The developer behind the Arkham series switches sides, as Rocksteady Studios gets behind Task Force X for this long-awaited action-adventure. Superman, Green Lantern and Flash have been brainwashed by supervillain Brainiac, and it’s up to a quartet of DC’s biggest misfits (Captain Boomerang, Harley Quinn, Deadshot and King Shark) to take them down. The tone, happily, is more Gunn than Ayer: if the co-operative combat lives up to Rocksteady’s previous work, this could be a superhero showdown for the ages.