Here's a link to the campaign wiki for the Marvel Super Heroes game that our GM has put together for the game. He assembled it our the last few weeks, and he's got quite a lot of good stuff there including some incredible artwork he's assembled from across the interwebs. We're playing the children of various heroes who've belonged to the Avengers of this alternate Marvel Earth. For example my character, Archon, is the child of Captain Marvel (Mar-Vell) and Ms. Marvel.
We ran our first session of the game on Friday and it was a total blast. Tempest, the son of Thor and another one of our PCs, got a grandslam and knocked Ultron a whole city block. I figured out how to get Avengers Mansion's defenses back online by smashing a gizmo in one of Ultron's vehicles. The system did a great job of giving the feel of a Marvel comic book. We've added a couple of tweaks to the combat system, but we're mostly playing it by the book.
The link for the wiki is HERE.