MS Explains Halo Viral CampaignMicrosoft has told Eurogamer that the Halo 3 viral marketing campaign is called "Iris", and has furnished us with more details. "Iris is a spiral campaign designed to take gamers on an incredible journey through the Halo Universe," a spokesperson for Microsoft told us. "Led by an unknown hand, users will discover bits of previously unknown information about the Halos, the Flood, the Forerunners, and the true origins behind the Halo trilogy." Advertisement Its designed to give us more information on how the great conflict all began, as we build up to the climactic conclusion of the series on 26th September. Bungie content chap Frank "Frankie" OConnor has written most of the material, with help from community manager Brian Jarrard and artist Aaron LeMay. The campaigns due to run for several weeks throughout the summer and is promised to be a compelling experience to uncover valuable information. Unfortunately Microsoft wont say whether there will be any other rewards for participating.