An Alternate Universe is a deviant or alternative plane of reality within the flow of space and time that exists outside of the mainstream flow of events. They are sometimes accessible by rifts opened in space and time through innate power or a powerful ritual.
Known Alternate Universes
- The End (Sam said "Yes" to Lucifer)
- The French Mistake (Supernatural is just a TV show)
- My Heart Will Go On (Balthazar stops the Titanic from sinking)
- Apocalypse World (Mary Campbell refused to make a deal with Azazel)
- The Bad Place (A wooded world that appears to be ruled by monsters)
- Scooby-Doo Universe (An animated world where the Scooby Gang exists)
- Yokoth and Glythur's World (A universe mostly consumed by the gods Yokoth and Glythur)
Appearances
- Season 5
- The End (The End)
- Season 6
- The French Mistake (The French Mistake)
- My Heart Will Go On (My Heart Will Go On)
- Season 12
- All Along the Watchtower (Apocalypse World, first appearance)
- Season 13
- Lost & Found (Apocalypse World)
- The Rising Son (Apocalypse World)
- War of the Worlds (Apocalypse World)
- The Bad Place (Apocalypse World; The Bad Place, first appearance)
- Wayward Sisters (The Bad Place; Apocalypse World, mentioned only)
- Devil's Bargain (Apocalypse World, mentioned only)
- Good Intentions (Apocalypse World)
- Scoobynatural (Scooby-Doo Universe)
- The Thing (Yokoth and Glythur's World and Apocalypse World, mentioned only)
- Bring 'em Back Alive (Apocalypse World)
- Unfinished Business (Apocalypse World)
Trivia
- Mary Winchester is currently (as of The Bad Place) trapped in Apocalypse World with Lucifer. However, Lucifer managed to escape in War of the Worlds.
- She and Jack have been trapped in Apocalypse World together since The Bad Place.
- Virgil is the first and longest character to be trapped in an alternate universe.
- Dean has visited every single one except Yokoth and Glythur's World.
- The French Mistake is the only known universe without magic. A Goblet of Blood still works there though and can reach someone in the main reality.
- While using Kaia's powers in an attempt to locate Mary Winchester, Jack sees windows into several different realities, one of which appears to be a paradise.
- The Apocalypse World is the most recurring alternate universe.
- Season 13 featured the most alternate universes and the most appearances of alternate universes. It also has several rifts open between the universes throughout the season.
- In Wayward Sisters, a rift was open between the Bad Place and the Main Universe for a few days. As a result, monsters from that alternate universe crossed over into the Main Universe. Though several were killed, Sam suggested that more monsters may have made it through before the rift closed that aren't accounted for.