The Dark Knight and the Man of Steel are close friends in the modern day-but the two weren't always such close allies. Discover how two of the World's Finest Super Heroes met for the first time in the New 52, and the mysterious adventure that takes them to a whole new world-the world of Earth-2! The heroes of the main DC Universe meet their Earth-2 counterparts for the first time!Collects BATMAN #1-4 and JUSTICE LEAGUE #23.1: DARKSEID.

"Batman created by Bob Kane; Superman created by Jerry Siegel & Joe Shuster."

Batman teams up with the Man of Steel to track down and help those who have been infected by a ravenous, mutated Joker virus. Just one problem: they don't know who they are. A virus is spreading, and it's not just after innocent people, but some of our most powerful heroes as well. The biggest question isn't why or how, but who? The Batman Who Laughs was one of the premier villains crawling his way from the depths of the Dark Multiverse and wreaking havoc on the DC Universe. Now he has been infecting some of the biggest heroes across the world with a mutated version of the Joker virus that is coursing through him. Cue the team-up of two of the greatest superheroes in history: Batman and Superman. They decide to work together to find out who is infected and hopefully cure them before it's too late.

Long before Superman fought the unstoppable monster known as Doomsday, the beast's reputation for death and destruction haunted The Man of Steel's home world of Krypton.

It's an untold tale from the early days of Bruce and Clark's crime-fighting careers! A new 3-part epic from another time begins here as Batman and Superman are pitted against a menace that will test their partnership-and their friendship!

The Dark Knight and the Man of Steel uncover a plot by the Toymaster to use a secret, potentially deadly element in his new video game, the characters created by players manifest in real life. The ultimate fighting game results--and a world-wide network of players must team up to create the most powerful, skilled Super Heroes imaginable with one goal: To kill Batman. When Batman and Superman are corned by the Toymaster and Mongul, they are pitted against on another in a battle to the death, with their only hope being the The Worlds' Finest. Collects BATMAN/SUPERMAN #5-9, BATMAN/SUPERMAN ANNUAL #1, WORLDS' FINEST #20-21.

THESE ARE NOT THE WORLD’S FINEST... Batman and Superman-separately, they’re two of the greatest heroes the world has ever seen. Together, they’re an incredible team...and the greatest of friends. But Batman and Superman have never teamed up like this before. This is a Superman who’s lost most of his powers and had his identity revealed to the entire world. Someone is coordinating a series of attacks against him that have brought him to the brink of destruction, and he needs the world’s greatest detective to help him put the clues together. But this Batman isn’t Bruce Wayne. Jim Gordon now protects Gotham as the robot-suited Batman, and he has no reason to trust Superman...especially when his presence in Gotham seems to have brought on a war with a race of super-powered subterranean beings! They may not be the Batman and Superman who have done amazing things together in the past. But if they can’t learn to work together now, there may no longer be a Gotham City to protect! Spinning off of the events of BATMAN VOL. 8: SUPER HEAVY and SUPERMAN VOL. 1: TRUTH, acclaimed writer Greg Pak (ACTION COMICS) and artists Ardian Syaf (GREEN LANTERN) and Cliff Richards (LOBO) chronicle the first meeting between two very changed heroes, with guest appearances by Batgirl, Aquaman, Red Hood and more! Collects BATMAN/SUPERMAN #21-27.