Marvel Heroes is a free-to-play MMORPG created by Diablo legend David Brevik and written by Marvel scribe Brian Michael Bendis. It promises to "combines core elements of Diablo with the expansive library of heroes from the Marvel Universe, including all your favourite Avengers."
There's going to be an impressive roster of heroes, including Iron Man, Thor, Black Widow, Captain America, Wolverine and Hulk, with each fully customisable. The plot has heroes battling through the Marvel universe, with the ultimate goal defeating Doctor Doom and stop him from using the Cosmic Cube to destroy the world.