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Entertainment • Video Game

Deltarune

Deltarune is an episodic role-playing video game created by Toby Fox, set in a parallel universe to Undertale.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Deltarune is an episodic role-playing video game created by Toby Fox, set in a parallel universe to Undertale. It follows Kris, Susie, and Ralsei as they travel between the Light World and the Dark World to seal Dark Fountains and restore balance. Chapters 1–5 are available, with additional chapters planned as free updates on the official site.

Gameplay and premise

Deltarune is a top-down role-playing game in which the player controls Kris and commands party members in battle. Its story takes place across the Light World and Dark World, where the characters seek to close Dark Fountains.

Development and release

The game was created by Toby Fox, who also created Undertale. The official site states that chapters 1–5 are available and that more content is planned as free updates.

Characters

The central party includes Kris, Susie, and Ralsei. Ralsei is presented as a prince from the Dark World who guides the group through their quest.

Reception and fandom

Deltarune has developed a large fan community and a substantial wiki ecosystem. Fan guides often focus on hidden content, including secret bosses and route-specific encounters.

Key facts

  • Deltarune is an episodic role-playing game created by Toby Fox.
  • It is set in an alternate universe related to Undertale.
  • The story centers on Kris, Susie, and Ralsei.
  • Chapters 1–5 are available according to the official site.
  • The official site describes the game as available on PC/Mac and multiple consoles.
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Canadian context

Deltarune has a broad Canadian audience through its availability on major console and PC platforms, and it is part of the wider global indie game scene enjoyed by Canadian players.

Frequently asked questions

What is Deltarune?
Deltarune is an episodic role-playing video game by Toby Fox, set in a parallel universe to Undertale.
How do you get the secret boss in Deltarune?
Secret bosses are chapter-specific and usually require finding hidden side content; for example, fan guides describe special steps for Chapter 2’s Spamton NEO encounter.
Who is Ralsei?
Ralsei is a prince from the Dark World and one of the main party members who accompanies Kris and Susie.
When is Deltarune Chapter 3 coming out?
The official site says Chapters 1–5 are available now, but the provided sources do not give a specific separate release date for Chapter 3.
Is Deltarune free?
The official site says the game is available with Chapters 1–5 and that more content is planned as free updates; older guides say Chapter 1 was free, but the current official description is the best source here.
What platforms is Deltarune on?
The official site lists PC/Mac, Nintendo Switch, Nintendo Switch 2, PlayStation 4, and PlayStation 5.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/Deltarune
    Supports: Creator, genre, setting, main characters, top-down perspective, episodic structure
  2. Deltarune official site — https://deltarune.com/
    Supports: Official platform list, chapters available, free updates statement
  3. TheGamer — https://www.thegamer.com/deltarune-story-lore-explained/
    Supports: Light World/Dark World explanation, main cast, story premise
  4. Deltarune Wiki (Fandom) — https://deltarune.fandom.com/wiki/Deltarune
    Supports: Chapter 3-related lore details, Dark World reference
  5. IGN — https://www.ign.com/wikis/deltarune
    Supports: Game overview, free Chapter 1 historical information
  6. Wikipedia (French) — https://fr.wikipedia.org/wiki/Deltarune
    Supports: Platforms, secret boss example for Chapter 2