AI Video Game Mashups Are Going Viral, but Do They Cross the Line Into Copyright Infringement?

AI-powered video game mashups are spreading across social media, combining titles such as Minecraft and Elden Ring or Spider-Man and Batman: Arkham Knight. But as these experiments showcase AI-assisted modding, they raise a legal question: could recreating or combining elements of existing games amount to copyright infringement?

One example makes it appear as though firing a bow in Minecraft causes Steve to shoot an arrow in Elden Ring. Yet the effect may be closer to an elaborate visual trick than a genuine merger of the two games.

According to Video Games Chronicle (VGC), the reported technique involves using Anthropic's Claude Opus 5.5 to decompile two games and run them simultaneously. Elements from one game are then overlaid on the other, with actions seemingly synchronised between them. VGC compares the effect to a green-screen trick rather than characters being fully integrated into the second game.

That distinction matters because copyright concerns depend on what material is reproduced, not simply whether two games appear together.

Could AI Game Mashups Violate Copyright Law?

UK copyright law generally protects creative expression rather than ideas and concepts themselves. Reproducing protected character models, textures, animations, or substantial parts of a game's code without permission could raise concerns. Combining gameplay ideas alone, however, does not automatically establish infringement.

UK law also permits certain forms of decompilation under specific conditions, but those provisions do not provide blanket permission to copy or reuse protected game material. The legality depends on the circumstances and the material involved.

The available reporting does not establish precisely which assets or code each clip reproduces, or whether original files or other protected material are reproduced or distributed. Without those details, a definitive verdict on the individual videos is not possible.

The UK Government's Report on Copyright and Artificial Intelligence, published in March 2026, examines copyright issues arising from AI development. However, it does not establish whether these particular mashups are lawful.

UK law also recognises limited fair dealing exceptions for purposes including criticism, review, parody and pastiche. These have specific requirements and do not grant blanket permission to reuse copyrighted material simply because a project is experimental or AI-assisted.

Why AI Game Mashups Are Facing Backlash

Beyond the legal uncertainty, some modders fear the trend could reward shortcuts at the expense of the skill involved in creating modifications.

Kingdom Hearts modder Discount Mods said on X they were considering abandoning modding if low-quality AI projects became the norm. 'I don't wanna be involved in an AI slop factory,' they wrote.

Developer Kran, who said they also use AI tools when creating mods, criticised the mashups for offering little creative input beyond selecting two games to combine. They acknowledged AI's potential in modding but questioned why simplistic experiments were attracting attention.

The dispute reflects wider concerns about whether AI should support skilled developers or displace creative work. Critics have also questioned the quality and maintainability of AI-generated code, particularly when users may struggle to identify or fix technical problems.

What the Viral Videos Mean for Game Developers

The mashups demonstrate the possibilities of AI-assisted experimentation, but their popularity does not establish their legality. Ultimately, the copyright question depends on what each project reproduces, how that material is used, and whether permission or a relevant legal exception applies.