Space Empires V: This is one of those underground strategy games that you can play for years. The premise is simple: Over a number of turns you expand your empire from a single planet to a galactic empire. Develop new technologies, engage the AI in diplomacy and try to rule the universe ($40).

Flight Simulator X: Microsoft's latest incarnation of Flight Simulator ($40-$47) is visually astonishing. If you're into flying planes sans bullets and missiles, this is a great bet.

Sid Meier's Civilization IV: An ultra-addictive strategic blend of empire- and world-building, Civ IV ($45-$50) isn't just one of the best games of the year; it's one of the best games of all time. If you like your gaming to entail deep strategic thinking, this is for you. And if you already have Civ IV, make sure to check out the recently released Warlords add-on.

-- George Jones

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