[2] The studio's first work was in creating two additional multiplayer levels for the popular Xbox game Halo 2.

Certain Affinity worked closely with members of Bungie and Microsoft Game Studios during the development of these two maps.

[10][11] Certain Affinity also partnered with 343 Industries again for the development of Halo: Combat Evolved Anniversary, which was released exclusively for Xbox 360 on November 15, 2011.

[8] At RTX 2012, Certain Affinity announced that the studio was working with 343 Industries again on developing the Forge map-making tools for Halo 4.

Certain Affinity will continue to operate under its current leadership, including CEO Max Hoberman and President and COO Paul Sams.