The series is here: Treehouse of Horror series
Treehouse of Horror!Universe is a parallel reality that first appears in "Treehouse of Horror I".
History[]
This universe has weird halloween-themed events happening usually resulting in many people dying. They, however, get revived soon after.
| Universes | |
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| Already existing universes |
2010!Universe · 2041!Universe · 2013!Universe · 2044!Universe · 2030!Universe · Second 2030!Universe · Noir!Universe · Disney!Universe · Hanna Barbera!Universe · Anime!Universe · Pixel!Universe · Over Under!Universe ·
The Serfsons!Universe · Bart's Little Fantasy!Universe · The Simpson!Universe |
| Fanon universes |
Killer Lisa!Universe · No Bart!Universe · Normal Age!Universe · Corrupted!Universe · Fancy Family!Universe · Seymour vs. Armin!Universe · Lady Bouvier's Lover!Universe · Swap!Universe · Tracey Ullman!Universe · Genius Marge!Universe · Authority Swap!Universe · Treehouse of Horror!Universe · Main Universe · Personality Swap!Universe · The Bouviers !Universe · Disney!Universe · Pixel!Universe
· Tex Avery Universe · Live Action Universe · Lego Universe · Simpsonworld!Universe · The Mass Universe · CGI Universe · Musicville Universe
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