In the IGN uk website at the bottom in the news
Where it reads
Outside the game
These events spark frenzied activity as Ark Hunters and Raiders race to the crash sites in the hope of retrieving valuable alien technology.
To help capture some of the excitement of Arkfall events, IGN has teamed-up with Trion Worlds and Syfy to scatter three, unique Arkfall codes around this website, which will be unveiled for you to hunt down over the next two weeks, released on the 18th, 22nd and 28th of March. Find the codes and the treasures of the Arkfall could be yours.
Launching on 2 April, Defiance offers a unique, trans-media opportunity to experience the strong science-fiction narrative of a Syfy TV show, alongside Trion Worlds' online open-world third-person-shooter. As both develop, the game will reflect significant world-events depicted in the TV series, while the actions of players in Trion Worlds' game will inform plot points of future series' of Syfy's TV show.
Welcome to Defiance: a town, a world and an entertainment event like no other.
http://uk-microsites.ign.com/defiance/defiance.php