Smilegate announced on the 6th that mystery adventure Psycho-Sleuth has been launched simultaneously across PC platforms including STOVE and Steam. The game consists of 5 chapters and offers over 20 hours of playtime.
The game was developed by PHOSEPO and co-published by Thermite Games and Smilegate STOVE. The story takes place in a gothic cathedral occupied by a mysterious cult. The plot unfolds as 13 individuals suffering from cognitive disorders are trapped in a death game of "kill without getting caught."
During the deduction process, players must question not only collected clues but also the information they see and manipulate. This is because the culprit interferes with the investigation using "Disease Abilities" derived from cognitive disorders that distort visibility and controls. Obsessive-compulsive disorder (OCD), which causes repetitive thoughts or actions, spatial neglect, which leaves one unable to perceive one side of their visual field, and prosopagnosia, which makes distinguishing faces difficult, serve as these key gameplay devices.
During the phase where the killer is identified, players enter "Debate Mode." Players must evaluate their opponent's statements on the fly, refute them with collected evidence, and uncover contradictions within the statements to expose the real culprit.
Production features include full voice acting for major event scenes, over 40 CG illustrations, 3D backgrounds, and Live2D animation. The original soundtrack also features over 50 tracks.
Prior to its official release, demos were showcased at Steam Next Fest, BIC, Gamescom 2026, and Tokyo Game Show 2026.
