Undertale AU Ideas Wiki
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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 143 articles, 286 files, and 8 active users on the site!

Even though this wiki has very, very few standards, there are still standards. Please be sure to thoroughly read the Rules and Guidelines and the Policy of the Wiki before contributing to our Wiki.

This site contains spoilers for Undertale. if you have not completed the game, you may get spoiled.


Alternate Universes

Alternate Universes

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Alternate Universes


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".


Notice
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
Undertale Ideas Wiki - You are here


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Latest Blogs
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Page Layout and W.I.P. questions

I'm from the backrooms fandom and recently h…

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Yummyoreosicle Yummyoreosicle 26 May
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Broken Trust (Undertale AU)

Broken Trust is an Undertale AU thats about …

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