DELTARUNE Chapter 5 Released, Steam Concurrent Players Hit 290,000
The concurrent player record, more than double the previous chapter's peak, shows that DELTARUNE's audience is still growing, and the developer's update on Chapter 6 and 7 indicates the project is on track for completion.
Key Facts
- 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.
- 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.
- 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.
- A soundtrack was also released alongside the chapter, with a note advising players not to look at track titles until they finish the chapter.
Reporting from 4 sources: 4Gamer.net, GAME Watch (Impress), Automaton, Denfaminicogamer.
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."
Chapter 5 is the first new content since DELTARUNE's official paid release in June 2025, which bundled Chapters 1 through 4. The chapter was first shown during a Nintendo Direct on June 9, 2026. The developer deliberately kept trailers vague to preserve surprises for first-time players. Alongside the game update, a soundtrack launched with a warning not to view track titles before clearing the chapter. The UNDERTALE official X account changed its name and header to black on June 24, which outlets interpreted as a teaser for the release. Fox's newsletter, sent the same day, confirmed that Chapter 6 development is smooth and that some team members may start Chapter 7 before year's end. The Steam concurrent player count of 291,816 (per SteamDB) far exceeded the previous record of around 130,000 from the Chapters 3 and 4 launch. The game is available on PC, Nintendo Switch, Nintendo Switch 2, PS4, and PS5, with a free demo covering Chapters 1 and 2.
Synthesized by Yomimono from the 4 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.
Sources
- 4Gamer.net 「DELTARUNE」，Chapter 5が追加される無料アップデートを配信開始
- GAME Watch (Impress) 「アンダーテイル」公式Xが黒塗り化。本日配信の「DELTARUNE」チャプター5に関連してか
- Automaton 『DELTARUNE（デルタルーン）』Steam同接約30万人の爆発的人気。待望の「チャプター5」実装無料大型アプデで、過去最高をぶち抜く盛況
- Denfaminicogamer 【大人気】『DELTARUNE』Steam最大同接が過去最高の“29万人”を記録。最新チャプター5が配信され大盛り上がり