Microsoft has begun promoting Halo 3 with a viral marketing campaign that promises to reveal more about the game's universe and backstory.
a spokesperson said that the campaign is titled 'Iris' and will run for several weeks.
"'Iris' is a spiral campaign designed to take gamers on an incredible journey through the Halo universe," he stated.
"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."
