Toby Fox is actively developing DELTARUNE, having released Chapter 5 in June 2026, and is supervising the first Undertale Museum exhibition scheduled for 2027.
Toby Fox released Chapter 5 of DELTARUNE on June 25, 2026, as a free update across PlayStation 5, PlayStation 4, Nintendo Switch 2, Nintendo Switch, and PC via Steam. The chapter reached an all-time high of approximately 290,000 concurrent players on Steam, more than double the peak of about 130,000 from the Chapters 3 and 4 launch in June 2025. A soundtrack was released alongside the chapter, with a note advising players not to look at track titles until they finish the chapter. In a newsletter published the day before, Fox stated that development of Chapter 6 is progressing smoothly and that it would not be surprising if work on Chapter 7 begins before the end of the year. Fox commented, "Enjoy this crazy work I thought up 10 years ago. Now back to working on the next chapter."
In July 2026, the Undertale Museum Executive Committee announced the first large-scale exhibition dedicated to Undertale, called "Undertale Museum," supervised by Fox. The exhibition will run in Tokyo at Sunshine City from February 19 to March 10, 2027, and in Osaka at ATC Gallery from April 22 to May 9, 2027. The exhibition is described as an immersive, experiential space where each step forward fills visitors with determination, a direct reference to the game's mechanics. Fox's involvement ensures the exhibition reflects the game's distinctive visual style and themes.
In May 2026, Fangamer released a remake of the 2008 free RPG Maker title OFF, with Fox contributing new BGM to the project. Original creator Mortis Ghost also contributed new content. A Japanese localization and collector's edition are planned.
Synthesized by Yomimono from the cited Yomimono stories below, each itself
sourced, then editorially reviewed. Every
fact links the story it came from.
Jul 30
The first large-scale exhibition dedicated to the RPG "Undertale" will be held in Tokyo and Osaka in 2027. The event, called "Undertale Museum," is supervised by creator Toby Fox and will feature immersive, experiential exhibits that let visitors explore the game's world. The Tokyo venue is Sunshine City in Ikebukuro, running from February 19 to March 10, 2027. The Osaka venue is ATC Gallery in Nanko, running from April 22 to May 9, 2027. The announcement was made on July 30, 2026, by the Undertale Museum Executive Committee, with a teaser website and official X account opening the same day. Fox's involvement ensures the exhibition reflects the game's distinctive visual style and themes. The exhibition is described as a space where each step forward fills visitors with determination, a direct reference to the game's mechanics.
Jun 24
Toby Fox released Chapter 5 of DELTARUNE on June 25 as a free update for PlayStation 5, PlayStation 4, Nintendo Switch 2, Nintendo Switch, and PC via Steam. The chapter sends protagonist Kris and friends into a Japanese-style world filled with blooming flowers. On Steam, the game reached an all-time high of approximately 290,000 concurrent players, more than double the peak of about 130,000 seen when Chapters 3 and 4 launched in June 2025. A soundtrack was also released alongside the chapter, with a note advising players not to look at track titles until they finish the chapter. In a newsletter published on June 24, Fox stated that development of Chapter 6 is progressing smoothly and that it would not be surprising if work on Chapter 7 begins before the end of the year. The UNDERTALE official X account briefly blacked out its name and header, which outlets linked to the Chapter 5 release. Fox commented, "Enjoy this crazy work I thought up 10 years ago. Now back to working on the next chapter."
May 21
Fangamer, a company known for game merchandise, has remade the 2008 free RPG Maker title OFF. The project updates graphics, UI, battle system, and music while preserving the original's surreal tone. Original creator Mortis Ghost contributed new content, and Toby Fox worked on new BGM. A Japanese localization and collector's edition are planned.