Board Thread:News and Announcements/@comment-9346948-20160512213814/@comment-30131072-20161015155334

check this https://en.wikipedia.org/wiki/List_of_DC_Multiverse_worlds#Arrowverse_and_other_television_series.

There is 5 universe on Arrowverse!!!

Earth One, Earth Two, Earth Three, Unnamed (Supergirl's Earth) and Unnamed (The Flash 1990's Earth).