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Overview

Certain Affinity's first product was the Halo 2 Blastacular Map Pack released for the Xbox in 2007. They have worked on the Xbox 360 version of Left 4 Dead for Valve. Certain Affinity also has a downloadable action-strategy game available for Xbox Live Marketplace, Playstation Network, and Windows titled Age of Booty. In 2011, Certain Affinity produced the Defiant Map Pack for Halo: Reach in conjunction with 343 Industries. They made the Xbox Live Arcade game Crimson Alliance, which was released in the summer of 2011. Certain Affinity most recently co-developed Halo 4's Forge mode and War Games.

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