Watch Matpat Undertale Videos

Game Theory: Who is W.D. Gaster? (Undertale)

Game Theory: UNDERTALE - Sans's SECRET Identity!

Game Theory: Gaster's Identity REVEALED! (Undertale)

Game Theory: The Tragedy of Deltarune (Undertale)

Game Theory: The Undertale / Deltarune Connection FOUND!

Undertale - Nintendo Switch Release Trailer

Game Theory: YOU Are The Final Boss Of Deltarune!

Game Theory: Gaster FInally UNMASKED! (Deltarune / Undertale Connection)

Game Theory: Why I Gave the Pope UNDERTALE!

What Happens if you only kill PAPYRUS?

Game Theory: The Many Sides of W.D. Gaster EXPOSED! (Undertale)

MatPat gives the Pope Undertale (real)

Game Theory: This is NOT Your Story! | The Deltarune Undertale Connection

Undertale is a horribly made game

Addressing The Undertale Community…

Game Theory Condensed - Why I Gave the Pope Undertale WITHOUT FILLER

Science Blaster (Game Theory) X Finale (Undertale)

We Fight Undertale's SECRET BOSS! | DeltaRune (Undertale 2)

“Sans is Ness” Drama Explained (2016-2025)

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