Undertale AU Wiki

Welcome to the Undertale AU Wiki, the main place for documenting Undertale's AUs. If you wish to contribute, just know that it is REQUIRED for you to read the Rules and Guidelines and the Policy of the Wiki BEFORE doing so.

As this is an AU Wiki, this wiki is NOT meant for characters. The Undertale OC Wiki exists for those. This Wiki is also not meant for AUs that do not have presence anywhere else, and those should be put on the Undertale AU Ideas Wiki.

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Undertale AU Wiki
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BeenAWhile

Post-Neutral Sequel AUs are AUs that take place after one of the Neutral Routes of Undertale.

The exact cut-off between an AU qualifying as a Special Event, and an AU qualifying as a Post-Neutral Sequel is Frisk leaving the Underground. In Undertale, after defeating Omega Flowey, Frisk must go through the northern door for the AU to qualify as a Post-Neutral Sequel. If an event happens before Frisk is able to leave, then the AU is a Special Event.

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