In 1985, DC decided to combine all the infinite worlds of its multiverse into a single universe.
This Reading Order lays out this combined universe, book by book, guided by the amazing work at The Unauthorized Chronology of the DC Universe. It also includes those books published under the Vertigo banner that nonetheless take place in the DC Universe – such books are marked Vertigo in the Reading Order.
It also, since it didn’t take long for the universe to splinter back into a multiverse again, includes some of those worlds too.
The Main Universe