Cutting corners: Steam has faced much criticism over its relatively lax content moderation. Some have accused many games of simply trying to flip collections of free Unity and Unreal Engine assets for a quick buck. But one title appears to take the strategy to a new extreme by trying to sell someone else's free-to-download project.

An indie developer has accused a game on Steam of being an exact copy of a demo he released for free earlier this year. The sellers responded with claims of their own and a copyright strike against the developer's YouTube video showcasing the demo.

In April, developer Tyson "TJ ATOMICA" Butler-Boschma released a simple Unreal Engine 5 demo on in which players use a legally distinct Superman-like character to fly through a generic urban environment. Using Epic's free assets, including the city from the Matrix Awakens demo, Boschma released the project as a simple proof-of-concept for a next-generation superhero game.

An identical-looking game from Hero Game Studios called "Heroes City Superman Edition" appeared on Steam in early November, initially for $35 but later for $11.

The title's Steam page promised a long list of ambitious upcoming features like multiplayer, vehicles, character customization, and the ability to travel to different planets.

After buying and playing the game, Boschma declared it a fraudulent attempt to sell his demo. While anyone could theoretically use the same free Unreal Engine assets to build a similar project, he confirmed that the game's written messages and cape physics are identical to his work.

Hero Game Studios claimed Boschma is a former member of their team who raised his accusations against the game for money, which he flatly denies. They also filed a copyright claim against Boschma's YouTube videos of the demo released back in April. Other channels like Gameranx (embed above) and IGN also have videos of the project from around that time. Heroes City, however, only has a Twitter account dating back to September.

The listing for Heroes City has disappeared from Steam, likely due to Boschma's DMCA claim. However, the fact that it passed through Valve's certification process and appeared on Steam for two weeks is somewhat alarming.

The case shows that potentially any work available for free without DRM could be copied and sold on a major storefront without the original developer's consent. Some small developers might not have the resources to fight such scams.