If you’re a fan of Humble Bundles and Sid Meier’s games, you’ll want to pay attention to the newest HB offering. You can pay what you want for Civilization III: Complete, Civ IV: Complete, Ace Patrol, Ace Patrol: Pacific Skies, and Railroads!. Paying more than $5.36 gets you Civ V and its Gods and Kings DLC. If you pay $15 or more, you’ll get Civ V’s Brave New World DLC. If you’re just curious about the Civ series, then your best value is just paying what you want for the first tier, and then if you dig it, get the above the average tier as well.