PC games, or some sort of version of them, are heading towards phones. The iPhone would be nice with a huge screen and touch control.
"Sid Meier's Civilization IV Mobile, Sid Meier's Railroad Tycoon Mobile and Sid Meier's Pirates! Mobile are scheduled for release in 2008."
http://www.tmcnet.com/usubmit/2007/05/22/2642466.htm
Civilization IV, Beyond the Sword second expansion will be released in July 2007.
http://www.civilization.com/