Sid Meier and Firaxis the famous developer behind the classic Civilization series have put up several of the games on humble bundle website to sell to help charities.
For those unfamiliar the humble bundle is a website that offers video games at a discounted rate. The money you pay, which can be any amount including $0.01, goes to various charities and can also go towards the developer themselves. You choose where the money goes.
In this game bundle which would normally go for upwards of $144 you get Civilization III, Civilization IV Complete, Ace Patrol plus the DLC Pacific Skies, and Sid Meier’s Railroads. If you beat the average donation currently at $5.13 you also get Civilization V and its DLC Gods and Kings. If you donate $15 total you will also get the Civilization V DLC Brave New World.
The sale will be on for the next 13 days, from February 4 2014 to February 17 2014, on the humble bundle website.