Before a single shot has been filmed and with almost two years until the actual film is set to hit theaters on May 27, 2016, X-MEN: APOCALYPSE has already launched their viral campaign.
Two sites have been launched to start getting people interested in the film. The first, http://tandeminitiative.com/ appears to be a site that is searching out and rewarding those with “special abilities.” Meanwhile, http://m-underground.com/ is a site dedicated to exposing those who would try to create a rift between humans and mutants.
You can register at each site and check out plenty of content that both already have, highlighting their own causes. My guess is that The Tandem Initiative will be what Apocalypse uses to recruit his horsemen while M-underground is a site run by the X-Men.
Here’s the first video released on Youtube by M-Underground: