Deltarune Chapter 5 Nears Release as Development Team Shifts Focus

Fans of the Undertale follow-up, Deltarune, are one step closer to experiencing the highly anticipated Chapter 5. Toby Fox, the creator of both games, has announced that the bulk of the development team has moved on to other projects, signaling the final stages of development for the next installment.

Testing and Localization Underway

According to a recent post on Bluesky, professional testers are currently familiarizing themselves with the game and will begin formal testing on April 1st, 2026. Japanese translation quality assurance is projected to be completed in April as well. GamesRadar+ reports that Fox indicated the testing period will be “indefinite,” clarifying it’s not a euphemism for indefinite delay.

Development Progress and Future Plans

Although most of the development team has transitioned to other tasks, including potential function on Chapter 6, Fox notes that the remaining work focuses on bug fixes, translation refinements, and console approval processes. Toby Fox’s Winter 2025 Newsletter details that all rooms are largely complete, with only minor polish needed, and almost all scenes are finished. Most battles are also complete, though some require adjustments to pacing and bullet patterns.

Release Timeline

Chapters 1 and 2 of Deltarune were released in 2018 and 2021, respectively. Chapters 3 and 4 launched alongside the Switch 2 in 2025, suggesting a potentially accelerated release schedule. While a specific release date for Chapter 5 remains unconfirmed, the current progress indicates a launch sometime in 2026. Nintendo Life confirms Fox will refrain from providing further updates “for a while.”

Key Takeaways

• Formal testing of Deltarune Chapter 5 begins April 1st, 2026.
• Japanese translation is expected to be finalized in April 2026.
• The majority of the development team has moved on to other projects.
• Release is anticipated sometime in 2026.