|Undertale AU Ideas Wiki|
|Welcome to the sister wiki of the biggest encyclopedia on Undertale and Deltarune AUs. This wiki hosts the pages and affiliated material that the Undertale AU and Undertale OC Wikis do not; such as non-existent AUs, single-AU character pages, item pages, and so on.
There are currently 90 articles, 73 files, and 6 active users on the site!
This site contains spoilers for Undertale. if you have not completed the game, you may get spoiled.
|About Undertale AUs|
|Undertale Alternate Universes, or "AUs", are alterations to the story, world, and/or characters of Undertale, be it crossovers, changes in aesthetic, or role-swaps.
"AU" is an umbrella term that includes "ATs".
|This wiki is still InDev. Please keep this in mind as you look around.|
Please also refrain from adding categories to pages, as there's a specific type of categorization to come, so please be patient.
|Official Affiliated Pages|
|Undertale AU Wiki|
Undertale OC Wiki
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