Officially called Marvel Super Heroes Secret Wars, the 12-issue series found the Avengers, the X-Men, the Fantastic Four, Hulk, Spider-Man, and others teleported to an alien world by an omnipotent being known as the Beyonder to do battle with some of their biggest villains.
For those not up on their comic book trivia, Secret Wars is a 1984 comic book event that featured almost every major hero and villain in the Marvel universe.
It makes total sense why the Russo Brothers, who grew up reading comic books, would be down to adapt the incredibly geeky Secret Wars.