I have been playing civ games for almost twenty years now.
I have worked in the games industry for over ten years.
Civ is probably my favorite game.
For whatever reason, this game is not finished and is a waste of your money.
What will be fixed in the inevitable patch:
-terrible, constant crashes and graphics glitches.
-awful balancing and AI issues; it feels like a beta version.
What probably will never be fixed:
-the depth of a civ game is completely missing. Not sure I it can be patched back in. The combat system is awesome, but nothing else in the game is worth doing. Every building and wonder and government choice has been turned into a stat modifier. City states are an interesting idea, but once again, just another stat modifier. The wealth of unique choices that have been traditionally scattered throughout a civ game's centuries have all been removed. Civ IV was fantastic and mesmerizing in its complexity, and Civ Rev was spectacular in it's simplicity. Civ V tries to capture both and achieves neither.
Ironically, the game feels closest to Call to Power, the bastardized Activision version, which had none of the magic.
Civ III was wobbly on release, because it introduced some new concepts which weren't truly realized until Civ IV. But it was still playable. This is not, unfortunately.
Sorry, guys. I'm gonna give it another couple days, but the longer I play the more I just want to play Civ IV, which I'll probably reinstall.