civ4
2kgames has a few nice screenshots and a summary of the features in the next release in the Civilization serious. I just wish they would hurry up and release it 
Civilization IV will come to life like never before in a beautifully detailed, living 3D world that will elevate the gameplay experience to a whole new level. Civilization IV has already been heralded as one of the top ten games of 2005, and a must-have for gamers around the globe!