Marvel MMO To Be Developed By Sigil on 1UP (thanks Mike Martinez and Xbox360.com) reports that Sigil Games, currently developing Vanguard: Saga of Heroes, is also the developer of the upcoming MMORPG based on the world of Marvel Comics. They don't mention the source of this information, and the only other light they can shed on this at the moment is the game will include PC and Xbox 360 gamers playing together in the same online universe.