From the back of the book:
THE OMNIVERSE:
The place where all realities unite.
From the jungles of Pelucidar to the canyons of Monster Island.
From the towers of Asgard, to the peaks of Mount Olympus.
From shining Metropolis to the crime-ridden streets of Gotham.
From the nether regions of the Underworld to the most distant stars.
From the depths of Hell to the pinnacle of Heaven.
From the prehistoric past to post-apocalyptic waste…
From the castles of Transylvania, to the moors of London…
From a Long Time Ago, in a Galaxy Far, Far Away, to Space, the Final Frontier…
From Oa to Taa…
From the Crisis on Infinite Earths to the Infinity Gauntlet…
From Paradise Island to the Gates of Atlantis…
From the Lost World of Hyperboria to the grime of Mega-City One…
From Her Majesty’s Secret Service to the Texas Rangers…
All roads lead from the Omniverse.
Excelsior!!!