As the Maya, nuke a city in the year 2012.
Requirements[]
Gods and Kings
Notes[]
The Mayan Civ uses the Mayan long count calendar, so 2012 is 12.19.19.0.6 (January 2, 2012) in a standard paced game. This should be turn 432. (Thanks to Browd)
Apocalypse Now
Here is a picture of the achievement being earned :
On quick speed, 2012 is turn 292.
On epic speed, 2012 is turns 674 and 675.
On marathon speed, 2012 is any of turns 1244-1247.