A 1994 crossover between DC's Milestone Comics and mainstream DC Universe. When a dimensional rift opens between the two realities, heroes from Dakota and Metropolis must work together against threats that span both worlds, marking the first major Milestone/DC crossover.
The main DC Comics universe following the Flashpoint event and New 52 relaunch in 2011. Prime Earth (Earth-0) serves as home to the primary versions of Superman, Batman, Wonder Woman, and the Justice League. The continuity has evolved through DC Rebirth (2016) and subsequent publishing eras while maintaining its core designation.