Resolution criteria

This market resolves to the exact date (in UTC) when the official release date for Deltarune Chapter 5 (or the next official chapter/major installment of the game) is first publicly posted.

• Official Sources: The announcement must come from Toby Fox, the official @UNDERTALE or @tobyfox accounts on X (Twitter) or Bluesky, the official Undertale/Deltarune Newsletter, the official Deltarune website, or an official gaming showcase (such as a Nintendo Direct).

• Definition of "Release Date": The announcement must specify a concrete calendar date (day, month, and year). Broad release windows (e.g., "Fall 2026" or "Q4") do not qualify.

• Surprise Release: If Chapter 5 is surprise-released without a prior specific date announcement, this market will resolve to the date of the actual release.

• Timezone: Resolution will be determined using Coordinated Universal Time (UTC).

Background

Following the release of Deltarune Chapters 3 & 4 on June 4/5, 2025, creator Toby Fox confirmed that Chapter 5 is slated for a 2026 release. As of early 2026, development has transitioned into localization and console porting. Chapter 5 will be added as a free update for players who already purchased the game.

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