The upcoming brawl, Avengers: Battle for Earth, between Earth's Mightiest Heroes and the Skrulls gets an official trailer during e3.
The motion-sensitive game for Kinect and Wii U features 20 playable heroes and villains, out of whom confirmed playable are Hulk, Iron Man, Captain America and Loki as playable while the rest have only been seen in the trailer. Add onto that a four move functionality that'll be triggered by your movement and Avengers: Battle for Earth could be the way you get ready for spandex by the next Comic Con.
The mystery stuff is still as questionable as Magneto is a mutant: no confirmed date, no price and no word on how you can actually play the game. But it will take place around the Secret Invasion mega-event from 2008 where a number of heroes turned out to be hidden Skrulls planning to take over the Earth. Hence why a lot of the game will be battling other heroes and villains as everyone tries to figure out if they are who they say they are.
There's an easy way to check for a skrull, though. Just ask if they love you. If they respond, "he loves you," and then becomes a spinning column of fire, you've got a skrull.