It’s a card game (but not a trading card game, you get all the decks you need to play in the box) where superheroes team up against super villains. There are multiple decks. Four heroes each with a deck battle the Villain who also has a deck. The Villain is not a player, it just plays cards one at a time. There is also an Environment deck that complicates things.
I just learned about it the other day and bought the Steam version (there is also a physical board game version) and I am enjoying it. Very Comic booky in tone and I enjoy the art. I might buy the physical game just to get the cards. Anyone else play?