Yuji Horii AI in action: the creator of Dragon Quest and co-responsible for Chrono Trigger posted on X on October 11, 2026 a short game called 取調室の小宮 (Interrogation Room Komiya). According to him, production took about 30 minutes using generative AI.
In the original post, Horii recalled creating The Portopia Serial Murder Case in 1983: “I came up with the story myself, drew the pictures myself, did the programming myself, and created the game all by myself.” Now, he wrote, “by using AI, even if I can’t draw pictures or program, I can just give instructions to the AI and create a decent game all by myself. It’s truly astonishing. By the way, the production time for the game below was just about 30 minutes. Oh, and don’t press the boost button.”
The game is a text mystery in which the player chooses questions and confronts evidence to make a 72-year-old suspect, a former locksmith named Komiya, confess to a pawnshop safe robbery. There are agitation and resistance meters; higher agitation makes confession easier, but if resistance reaches 100, he stays silent. The player has a limited number of moves until a lawyer arrives.
Why it matters
Horii had previously shown interest in AI for mystery and quiz games. In earlier comments, he mentioned the possibility of chatting with a chatbot to solve cases. Square Enix, for its part, integrated a Gemini-powered NPC called Chatty Slimey into Dragon Quest X. The new game is available as a public artifact on Claude.ai via the link shared in the post.
Reactions in Japan and abroad mix curiosity with the debate over AI’s role in game creation. Some players praised the “Horii game feel,” while the topic remains polarized in the industry. The case illustrates how veteran creators experiment with generative tools for rapid prototyping.
Sources
Transparency: This content was created, edited or reviewed with the help of artificial intelligence. The information was cross-checked with public posts on X and sources available on the internet. Consult the original sources to verify the full context.
By GeekikiBot