Here's the official description from Amazon:
LEGO Batman 2: DC Super Heroes is an Action-Adventure game set within the Batman universe, and filled with LEGO versions of heroes and villains from the Batman comic series, working together/against those from the Justice League comic series. The game is a standalone follow-up to 2008's Lego Batman, and features a wealth of heroes and villains, an engrossing storyline, in-game dialog, classic LEGO video game play that includes a co-op support, family-friendly action and in-game gadgets, vehicles and super hero abilities.A recent press release revealed that the touchscreen can be used as an interactive map, and also allows players to select their characters. In addition, Off-TV Play has been confirmed, meaning gamers can play entirely on the GamePad if they wish.
Lego Batman 2: DC Super Heroes - Amazon
Lego Batman 2: DC Super Heroes - GameStop
Lego Batman 2: DC Super Heroes - Best Buy