Simon & Schuster

Gallery Books is an imprint of publishing company Simon & Schuster which publishes a wide variety of fiction and non-fiction books. In February of 2014, 343 Industries announced that they had entered into a multi-year co-publishing program with Gallery Books. The Halo novels previously had been published by Del Rey and Tor.

Halo
Gallery Books was contracted to publish Halo books following the last novel of Kilo-Five Trilogy, Halo: Mortal Dictata, which was published by Tor Books. The first Halo book to be published by Gallery Books is Halo: Broken Circle, by John Shirley, which was released on November 4, 2014.