Game Theory: The Undertale / Deltarune Connection FOUND!
7:00
Game Theory: The Undertale / Delt…
Trailer
4.6M viewsDec 22, 2018
YouTubeThe Game Theorists
Game Theory: We Are Playing Kris' Game (Deltarune / Undertale Connection)
3:52
Game Theory: We Are Playing Kri…
Trailer
2.9M viewsDec 22, 2018
YouTubeThe Game Theorists
Game Theory: Gaster FInally UNMASKED! (Deltarune / Undertale Connection)
6:30
Game Theory: Gaster FInally UNM…
Trailer
4M viewsDec 22, 2018
YouTubeThe Game Theorists
Jevil’s Insanity, EXPLAINED! (Deltarune / Undertale Theory)
14:25
Jevil’s Insanity, EXPLAINED! (Deltarune / Undertale Theory)
2M viewsNov 23, 2018
YouTubeSwankyBox
10 Unbelievable UNDERTALE Theories That Change Everything! Undertale Theory | UNDERLAB
10:26
10 Unbelievable UNDERTALE Theories That Change Everything…
749.8K viewsAug 17, 2017
YouTubeUnderlab
Frisk LV 20 Theory in Undertale Speedpaint
0:29
Frisk LV 20 Theory in Undertale Speedpaint
1.8K views3 months ago
TikTokl1k3andl0v3
Undertale Theory: The Psychology of Sans | Gnoggin
12:51
Undertale Theory: The Psychology of Sans | Gnoggin
1.8M viewsMay 5, 2016
YouTubeLockstin & Gnoggin
19:25
UNDERTALE Timeline(s) and Story EXPLAINED!!! - Terracorrupt
392.2K viewsJun 16, 2016
YouTubeTerracorrupt
11:10
10 Secret UNDERTALE Characters You Never Knew Existed! Undertal…
932.7K viewsSep 19, 2017
YouTubeUnderlab
35:03
DELTARUNE: The ROOTS Theory
787.4K views3 months ago
YouTubeGoldpro
1:17:41
DELTARUNE / What is Ralsei? / A Horrifying Theory
343K viewsFeb 11, 2022
YouTubeJaruJaruJ
19:13
Deltarune and Undertale Reacts To Is Sans Ness? by The Game Theor…
270.5K viewsNov 23, 2020
YouTubeDRAGOVID DAVIDAS
5:53
What's Inside Toriel's Locked Room? Undertale Theory | UNDER…
2.2M viewsOct 20, 2016
YouTubeUnderlab
19:36
Deltarune Chapter 4 PROVED Sans Isn't From Undertale
635K views6 months ago
YouTubeNevets
11:28
What Really Happened To The Six Humans? Undertale Theory | UND…
2.4M viewsJan 28, 2017
YouTubeUnderlab
11:08
10 Obscure UNDERTALE Facts You Never Knew! Undertale Theory | U…
1M viewsSep 2, 2017
YouTubeUnderlab
10:08
The Secret Power You Never Knew Sans Had! Undertale Theory | UND…
966.2K viewsNov 18, 2017
YouTubeUnderlab
14:03
SANS Already Knows the ENDING of DELTARUNE || [THEORY] Undertal…
3.5K views9 months ago
YouTubeLore Keeper
7:35
Undertale - Undyne fight (Genocide run) - Challenge
955K viewsSep 21, 2015
YouTubetehngion
10:27
What Inspired UNDERTALE? Undertale Theory and Trivia | UND…
292.4K viewsDec 29, 2016
YouTubeUnderlab
10:53
What Really Happened To Asriel At The End of UNDERTALE? Underta…
341.1K viewsJul 4, 2017
YouTubeUnderlab
17:41
Game Theory: YOU Are The Final Boss Of Deltarune!
3M viewsFeb 3, 2024
YouTubeThe Game Theorists
8:02
The Top 50 Worst UNDERTALE Theories Ever Made! Undertale Th…
324.9K viewsJan 23, 2018
YouTubeUnderlab
10:21
The Alternate Ending to UNDERTALE's Genocide Path! Un…
444.9K viewsOct 17, 2017
YouTubeUnderlab
34:06
DELTARUNE 67 THEORY: Why Gaster is Green and In Between
211.7K views4 months ago
YouTubeSpookyDood
10:11
The Real Reason Why UNDERTALE Is Black And White! Undertale The…
1.5M viewsSep 13, 2017
YouTubeUnderlab
17:28
Game Theory: UNDERTALE - Sans's SECRET Identity!
14.1M viewsFeb 9, 2016
YouTubeThe Game Theorists
16:59
Game Theory: The Many Sides of W.D. Gaster EXPOSED! (Undertale)
9.9M viewsFeb 18, 2017
YouTubeThe Game Theorists
Sans Aus reacts to Game Theory: UNDERTALE - Sans's SECRET Ide…
129.2K viewsSep 15, 2020
YouTubeWings
1:10
What happens if you kill all the main characters in Undertale?
292.3K viewsJun 18, 2016
YouTubeTechno_Byte
See more videos
Static thumbnail place holder