to date on what's going on. His galleries, complete with commentary, have been breaking down the major shifts and turns in the conflict, as well as providing images that show the sheer scale of the game.
I mean, just look at this. And they're still using bowmen and spears. God help them when the tanks start rolling.
To give you a big-picture idea of how things have been shaping up, Vulpes-Vulpes-Fox made this map that showed how things were going as of two days ago.
If you want to watch the battle unfold, learn a little more about it or even donate to help out, there's more info here.