DEMONS' NIGHT FEVER, a Training RTA Simulation RPG, Launches October 22 on Nintendo Switch, PS5 and Steam

Published: October 22, 2026
DEMONS' NIGHT FEVER, a Training RTA Simulation RPG, Launches October 22 on Nintendo Switch, PS5 and Steam

DEMONS' NIGHT FEVER, a new game developed by Drecom Co., Ltd. and published by Arc System Works, was released on October 22, 2026.

The game is an unconventional training RTA simulation RPG built around the concept of "enjoying evil" (「悪を楽しむ」). In battle, players use the "Minion Abuse System" (しもべ酷使システム) to blow up their own allied "minions" (しもべ) and fight on. At the hideout (アジト), they can freely train their characters using "Vice Points" (悪徳ポイント), and the more evil they do, the stronger they become. The result is a new kind of dark, exhilarating strategy battle experience.

DEMONS' NIGHT FEVER official website:
https://www.arcsystemworks.jp/demonsnightfever/

DEMONS' NIGHT FEVER opening movie:
https://www.youtube.com/watch?v=QNIGV3wXreo

DEMONS' NIGHT FEVER product trailer:
https://www.youtube.com/watch?v=10rL-RqGm2Y

A Ruthless, New-Style Simulation RPG

In battle, the Minion Abuse System (しもべ酷使システム) has players sacrifice their allied "minions" (しもべ) as they commit all manner of evil.

Ruthless tactics such as "Kill Skill" (キルスキル), which blows up one's own underlings by hand, and "Sacrifice" (生贄) are the shortest route to victory.

The More Misdeeds, the Stronger: Free Training and Upgrades at the Hideout

At the hideout (アジト), players can carry out "Misdeeds" (悪行), "Plunder" (ぶんどり), "Recruitment" (勧誘), "Treasure Hunting" (お宝探し) and "Vice Sublimation" (悪徳昇華).

Players can build up Vice Points (悪徳ポイント) through misdeeds, increase their number of minions through recruitment, and get ready for the battles ahead. Taking an action at the hideout advances the turn.

Within the limited time, players accumulate Vice Points to build a fearsome army all their own.

Gameplay screenshot of DEMONS' NIGHT FEVER showing a large explosion during battle

Gameplay screenshot of DEMONS' NIGHT FEVER showing a skeleton character in a glowing pink attack effect

Gameplay screenshot of DEMONS' NIGHT FEVER showing the hideout screen with five action cards

Gameplay screenshot of DEMONS' NIGHT FEVER showing a story scene with a red-suited hero character and a giant robot

The World Changes with Every Chapter

Each time a chapter's boss is defeated, the game's situation changes dramatically. Players can fully enjoy the thrill of a wide variety of evil deeds, such as "becoming a villainous monster (怪人) and defeating a sentai hero team" or "becoming a witch and beating up a magical girl."

DEMONS' NIGHT FEVER Game Details

Package art for the Nintendo Switch version of DEMONS' NIGHT FEVER

Package art for the PlayStation 5 version of DEMONS' NIGHT FEVER