The Tales of Asgard expansion for Marvel United gives players a new set of challenges and options for their games. Players can face off against a new villain, the trickster god Loki as he causes trouble around the six new Asgard Locations. However, aiding the heroes are a trio of new faces, including Thor, Valkyrie, and Korg. But there may be a Traitor among the group, as the new Traitor Challenge will add a new wrinkle to gameplay.