Terms of Use

Last updated: November 8, 2026

Unofficial fan site

undertaleyellow.org is a free, non-commercial fan site. It is not affiliated with, endorsed by or operated by Team Undertale Yellow or Toby Fox. Undertale Yellow belongs to Team Undertale Yellow; UNDERTALE belongs to Toby Fox. All trademarks and artwork remain the property of their owners.

Using the site

You may play the game and read our guides for personal, non-commercial use. Please don't copy the site, scrape it in bulk or re-host the game files from it.

No warranty

The browser version is provided as-is. It may not work on every device or browser, and browser saves can be lost if site data is cleared. For the official experience, download the game from Game Jolt.

Content removal

If you are a rights holder and want something changed or removed, email hello@undertaleyellow.org and we will respond promptly.