Since the first days of the Silver Age of comics, DC has contained a vast, sprawling multiverse that encompasses numerous versions of Earth. Whereas some of these worlds have only been glimpsed through short stories, others have been given some greater depth. These alternate worlds all have something to offer alongside the main Earth, and even some with the most comics can never have too much ground covered. Whether certain worlds return in an ongoing format or as shorter miniseries, there's always more that can be done and explored with alternate versions of iconic characters.
Source：https://www.cbr.com/most-interesting-dc-elseworlds-universes/
