Yeah, it does. That's strictly for kids with too much of an allowance and not enough sense.
The Civilization series (2,3, and now 4) are totally different. They're strategy map-based games. You try to successfully build a civilization from scratch, balancing out resources, technology advances, military prowess, etc. They're a blast, but VERY different from Diablo.
When I first started PC gaming (1993?) there were only a few worth playing. X-Com pretty much defined the small unit tactics genre, Civ 2 pretty much defined strategy-based gaming, and Doom (in '96 or so) pretty much defined FPS's. In '97 (I think) Diablo hit, and pretty much defined third person RPG's. I've played 'em all from time to time, and the Civ series is one I always come back to, along with D2 and a few others. I don't do many FPS's. Once they introduced the Z axis, they make me motion sick and queasy.