Civilization IV, one good alternative entertainment for chess players

Ah, aside from chess.com and playchess.com this turn based, empire-building strategy game nearly ruin my life. I must say that I grew up with Sid Meier's Civilization series. I rarely indulge myself with racing, shooting or RPG PC games. I'm strictly into turn based strategy games (sometimes real time). That's part of the discipline when carefully choosing a PC game. I haven't stopped playing Civ series since I got my hands on it when Civ 3 was first released in local market 7 years ago. There's nothing that satisfy me most than to drop powerful nuclear bombs on a small and hapless, but uncooperative nations or exterminating the unruly and defiant citizens of conquered rival nations. Anyways, it's just a game. But you'll be surprise with the similarities of the game with chess that's why I highly suggest Civ IV as an alternative entertainment (in contrast with RPG and shooting, racing etc) for serious chess players since the strategies and decision making are quite relevant with chess in many ways.