AI Plagiarism: Clone Game Released Before Original, Threatening Indie Developers

A troubling instance of plagiarism, facilitated by generative artificial intelligence, has ignited a widespread debate within the independent game development community, particularly in Japan. Indie developers, often at the forefront of adopting new technologies, find themselves uniquely vulnerable to the risks posed by such advancements.

At the center of this controversy is Unityroom, a popular online portal where amateur and professional developers can freely publish games created with Unity, making them playable directly in a browser. The platform also offers the possibility for creators to earn modest revenue from advertising. It was on Unityroom that a game appeared, strongly suspected of being an AI-generated copy of another title, a situation that has provoked considerable indignation.

A Troubling Precedent

The incident revolves around Japanese indie developer and YouTuber, Kamaboko, who had been diligently working for weeks on "Typing Magician," a typing game that incorporates tower defense mechanics. Since late February, Kamaboko had publicly documented the project's progress on YouTube, offering regular updates, showcasing gameplay, and detailing both implemented and planned features.

Shortly after Kamaboko began sharing these development updates, another user, identified as Kamaboko Kōsatsu Kōsatsu – with no apparent connection to the original creator – published a game on Unityroom. This game bore the identical title and displayed striking similarities to Kamaboko's still-incomplete project. The clone quickly gained significant visibility, accumulating approximately 30,000 views and landing a spot among the platform's 'popular new releases.'

Perhaps the most contentious aspect of this situation is the copier's own admission. In a YouTube video, the user openly stated that they created the game in roughly two hours, utilizing a generative AI model that had been fed Kamaboko's public development videos. They boldly claimed that "video game development is incredibly easy" and "can be done with a skill level comparable to a part-time job at a convenience store." The user further described their product as a "complete copy of Kamaboko's project," while simultaneously arguing that ideas are not protected by copyright. They framed their actions as a form of "revenge" for Kamaboko's alleged past plagiarism (now reportedly removed) of popular franchises like Pokémon and Palworld.

Regardless of the personal motivations behind this act, the episode has generated considerable alarm among Japanese developers and the global indie community alike. The fact that a development project can be so swiftly replicated and published – even before the original is completed – establishes a deeply disturbing precedent in the era of generative AI. While the specific legal ramifications remain ambiguous, the practice has been widely and unequivocally condemned as unethical.

Ultimately, such occurrences could severely undermine the entire independent game development scene. Indie creators often rely on transparent and open communication with their player base, a stark contrast to the more guarded approaches of larger AAA studios. In essence, generative artificial intelligence appears to disproportionately impact the most vulnerable creators, a concerning pattern that has been observed in various creative fields on multiple occasions.