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Undertale Yellow cover art

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Undertale Yellow

Team Undertale Yellow · 2023 · PC

Source on GitHubHow to play

Doesn't play in a browser tab yet: it plays on your own device. Opens github.com in a new tab. Follow it to see on your home page when it comes out, or plays here.

On your device

Build from source

The project publishes its code and no build: you build it as its README says.

  • UnderTale-Yellow-Decompilation

    By burnedpopcorn12 stars on its repository

    Source

    Decompilation

    Code last updated Aug 27, 2025

    How to play
    1. There is no build to download: get the code from the project's repository.
    2. Build it as its README says. What the build gives, a program to run or the original game rebuilt for an emulator, is written there too.
    3. The project's page says what it needs from your own copy of Undertale Yellow, if anything.

From SubmitGame's list, read Oct 21, 2026, with releases, stars and licenses as each project's repository gives them. The steps are the same for every project of a kind: its own page has the details.

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About

Welcome to Undertale Yellow. In this fan made prequel to the RPG Undertale, you control a human who falls underground into the world of monsters... but will you make it out alive? Grab your cowboy hat and your gun and take the place of Undertale’s Yellow soul in their journey through the Underground on an original adventure.

Description from IGDB.

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