http://www.gamespot.com/pc/strategy/civilizationiv/review.html
The Good
Intriguing new gameplay options plus even more-refined core gameplay; Great presentation with powerful new 3D engine and great new soundtrack; Much easier to fit into your schedule, but also offers many more strategic options; Leonard Nimoy; Warning: The highly addictive gameplay will make you lose sleep;
The Bad
Endgames can sometimes still bog down, even though games are much faster to finish overall; Faster pace seems to de-emphasize historical context somewhat; Warning: The highly addictive gameplay will make you lose sleep;
9.4 - GOTY.
The Good
Intriguing new gameplay options plus even more-refined core gameplay; Great presentation with powerful new 3D engine and great new soundtrack; Much easier to fit into your schedule, but also offers many more strategic options; Leonard Nimoy; Warning: The highly addictive gameplay will make you lose sleep;
The Bad
Endgames can sometimes still bog down, even though games are much faster to finish overall; Faster pace seems to de-emphasize historical context somewhat; Warning: The highly addictive gameplay will make you lose sleep;
9.4 - GOTY.