Civilization, XCOM and more are well cheap in Firaxis Humble Bundle

Play some of the finest strategy and tactics games around for as little as one buckeroo.

The Firaxis Humble Bundle collects together a hodge podge of titles from the lauded strategy studio.

Pay what you want over $1 for XCOM: Enemy Unknown, Sid Meier's Pirates, Ace Patrol Bundle and Sid Meier's Civilization 3: Complete.

Beat the average ($8.40 at time of writing) to unlock Sid Meier's Civilization 4: The Complete Edition, Sid Meier's Civilization V, Sid Meier's Starships, the XCOM: Enemy Unknown - Elite Soldier Pack DLC and the XCOM: Enemy Unknown - Slingshot Pack DLC.

Fork over $15 or more and you'll also score Sid Meier's Civilization: Beyond Earth, the Sid Meier's Civilization: Beyond Earth - Exoplanets Map Pack and a voucher for 33% off the Sid Meier's Civilization: Beyond Earth - Rising Tide DLC.

All games are redeemed through Steam, with several Linux and Mac options available. As ever, you choose how proceeds are split between developer, organisers and charity, with benefits to Action Against Hunger.

Well? Go take advantage. It's a good chance to catch up on XCOM before the sequel hits next month.