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Project Jumpstart UNDERTALE AUs

@projectjumpstart

28 posts

projectjumpstart

Sep 20, 2025

So...Papyruses, what do you guys like to do together?

#project jumpstart #underfell #outertale #js!underfell #js!outertale #outer sans #outertale sans #outer papyrus #outertale papyrus #sans #papyrus #fell papyrus #papyrus underfell #underfell papyrus #papyrus outertale

projectjumpstart

Sep 15, 2025

UNDERTALE's 10th Anniversary

#project jumpstart #undertale #underswap #js!underswap #underfell #outertale #js!underfell #js!outertale #sans #classic sans #outer sans #classic papyrus #papyrus #underfell papyrus #underswap papyrus #undertale 10th anniversary #undertale 10 year anniversary #undertale10周年 #asgore #toriel #alphys #undyne #flowey #swap temmie #sans undertale #undertale au #utmv #undertale aus #swap sans #fell sans

projectjumpstart

Jul 23, 2025

Which skeleton has the worst jokes?

#project jumpstart #undertale #underswap #outertale #js!underswap #js!outertale #outer sans #outertale sans #classic papyrus #papyrus #sans #swap papyrus #pun not intended

projectjumpstart

Jul 16, 2025

What would happen if swap Asgore and classic Toriel interacted each other? Would they get along or will be hate each other?

#project jumpstart #undertale #underswap #js!underswap #sans #asgore #toriel #swap asgore #sans undertale #classic sans

projectjumpstart

Jul 12, 2025

To all the sans (and swap papyrus), do you guys prank your brothers?

#project jumpstart #undertale #underswap #underfell #outertale #js!underswap #js!underfell #js!outertale #sans #classic sans #swap sans #fell sans #outer sans #swap papyrus #underswap papyrus #underswap sans #underfell sans #sans undertale #undertale sans

projectjumpstart

Jun 29, 2025

#project jumpstart #undertale #underswap #outertale #js!underswap #js!outertale #sans #classic sans #deltarune #asgore #papyrus #sans undertale #sans au #undertale sans #papyrus undertale #undertale papyrus #swap papyrus #papyrus underswap #underswap papyrus #underswap asgore #outertale papyrus #deltarune asgore #asgore deltarune #asgore dreemurr

projectjumpstart

Jun 28, 2025

#project jumpstart #underswap #js!underswap #sans #undertale #au undertale #undertale au #undertale aus #swap sans #sans underswap #underswap sans #temmie #chara

projectjumpstart

Jun 10, 2025

#Youtube #project jumpstart #underswap #js!underswap #sans #swap sans

projectjumpstart

Jun 8, 2025

How much nyehs could a papyrus nyeh if a papyrus could nyeh nyehs?

#project jumpstart #undertale #underfell #underswap #outertale #js!underfell #js!underswap #js!outertale #sans #fell sans #undertale aus #undertale au #utmv #fell papyrus #papyrus undertale #swap papyrus #outer papyrus #classic papyrus

projectjumpstart

Jun 3, 2025

#undertale aus #au undertale #undertale au #undertale sans #sans undertale #classic sans #ut sans #au sans #sans the skeleton #sans au #sans #sans ut #project jumpstart #underfell #js!underfell #sans underfell #underfell sans #uf sans #underswap #js!underswap #swap sans #sans underswap #underswap sans #outertale #js!outertale #outer sans #sans outertale #deltarune #deltarune tomorrow #undertale

projectjumpstart

May 27, 2025

Doomfanger is so cute!

#project jumpstart #underfell #js!underfell #sans #sans au #fell sans #underfell sans #sans underfell #uf sans #fell papyrus #underfell papyrus #papyrus underfell #doomfanger

projectjumpstart

Apr 5, 2025

Who of the four Sanses (or Papyrus in the case of Underswap) can balance the most hot dogs on their head?

#project jumpstart #underfell #underswap #undertale #js!underfell #js!underswap #classic sans #sans #sans aus #sans au #undertale aus #undertale multiverse #au undertale #utmv au #utmv #sans undertale #au sans #undertale au #sans the skeleton #papyrus #papyrus the skeleton #sans underswap #sans underfell #fell sans #swap sans #underswap sans #swap papyrus #papyrus underswap #papyrus underfell #underswap papyrus

projectjumpstart

Apr 4, 2025

If you’re indecisive, how do you decide you are?

If you drop a soap bar, is the floor clean or the soap dirty?

Why do we call it a hamburger when there’s no ham?

If you’re “clearly confused,” are you clear or confused?

Why do we call paintings “paintings?” It’s done. That’s a painted.

#project jumpstart #undertale #classic sans #sans #ut sans #undertale sans #sans undertale #sans the skeleton

projectjumpstart

Jan 11, 2025

Is that a Underfell papyrus?

#...what?#I thought this was something important #nope...it's just swapyrus posting random stuff #i'm going back to bed

projectjumpstart

Jan 1, 2025

New Years 2024-2025

#project jumpstart #underfell #underswap #undertale #outertale #js!underfell #js!underswap #js!outertale #classic sans #sans #undertale sans #sans undertale #sans au #undertale au #ut au #utau #utmv #utmv au #papyrus #new years #new years 2025 #new years eve #celebration #holidays

projectjumpstart

Dec 25, 2024

Christmas 2024

sprites by: @proctor-dorkchop

#project jumpstart #underfell #underswap #undertale #outertale #js!underfell #js!underswap #js!outertale #classic sans #sans #sans the skeleton #sans undertale #sans au #undertale au #ut au #utmv #utau #utmv au

projectjumpstart

Dec 21, 2024

What would happen if all the sanses lived in the same apartment?

#project jumpstart #underfell #underswap #undertale #outertale #js!underfell #js!underswap #js!outertale #classic sans #sans #papyrus the skeleton #papyrus #papyrus undertale #swap sans #sans underswap #outer sans #sans au #undertale au #undertale multiverse #au sans #sans aus #ut au #alternate universe

Project Jumpstart UNDERTALE AUs @projectjumpstart - Tumblr Blog | Tumgag