Sid Meier's Civilization IV (PC Games, 2005)

When I first started playing Civ IV I was had a hard time adjusting to the way game concepts have changed from previous Civ games. After a few games I was able to get a hold on happiness, income / maintenance, and promotions. Once that happened it was very enjoyable. You should be fine if you don’t have or can get rid of your preconceived notions (great for new players). Beware that each difficulty setting is a big step up and that you may never be ready to play the hardest levels. Overall this is fun game that requires a lot of thought.