http://www.greenmangaming.com/games/strategy/sid-meiers-civilization-v/
£5.99 here in Blighty, don't know what that'll work out as for those of you across the pond. It's a Steam copy, and about half what Steam themselves were selling it for a few weeks ago.
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"I'm Commander Shepard, and you're standing in the biggest library in Citadel Space. Look me up."