No platforms announced yet. Metroidvania.
"Headlander is a a retro-futuristic, side scrolling, action-adventure game set in a world inspired by 70’s science fiction. It is a world of automation, a utopia gone wrong in which all of humanity have transferred their minds into robotic imposter bodies and are ruled by a deranged computer.IGN's got a few deets. Also, is it weird to anyone else that Adult Swim is a bona fide video game publisher, now? This is the second interesting thing I've seen with their stamp on it in like two days. S'like they're trying to be the next Devolver.
You are the last known human in the universe, and all that's left of you is a disembodied head. Seeking clues to your fractured past, you must travel through a hostile world of machines, using a special helmet that allows you to dock into and take control of any robotic host body. As you launch from one body to the next, you'll start to discover that things are not quite what they appear to be, and the fate of humanity has yet to be decided..."
Good luck with that.