Microsoft has told Eurogamer that the Halo 3 viral marketing campaign we talked about earlier 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."
It's 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" O'Connor has written most of the material, with help from community manager Brian Jarrard and artist Aaron LeMay.
The campaign's due to run for several weeks throughout the summer and is promised to be a compelling experience to uncover valuable information. Unfortunately Microsoft won't say whether there will be any other rewards for participating.
Head over to the Halo 3 website for more information. Or head down to our comments section to discuss whether it's still "viral" if we all know what it is.