Two chapters have been publicly confirmed in detail, and they are structured in a way that suggests a game with more of them. Here is what is known about each.
The demo released on September 24, 2025 and contains the prologue plus Chapter 1, running one to two hours. All thirteen characters are present in the demo, which makes it a genuine preview rather than a vertical slice.
The Overture. The body on the floor has three evidence categories: wound traces, powder, and the victim's note. Each character gets two rounds of dialogue. The scene divides into a ventilation duct situation and a close-quarters one — a deliberate pairing, since the duct is a hiding problem and the close-quarters is a perception problem.
The debate runs four rounds and ends in 認知干擾 (cognitive interference). After that, a report-versus-verify choice branches into a side CG. Finishing the chapter unlocks the 大廳檔案庫 (Hall Archive).
Distorted Testimony. The chapter runs on memory fragments that restore testimony the cult tampered with. The contagion is now active: it adds symptoms to characters, which adds new dialogue. A clue on the hall bulletin board opens the second half of the chapter.
The debate again runs four rounds, ending in memory rewriting. Three failures produce the 集體誤判 (collective misjudgement) bad ending. The chapter closes on publish versus keep private to your sister, and unlocks the 病能百科 (Madness Encyclopedia) — which is where the disorder reference material lives.
The full game runs about 1,200 minutes against roughly two chapters of confirmed structure, so there is considerably more of it — later chapters, further disorder escalation, more endings — that the public material has not yet detailed. The demo covers the prologue and Chapter 1, which is the cheapest way to close that gap yourself. If you write up what happens later, this is the page to send it to.