There are ten Multiversity issues, 40 pages each. Two bookends ala Seven Soldiers
7 alternate world issues:
-Pulp adventure world where Doc Fate, Abin Sur, the Mighty Atom and Lady Blackhawk fight nazi zombies, drawn by Chris Sprouse
-The Just, Earth-16 full of teenage superheroes where Batman and Superman have defeated all the bad guys, leaving the children to be gossipy, shallow "The Hills" types. Ben Oliver draws that one.
-Pax Americana, uses the storytelling devices of Watchmen(8 panel grid instead of 9, natch) with the original Charlton characters. Frank Quitely has been drawing this mothafucka for about half a decade now.
-Flashworld, Morrison's definitive All-Star Superman/Pixar-esque take on the Marvel family. Cameron Stewart on art duties.
-A guidebook that goes into detail over what all the 52 worlds are, minus the 7 unknown ones. I think there's a framing device with Batman and Kamandi
-Nazi world, where Hitler won thanks to Superman, who one day realizes "fuck me, I'm working for Hitler!" Leads the revolt alongside the Freedom Fighters led by Uncle Sam, the last remnant of America that was conquered in 1956. Big Game of Thrones kind of story
-He hasn't mentioned it since 2011, but there's supposed to be a Kirby-verse world
-Ultra Comics, takes place in "our world". In a neat bit of meta-fiction, Ultra will not only tell the tale of the haunted comic book, but actually be that comic book itself. Morrison described it as, "the scariest thing I've ever written. It plays into stuff I'm interested in, breaking down the barriers of what's real and what's not. We developed this hypnotic induction technique to really fuck people up. It has mental effects and psychic effects that I think are quite bizarre. "