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Byounou Tantei

Byounou Tantei is out on PC. On Steam it held a Very Positive rating four days after its November 5, 2026 launch, with more than 450 user reviews and 91 percent positive.

Synthesized from 2 Yomimono stories · updated 1h ago

Byounou Tantei released on November 5, 2026 for PC through Steam, the Epic Games Store, and STOVE. Indie studio PHOSEPO developed it, with Thermite Games and Smilegate publishing. The premise is a death-game mystery built around 13 Byono-sha, patients whose cognitive abnormalities create murder tricks, and the deduction turns on evidence that can be transmitted from one suspect to another and distort what witnesses perceive.

The Steam standard edition costs 2,800 yen and the Deluxe Edition 5,035 yen. A two-week launch sale cut 10 percent from the standard edition and 15 percent from the Deluxe Edition.

Four days after launch, the Steam rating stood at Very Positive: more than 450 user reviews, 91 percent of them positive. That threshold usually decides whether a Steam release keeps selling past launch week. The early record rests on review volume and rating, and the launch storefronts are the only confirmed platforms.

Key facts

Release date
November 5, 2026 ↗
Platforms
PC via Steam, Epic Games Store, and STOVE ↗
Developer
PHOSEPO ↗
Publishers
Thermite Games and Smilegate ↗
Steam standard edition price
2,800 yen ↗
Steam Deluxe Edition price
5,035 yen ↗
Launch sale
10 percent off standard edition, 15 percent off Deluxe Edition for two weeks ↗
Premise
13 patients with cognitive abnormalities enter trials where an unseen murder makes the killer a god ↗
Steam rating
Very Positive, with more than 450 user reviews and 91 percent positive ↗

Timeline

Written with AI from the cited Yomimono stories below, each itself sourced. See our editorial policy. Every fact links the story it came from.

Facts

Release
game · 2026-11-05 · PC · 2026-11-05
Licensed by
Steam (PC) · 2026-11-05
Licensed by
Epic Games Store (PC) · 2026-11-05
Licensed by
STOVE (PC) · 2026-11-05
Noted
Set around 13 Byono-sha whose cognitive abnormalities create murder tricks. · 2026-11-05

Connections

Structured graph also available as JSON at /public/entities/byounou-tantei. CC BY 4.0.

All coverage

1h ago

Psycho-Sleuth Reaches Very Positive On Steam Four Days After Launch

Psycho-Sleuth launched on Steam on November 5 and held a Very Positive rating by November 9, with more than 450 user reviews and 91 percent of them positive. The death-game mystery adventure from developer PHOSEPO, published by Thermite Games and Smilegate, sends 13 patients with cognitive abnormalities into trials where an unseen murder makes the killer a god.

3d ago

Byono Detective Launches on PC With 13 Cognitive Ability Users

Thermite Games and Smilegate released the PC mystery adventure Byono Detective on November 5, 2026, on Steam, Epic Games Store, and STOVE. The Steam standard edition costs 2,800 yen, the Deluxe Edition 5,035 yen, with a two-week launch sale of 10 percent and 15 percent off. Indie studio PHOSEPO developed the game, set around 13 Byono-sha whose cognitive abnormalities create murder tricks.