Pros: espionage, corporations, more leaders, units, and buildings, still balanced

Cons: leader trait reshuffling; for those who already bought warlords

The Bottom Line: This is a true expansion.

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Pros: New Technologies

Cons: Demanding of low-end Computers

The Bottom Line: If your a Civilization fan, I recommend you pick it up, being it's half a year old and only 30 bucks, pretty cheap for a game as excellent as this.

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Pros: Improved AI, more scenarios, new civilizations, and more options

Cons: Not a stand-alone sequel, tougher to beat

The Bottom Line: If you like Sid Meier's Civilization IV, you're going to love this second expansion by Take Two/Firaxis.

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