The most beautiful and graphically rich Civ ever is the most boring and tiresome to play. So many features have been removed or dumbed down from the late, great Civ IV it's hard to know where to start. Gone are religions, espionage, tech trading, stacking, city defenses, spending sliders, and more. The unique powers of leaders and wonders have been watered down. New are all manner of boring and annoying features like AI-governed mini-civs called city-states, buying tiles to expand city zones and hexagon-shaped tiles.
Back to Civ IV.
Never before has a date in history been so significant to so many cultures, so many religions, scientists, and governments. 2012 is an epic adventure about a global cataclysm that brings an end to the world and tells of the heroic struggle of the survivors.