this time in the format Earth, hyphen, numeral, from Earth-0 to Earth-51. Even with a new Multiverse, not every published or related work had an "Earth" within the 52 and there were no in-continuity intercompany crossovers. Taking advantage of the fact that many of these universes were mostly unchronicled or merely glimpsed and that Final Crisis also changed the Multiverse slightly, many stories featuring alternate worlds and their interactions were published, which led certain inconsistencies and retcons to appear, such as Earth-1 being originally a "mirror" of Earth-One and later being the reality of J. Michael Straczynski's Superman: Earth One or Earth-16 being the home of an alternate Superman/Christopher Kent, the home of the Super-Sons, and later the reality of the Young Justice TV series. Also, some universes appearing in the new continuity were never given a proper place within the 52 Universe, such as Prime-Earth. The New 52 The new restored universe with only 52 worlds opened myriad possibilities for new stories and crossovers with different versions of heroes interacting with the main versions of heroes as well as the stories resulting from the new integrated characters from Milestone and Wildstorm. However, it became chaotic in just five years. Many stories and situations of other Universes were not followed well. The number designations could be completely disregarded from story to story and some universes were recreated over and over. In addition, as most of the history of the Modern Age was still being the main continuity, younger readers could not follow the stories of the mainstream versions of the DC heroes, just as had happened prior to the original Crisis on Infinite Earths. In order to overcome these new problems, a new event was created to restart the DC Comics' Universe. In the Flashpoint miniseries (May–September 2011), the Flash alters the timeline of Earth-0 creating a ripple effect that affected several past events, Earth-13 (Vertigo Universe) and Earth-50 (new Wildstorm Universe). Similar to the end result of Crisis on Infinite Earths, a new mainstream Earth is created from the former three, with a whole new history. Most of the stories have been retold anew but certain events of New Earth remain (such as Batgirl being crippled by the Joker). Since it was established after Infinite Crisis that if something ever happened to the main Universe, the whole Multiverse could be affected as well, thus a new Multiverse of 52