Indie developer Michael Kamm has publicly accused MiHoYo of copying his puzzle game Ouros into Zenless Zone Zero, presenting side-by-side video evidence that highlights a series of granular design similarities. In a message posted to social platforms in May 2026, Kamm explained that the puzzle was added to Zenless Zone Zero in 2025, but he only came forward after community members mistakenly accused him of copying the larger studio's work. “Because MiHoYo is an established billion-dollar company, and Ouros isn't well known, I can see why people would assume that I copied them,” Kamm said in the video. “But still, it's frustrating to have your work cloned and then credited to somebody else.”

Specific similarities and prior work

The comparison video focuses on more than broad genre resemblance. Kamm points to matching mechanics such as curve manipulation gameplay, “curve portals” that teleport a ball along a track, an identical hint system, a reverse-direction control, and even a hazy flowing background present in both games. When some observers suggested Ouros resembled the 2023 online game Primo, Kamm countered that Primo itself appears to be a copy of Splines 'n Shapes, a Ludum Dare game jam project he created in 2020. The exchange underscores how quickly attribution can become tangled when smaller titles predate more visible releases.

A pattern of disputed originality

This incident is not isolated. Earlier in 2026, Pipapo Games accused MiHoYo of copying its upcoming cartography game Map Map for Genshin Impact. Although Map Map had a demo available on Steam for about a year, the studio noted the frustration of seeing a major publisher adopt a similar concept close to release. Such disputes illustrate the asymmetry between indie developers and large studios: while game design ideas are difficult to copyright, only well-funded publishers typically have the resources to pursue legal remedies.

Kamm has not announced any legal action. His stated goal is simply to set the record straight about origins and credit. PC Gamer has reached out to both Kamm and MiHoYo for comment and will update this story upon receiving responses.

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