Young Justice: Legacy is a pretty nice looking action/RPG hybrid that was shown at E3, The game takes place between the first and second seasons, and features 12 playable characters including members of the initial lineup and newcomers like Beast Boy. As you'll see in this video from Comics Alliance, in addition to involved gameplay there is definitely a story being told here, concurrent with and integral to the Young Justice TV series. YJ creators Greg Weisman and Brandon Vletti have taken an active role in game development along with publisher Little Orbit, and it looks as if together they've got a very cool superhero action game in the works.