When was Undertale originally released?

Q.What is Undertale Yellow?

A.Undertale Yellow is a fan-made prequel to Toby Fox’s Undertale, developed by Team Undertale Yellow and released for Windows on December 9, 2023. It follows Clover, the human with the yellow (Justice) SOUL, and uses Undertale‑style combat and moral routes while adding new areas, characters, and mechanics.

Q.Who are the main characters in Undertale?

A.Undertale’s main cast centers on the player character (Frisk) and a core group of monsters: Toriel, Flowey, Sans, Papyrus, Undyne, Alphys, Mettaton, Asgore, and the Dreemurr children (Asriel/Chara). These characters drive the game’s story and change depending on whether you spare or fight them.

Q.Will there be an Undertale 10th-anniversary celebration?

A.Yes — Undertale received an official 10th‑anniversary celebration in September 2025, including a commemorative memories site, a two‑day charity livestream with Toby Fox and Fangamer, special events (like an orchestral concert), and charity auctions that raised hundreds of thousands of dollars.

Q.What are the different 'souls' in Undertale?

A.Undertale distinguishes human SOULs (upright, colored hearts) and monster SOULs (inverted white hearts). The game shows seven human SOUL colors—commonly linked to specific traits—and the player’s red SOUL is tied to the game’s SAVE/Determination mechanics but its exact “trait” is debated.