Demon's Night Fever is an Arc System Works simulation RPG set for release on October 22, 2026 for PlayStation 5, Nintendo Switch, and PC via Steam. An eight-chapter official web manga began serialization on September 17, 2026, ahead of the launch and tied to the game's Tokyo Game Show 2026 exhibit.
Arc System Works has moved Demon's Night Fever from an unnamed project to a dated release. The game is set for October 22, 2026 on PlayStation 5, Nintendo Switch, and PC via Steam. Digital pre-orders opened on the Nintendo eShop, and the packaged and download versions both cost 4,950 yen including tax. A playable demo is planned for the Sega/Atlus booth at Tokyo Game Show 2026, which runs from September 17 to September 21.
The game is a training RTA simulation RPG developed by Drecom. Souhei Niikawa, known for the Disgaea series, is the producer. Original concept and scenario are credited to Romantoyama, with character design by Yuuji Himukai and music by Tatsuya Yano. The premise follows a programmer named Jaryuin Kyoushirou, who becomes the apostle of a baby evil god, Gigasugoides, and works through a revival program using chapters with day limits. Battles run on a grid in turn-based phases, and servant units act on their own without direct orders. A pre-order trailer features the theme song "Dropout" by syudou.
On September 17, 2026, Arc System Works announced that an official web short manga has begun serialization. The eight-chapter comic follows Kyoushirou, a programmer who hates the world, and Evil God Gigasugoides, who carries a revival program. A giveaway tied to the game's Tokyo Game Show 2026 exhibit offers autographed colored paper from seven voice actors, including Kaori Mizuhashi and Yuya Hirose.
Earlier, on June 3, 2026, the official Anime Expo account announced that Arc System Works would hold a developer panel on July 4, 2026. The panel would feature an unannounced new anime-style title alongside updates on Guilty Gear -Strive- and Demons' Night Fever, with producers Ken Miyauchi and Sohei Shinkawa, and designer Satoshi Hiyae.
Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.
Structured graph also available as JSON at /public/entities/demon-s-night-fever.
CC BY 4.0.
Arc System Works announced on September 17 that an official web short manga for its simulation RPG Demons Night Fever has begun serialization. The eight-chapter comic follows Kyoushirou, a programmer who hates the world, and Evil God Gigasugoides, who carries a revival program. A giveaway tied to the game's TGS2026 exhibit offers autographed colored paper from seven voice actors, including Kaori Mizuhashi and Yuya Hirose.
Arc System Works will release Demon's Night Fever on October 22, 2026 for PlayStation 5, Nintendo Switch, and PC via Steam. The Nintendo eShop page opened and digital pre-orders began, accompanied by a short trailer built around the theme song "Dropout" by syudou. The training RTA simulation RPG is developed by Drecom. Souhei Niikawa, known for the Disgaea series, is the producer, with original concept and scenario credited to Romantoyama and character design by Yuuji Himukai. Tatsuya Yano handles the music. In the game, a programmer named Jaryuin Kyoushirou becomes the apostle of a baby evil god, Gigasugoides, and works through a revival program using chapters with day limits. Battles run on a grid in turn-based phases, and the servant units act on their own without direct orders. A playable demo will be set up at the Sega/Atlus booth at Tokyo Game Show 2026, which runs from September 17 to September 21. The packaged version costs 4,950 yen including tax, and the download version carries the same price.
The official Anime Expo account announced that Arc System Works will hold a developer panel on July 4, 2026, featuring an unannounced new anime-style title alongside updates on Guilty Gear -Strive- and Demons' Night Fever. The panel will include producers Ken Miyauchi and Sohei Shinkawa, and designer Satoshi Hiyae.