The Marvel Multiverse is made up of an infinite number of universes separated only by the thinnest of barriers. Moving from one of them to another isn’t easy, but characters manage it through various means all the time.

The main Marvel comic-book universe is commonly known as Earth-616. Most of the profiles and other details published in this book are for characters who hail from that universe.

However, the universe in which you play your game is actually its own separate universe, one run by your game’s Narrator. Things that happen there only affect the continuity of events in that universe. Events that happen in other universes might be mirrored in your game’s universe, or they might not. That’s entirely up to your Narrator.

At the same time, each character has their own continuity. As your character’s player, you control their continuity.

Most characters spend their entire lives inside their home universe. However, you can—if you like and with the involved Narrators’ blessings—move your character from one Narrator’s game to another. In effect, you’re transporting them from their home universe to an entirely different universe. If they return to their original game, they retain all their memories and experiences from their adventures outside of their home universe.