Yuji Horii, creator of Dragon Quest, experiments with generative artificial intelligence by creating a detective adventure in just 30 minutes.
Yuji Horii, the celebrated creator of the Dragon Quest video game series, demonstrated the potential of generative artificial intelligence by making a video game in about half an hour. The experiment was shared on October 11, 2026, through his profile on the social network X, accompanied by a reflection on the changing landscape of creative technologies.
Horii, 72, created a text-based investigative adventure titled 'Interrogation Room Komiya' simply by providing instructions to an artificial intelligence system. The game, accessible via browser with a Japanese interface, puts the player in the role of a detective who must obtain a confession from a suspect within two virtual hours, before the arrival of their lawyer.
The project utilizes Claude, the artificial intelligence system developed by Anthropic, through capabilities that can generate applications from written instructions. The experiment shows how creating a playable prototype has become much more accessible, even for those without a background in computer science.
Yuji Horii is a historic figure in the Japanese video game industry, best known for creating Dragon Quest in 1986, one of the most important role-playing game series in history. In 1983, Horii personally developed The Portopia Serial Murder Case, a detective adventure for which he handled the story, artwork, and programming—a process that required deep technical skills and months of work.
More than forty years later, the same creator has been able to experience a radically different approach to video game development thanks to the evolution of generative artificial intelligence. This technology allows written instructions to be transformed into interactive products without the need to know programming languages, drastically reducing the time and expertise required.
Horii’s experiment is part of a broader trend exploring the creative potential of AI in the gaming industry, which could benefit students, independent creators, and aspiring developers interested in quickly testing their ideas, tangibly changing the relationship between imagination and practical implementation.
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