One designer, one chatbot, about 30 minutes. The Yuji Horii AI game creation experiment is now a free mystery anyone can play.
The Yuji Horii AI game creation story started with a single post. On October 11, 2026, the Dragon Quest creator shared a free browser mystery on X. He said he built it with AI in about 30 minutes. As a result, the post passed 2.5 million views within a day, and fans are split.
Yuji Horii AI Game Creation: What He Released
The game is called Komiya in the Interrogation Room. Moreover, it runs in a browser and costs nothing. Horii linked to it directly from his X account.
According to Kotaku, he spent about 30 minutes making it with Anthropic’s AI tools. In addition, Inven Global reports that the link opens a public Claude Artifact.
Above all, Horii sounded delighted. “Now, with AI, even if you can’t draw, or you can’t program, you can create a game by yourself,” he wrote, in Kotaku’s translation. Then he added: “It’s incredible.”
Komiya in the Interrogation Room: How the Game Plays
First, you play a police officer. Across the desk sits Komiya, a 72-year-old former locksmith. He is a suspect in a pawnshop safe robbery, and he lies constantly.
Therefore, your job is to catch him out. You pick a line of questioning, spot the contradiction and press it with evidence. The table below sums up the rules, based on Inven Global, Kotaku and Gaming.net.
| Element | How it works | Source |
|---|---|---|
| Your role | Police officer running the interview | Inven Global |
| Suspect | Komiya, 72, a former locksmith | Inven Global |
| Case | A pawnshop safe robbery | Inven Global |
| Agitation meter | Rises and falls with your questions | Kotaku |
| Resistance meter | At 100, Komiya stops answering | Kotaku |
| Questions | Six lines of questioning, 20 moves | Gaming.net |
| Rating | Depends on how many lies you expose | Inven Global |
In short, it is a small logic puzzle. However, it has a real loop, a fail state and an ending score.
Yuji Horii Claude AI Adventure: The Tool Behind It
Notably, Horii did not name a model in his post. He only said he made the game by giving instructions to an AI. Still, the link preview on X reads “From claude.ai”.
Claude Artifacts let a user describe an app in plain language. Then the chatbot writes the code and publishes a playable page. Because of this, nobody needs an engine, an artist or a programmer.
Meanwhile, Horii ended his post with a joke. He told readers not to press the boost button. Later, he noted that the button seems to appear only on his own page.
From Portopia on a PC-6001 to a 30-Minute Prompt
The comparison Horii drew is personal. In 1983, he released The Portopia Serial Murder Case for the NEC PC-6001. Back then, he wrote the story, drew the art and did the programming himself.
That adventure became a landmark of Japanese game design. Three years later, Horii launched Dragon Quest. So the contrast is sharp: months of solo work then, half an hour of prompting now.
Interestingly, Portopia has met AI before. In 2023, Square Enix released an AI tech preview based on it. However, fans and critics received it poorly.
Yuji Horii AI Generated Game Splits Fans and Critics
As a result, the reaction came fast. By October 12, the post showed about 19,000 likes and 5,500 reposts. Clearly, the experiment struck a nerve.
Others were far less kind. For example, GamesRadar described the release as part of Horii’s love affair with “AI slop”.
Of course, the debate is familiar. Supporters see a tool that lets one person ship an idea. Critics, on the other hand, see a shortcut that devalues the artists and coders who built the medium.
Dragon Quest X AI Companion and Horii’s Other AI Bets
This is not his first warm word for the technology. In recent months, Horii has said that AI hardly ever makes things up anymore, as Kotaku notes.
Similarly, the series has ties to Google’s Gemini. Dragon Quest X, the Japan-only online game, reportedly added a chatty slime companion powered by that model.
Bigger projects continue in parallel. Horii is writing the scenario for Dragon Quest XII. In addition, G-Mode plans a full Portopia remake for 2027, with Horii as general director. Most studios in Japan already use these tools, as we covered in Japanese game developers generative AI.
Can You Make a Video Game With AI? The Yuji Horii AI Game Creation Lesson
Yes, with limits. A text adventure with meters and branching answers suits a chatbot well. After all, it needs logic and writing, not 3D art or physics.
However, the 30 minutes hide four decades of craft. Horii knew what makes an interrogation tense. Consequently, his prompts carried design choices that a beginner would miss.
So the Yuji Horii AI game creation test proves a narrow point. AI can now turn a clear design into a playable draft very quickly. The design itself still has to come from someone.
Want More on Yuji Horii AI Game Creation?
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Frequently Asked Questions
What is the Yuji Horii AI game creation story?
Dragon Quest creator Yuji Horii released a free browser mystery on October 11, 2026. He said he built it with AI in about 30 minutes, without drawing or programming anything himself.
What is Komiya in the Interrogation Room?
It is a short text mystery. You question Komiya, a 72-year-old former locksmith suspected of a pawnshop safe robbery. Meanwhile, two meters track his agitation and resistance as you expose his lies.
Which AI did Yuji Horii use to make the game?
Kotaku reports that he used Anthropic’s AI tools. In addition, the game is shared as a public Claude Artifact, and the link preview on X reads “From claude.ai”. Horii himself named no model.
Is the Yuji Horii AI generated game free to play?
Yes. Anyone can open the link from his X post and play in a browser. Therefore, no download, purchase or console is needed to try it.
Can you make a video game with AI in 30 minutes?
A small text game, yes. Chatbots can write the logic and publish a playable page quickly. However, larger games with art, sound and physics still take teams and far more time.
Does Dragon Quest use AI?
Partly. Dragon Quest X reportedly added a chat companion powered by Google’s Gemini. Still, Horii’s 30-minute mystery is a personal experiment and not a Square Enix product.
Sources
Kotaku, Inven Global, Gaming.net, GamesRadar, Yuji Horii on X, Wikipedia. *Photos: Yuji Horii (2) by William Tung, CC BY-SA 2.0, resized and placed on a blurred background; NEC PC-6001 by Darklanlan, CC BY 4.0, cropped and resized; game screenshots from Komiya in the Interrogation Room by Yuji Horii, shown for news reporting.*
