There are 2 expansions - The War Chiefs and The Asian Dynasties.
Some units have stealth - an ability to go undetectable to most units - Explorers and TC's make the stealth unit visible.
The Aztecs/Iroquois/Sioux all have a firepit. Its a new building where you have your villies dance for certain bonuses. Bring back a dead explorer, give more attack, speed up production plus other things.
The Chinese have a very primitive flamethrower as siege weapon - created from their castles.
Veni, Vidi, Vici
Trample the Weak - Hurdle the Dead!
"It's kind of a...persnickety magic." Atzy
End of Nations!
End of Nations Community Manager