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1. Undertale Multiverse Simulation by Misheru08

   Fandoms: Undertale (Video Game), Deltarune (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • Multi
   • Work in Progress

   29 Sep 2021

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Possible Sans/Reader - Relationship
   • Possible Papyrus/Reader - Relationship
   • Alphys/Undyne (Undertale)
   • Sans (Undertale)/Reader
   • Papyrus (Undertale)/Reader
   • Reader
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Toriel (Undertale)
   • Asgore Dreemurr
   • Alphys (Undertale)
   • Undyne (Undertale)
   • Mettaton (Undertale)
   • Frisk (Undertale)
   • Grillby (Undertale)
   • Muffet (Undertale)
   • Other Character Tags to Be Added
   • Reader plays a game
   • Alternate Universe
   • Undertale Monsters on the Surface
   • Interactive Fiction
   • Possible sans/reader
   • Possible Papyrus/reader
   • Other Additional Tags to Be Added
   • I’m not sure what else to tag yet
   • Pairings will change as story progresses
   • Alternate Universe - Bittybones (Undertale)
   • Bitties are in high demand
   • Ask Bitty Error and Reader
   • The main story is stuck behind a plot door.
   • Everyone wants to wait to open the Main Plot door.
   • They want to play with bitties instead lol
   • Deltarune like Swap au
   • I mean the swap characters replace their originals in DR
   • original Deltarune characters are not swapped
   • swapping all original characters in DR will take extra planning

   Summary

   You test a game for a friend. It is a simulation game based off Undertale. As you solve the puzzle to the door in game, your character is allowed to visit different Undertale AUs. Will you choose to befriend everyone you meet, or maybe have your character fall in love with someone? Is this really just a game?

   A reader interactive story. No real update schedule it will be sporatic. Just a warning.

   Series

   • Part 1 of The Undertale Multiverse Simulation Adventures

   Language:

   English

   Words:

   9,170

   Chapters:

   8/?

   Comments:

   137

   Kudos:

   153

   Bookmarks:

   31

   Hits:

   3,477