The app utilizes a collectible card-based battle system, and can be used to unlock bonuses in the Xbox 360 and PlayStation 3 versions of the game. The app also puts players into a group of 3 combatants to challenge famous D.C. characters. The Wii U version does not support this feature. Multiplayer functionality was added to the iOS version in an update on April 24, 2014. Related media The Injustice: Gods Among Us comic book series was announced by Ed Boon on October 5, 2012, during the EB Games Expo. The series serves as a prequel detailing the events leading up to the game, as well as those that happen in the interval between Superman's murder of the Joker and the discovery of the primary universe. The series was first written by Tom Taylor and illustrated by a number of artists, including Jheremy Raapack, Mike S. Miller, Bruno Redondo, Tom Derenick, and others. The comic was released digitally beginning on January 15, 2013. The series was later issued in regular comic book form, and eventually a collected edition. In December 2014, Tom Taylor announced that he would be leaving the series and left after writing Injustice: Year Three #14, with Brian Buccellato replacing him by continuing the story into Year Four and Five. The final chapter of the series was released in September 2016, leaving the story incomplete; another comic book series, titled Injustice: Ground Zero, followed afterwards, which picked up the story and concluded the retelling of the game's events from Harley Quinn's perspective. Arcade adaptation An arcade port of the mobile version of the game was released to arcades on October 16, 2017. Injustice: Gods Among Us – Ultimate Edition On October 7, 2013, Warner Bros. Interactive announced the Ultimate Edition, which includes all previously released downloadable content for Injustice: Gods Among Us. The Ultimate Edition was released on November 12, 2013, in the United States, November 27, 2013, in Australia, and November 29, 2013, in Europe for the PlayStation 3, PlayStation 4, PlayStation Vita, Xbox 360, and Microsoft Windows. The American release was also bundled with the game's official soundtrack. During the COVID-19 pandemic, this version was released for free for a limited time to Steam (PC), PlayStation Store (PS4), and Microsoft Store (Xbox 360 Standard Edition). Reception Critical response Injustice: Gods Among Us received positive reviews from critics. Aggregating review website Metacritic gave the Wii U