As if spectacular skirmishes between some of DC's biggest superheroes and villains weren't enough, the launch trailer for Injustice 2 drives a world-in-peril storyline through the franchise's central conceit.
After Batman and Superman did battle in 2013's Injustice: Gods Among Us, a multi-universe effort to topple a tyrannical version of the Man of Steel, there's a new threat on earth's horizon.
