Look out Humble Bundle fans! The most recent offerings revolve around many Sid Meier titles, including some of the popular Civilization series. You choose how much to pay, where your money will be donated to, and what kind of game content you'll have access to.
Fans of the Civilization series (who haven't already purchased everything out there) will be happy to hear that the latest Humble Bundle sale involves many things Civilization; games, DLC, you name it. Co-Optimus wanted to point out the amount of Civilization V content available in particular, as it had some decent co-op related gameplay within it (up to three players working together against AI opponents).
There are multiple Sid Meier titles to choose from and purchase at any amount you desired, but to buy the Civilization V content, you'll have to put up $7.80 minimum. This will grant you access to the actual game, as well as the DLC, "Gods and Kings". Upping your donation to $15 will get you the "Brave New World" DLC and round out the Civilization V items. Either way, all the money you spend here will go to the charity of your choosing, divided up any way desired.
The sale will be going on for about 2 more weeks , with all items being featured on Steam, and some with Mac versions available.
Source: Humblebundle.com