Yuji Horii Releases Short AI-Made Adventure Game Komiya in the Interrogation Room
Horii, the creator behind The Portopia Serial Murder Case and Dragon Quest, used the same suspect name from Portopia in a game he says he built in about 30 minutes by directing AI, which puts a veteran adventure game designer's own workflow behind the claim that instruction alone can yield a playable game.
Reporting from 1 source: Game Spark.
Yuji Horii released the short adventure game Komiya in the Interrogation Room on October 11, 2026. Players act as a detective interrogating an old man named Komiya, a suspect in a safe burglary, and must prove he is the culprit within the visiting time by exposing contradictions between his testimony and the evidence. Horii said production took about 30 minutes and that giving instructions to AI can produce a reasonably good game. It clears in about 5 to 10 minutes and runs in various browsers.
The suspect is an old man named Komiya, the same name carried by a character in The Portopia Serial Murder Case. Players work through his testimony, compare it against the evidence, and press on the contradictions until the case comes apart. The visit has a time limit, and presenting the decisive evidence is what pushes Komiya toward a confession.
Testimony can be reread, and the whole thing runs about 5 to 10 minutes. Horii said he was surprised that giving instructions to AI produced a reasonably good game by itself, and that production took only about 30 minutes. It plays in various browsers.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.