The much anticipated (at least by me) expansion pack to Rise of Nations has officially been released (like a week ago).
It includes:
--6 new nations: Persians, Americans, Lakota, Iriqouis(spelling?) Dutch, and Indians.
--4 Brand new non-linear campaigns: Cold War, New World, Alexander the Great, Napoleon.
--New Government Feature
--More than 20 new units.
--3 new Wonders.
Download the trial version (Original RON not needed for trial)
http://www.microsoft.com/games/thron.../downloads.asp