Over Under!Universe is a creepier version of our reality featured in "Treehouse of Horror XXX".


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This world is populated by human-eating aliens, and is covered by vines that attack people. Bart and Lisa from the Tracey Ullman!Universe visited this world temporarily.

Universes
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
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
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