10 Unbelievable UNDERTALE Theories That Change Everything! Undertale Theory | UNDERLAB
10:26
10 Unbelievable UNDERTALE Theories That Change Everything…
749.7K viewsAug 17, 2017
YouTubeUnderlab
Game Theory: UNDERTALE - Sans's SECRET Identity!
17:28
Game Theory: UNDERTALE - Sans's SECRET Identity!
14.1M viewsFeb 9, 2016
YouTubeThe Game Theorists
ANOTHER YOU (Deltarune Theory & UTDR Analysis)
1:21:49
ANOTHER YOU (Deltarune Theory & UTDR Analysis)
122.7K views2 months ago
YouTubeGaret UTDR
The Secret of W.D. Gaster Revealed! | UNDERTALE ANNIVERSARY ANALYSIS
27:43
The Secret of W.D. Gaster Revealed! | UNDERTALE ANNIVERSARY AN…
79.1K views3 months ago
YouTubeLoreFactsTV
The Undertale Iceberg Explained - A Deep Dive
1:14:53
The Undertale Iceberg Explained - A Deep Dive
2.9M viewsMar 2, 2021
YouTubesilentchatterbox52
UNDERTALE Timeline(s) and Story EXPLAINED!!! - Terracorrupt
19:25
UNDERTALE Timeline(s) and Story EXPLAINED!!! - Terracorrupt
391K viewsJun 16, 2016
YouTubeTerracorrupt
The lore behind W. D. Gaster's backstory | Undertale/deltarune theory
8:34
The lore behind W. D. Gaster's backstory | Undertale/deltarune th…
113 views2 months ago
YouTubeAimerXo
0:22
Exploring Undertale Purgatory and Deltarune Concepts
867.1K views1 month ago
TikTokverest76
28:05
Why does Sans bleed? - Undertale Theory
162.7K viewsMar 17, 2024
YouTubeTheSoph™
18:53
The Complete Undertale Timeline - Pacifist | The Leaderboard
3.5M viewsMay 8, 2020
YouTubeThe Leaderboard
4:36
Stars, Crystals & SOULs - UNDERTALE Theory
1.7K views9 months ago
YouTubeOctaniko
45:51
All UNDERTALE Lore Within Legends of Localization Revealed!
73.4K viewsNov 18, 2023
YouTubeJaruJaruJ
10:21
We Finally Know How DELTARUNE Connects To UNDERTALE! Deltar…
97.4K views7 months ago
YouTubeUnderlab
4:44:44
Psychologist Plays Undertale (Part 2): The Psychology of Papyrus
7 months ago
YouTubePsyculturists
55:36
Reviewing 30 of YOUR THEORIES! | Deltarune: Theory Review 4 | Delta…
118.3K views5 months ago
YouTubeSpookyDood
9:43
Why Determination Matters In Deltarune
68.5K views5 months ago
YouTubeCiblesGD
10:18
The Anagram Theory - Deltarune / Undertale Analysis
67.2K views5 months ago
YouTubeLukerfuffle
42:25
The Sans the Fandom Forgot | Undertale Character Analysis
776.3K viewsSep 29, 2024
YouTubeDorked
11:36
I Solved Deltarune's Biggest Mystery...
142.6K views1 year ago
YouTubeCiblesGD
8:08
Remember Those Old Deltarune Chapter 1 Theories?
233.7K views11 months ago
YouTubeKris_Roomba
35:03
DELTARUNE: The ROOTS Theory
711.1K views2 months ago
YouTubeGoldpro
5:42:03
"Game Over!?" Psychologist Plays Undertale Part 3
68.5K views7 months ago
YouTubePsyculturists
4:37
Undertale : theory of everything | phase 1 | chromatic aberration
42 views2 months ago
YouTube§ zord §
9:16
DELTARUNE: Inverted Soul Theory
125.1K viewsJul 31, 2024
YouTubeGoldpro
17:25
Game Theory: Who is W.D. Gaster? (Undertale)
15.3M viewsFeb 4, 2017
YouTubeThe Game Theorists
16:59
Game Theory: The Many Sides of W.D. Gaster EXPOSED! (Undertale)
9.9M viewsFeb 18, 2017
YouTubeThe Game Theorists
6:30
Game Theory: Gaster FInally UNM…
Trailer
4M viewsDec 22, 2018
YouTubeThe Game Theorists
1:28
Undertale: Exploring the Characters of Undyne and Sans
24.8K views1 month ago
TikToklorfgamer_yt
13:59
Comprehensive Parallel Timelines: Deltarune and Undertale
10.7K views2 months ago
YouTubeMartian Fox
19:38
The TRUE Meaning Behind This NEW Undertale NPC! (Undertale 1…
10.4K views4 months ago
YouTubeFrutiShade
See more videos
Static thumbnail place holder

Short videos

0:22
Exploring Manipulation and Lies in Undertale Fan Theo…
97.4K viewsFeb 9, 2024
TikToksillyclownguyy
0:22
Exploring Undertale Purgatory and Deltarune C…
867.1K views1 month ago
TikTokverest76
0:15
Exploring the Characters of Undyne and Sans in Undert…
3.6K views1 week ago
TikTokcanabalisticghost2
1:23
Why Papyrus is the Strongest Undertale Chara…
393.5K viewsJan 8, 2024
TikTokmilkinthymicrowave
0:48
Sans Undertale Game Theory
1.1K views1 month ago
YouTubeMediak
Undertale Merchandise and Fan Theories
56.4K viewsMar 23, 2023
TikTokmysticor_
0:08
Nightmare Sans and Error Sans Explained in Undertale
2.8K views1 month ago
TikTokanerrorwasfound
1:02
Exploring Undertale and Deltarune Concepts
535 views5 months ago
TikTokjazzleontrim
0:08
Understanding Killer Sans in Undertale Lore
149.1K views7 months ago
TikTokgihachan
Understanding Sans from Undertale: Exploring Fellsans
46.5K views9 months ago
TikTokcrying_sans1
1:28
Undertale: Exploring the Characters of Undyne and …
24.8K views1 month ago
TikToklorfgamer_yt
2:48
Exploring Sans's Mysterious Identity in Undertale
9.3K views2 weeks ago
TikToktheamaazing.clip
0:06
Exploring the Undertale AU: A Journey with Sans
18.4K views10 months ago
TikTok.eiramm
0:21
Exploring the World of Undertale Narratives
2.9K views4 months ago
TikTokdrawing_nosohard
4:39
Understanding Sans in Undertale: A Deep Dive
7.7K views3 months ago
TikTokilfrisk687
0:24
Undertale 10th Anniversary Reveals New Gaster Lore
221.9K views4 months ago
YouTubeCiblesGD
0:58
Exploring Undertale and Its Alternate Universes
3.9K views3 weeks ago
TikTokmilkymiks
0:46
UNDERTALE SECRET TRUE LAB MESSAGE
17.3K viewsNov 14, 2024
YouTubemeowabyte
0:17
Explore the Fascinating World of Undertale Charact…
3K views2 weeks ago
TikTokcoolchiptok
0:24
La teoria de undertale Demo
4.5K views2 months ago
YouTubeFraan
Static thumbnail place holder