Video Game Contracts Quietly Ban AI as Copyright Risks and a 53% Review Crash Reshape the Industry

The video game industry is quietly rewriting its contracts around generative AI — not because of a single law, but because of three converging pressures: copyright law that makes purely AI-generated assets legally unownable, a quantified consumer backlash that cuts a game's early reviews by more than half, and a contractual environment where liability risks are so severe that 'no AI' clauses have become standard. Here is what is happening and what comes next.

'No AI' clauses are now boilerplate

Anti-AI clauses are sweeping through game development and publishing contracts. Corporate IP lawyer Haley MacLean, head of the gaming division at Voyer Law, reports that clauses prohibiting the use of generative AI have gained massive traction, and that 'almost all' of her clients now include them in development and publishing contracts . The rationale is straightforward: generative AI is simultaneously a copyright landmine and a liability risk so severe that it is 'not worth' the exposure .

Publishers may even have a new legal escape hatch. MacLean has warned that Unreal Engine 6's integration of generative AI tools could give publishers legal leverage to void development contracts. Because AI cannot assign copyright, any assets produced by UE6's AI tools would technically lack ownership — potentially violating nearly every publisher agreement she has seen . This creates a perverse incentive: a publisher wanting to exit a deal could point to AI-generated content in the project as a contractual breach .

Platform-level restrictions are also tightening. Valve's Steam has required mandatory AI disclosure labels since 2024, refined in January 2026 . In a notable irony, Epic's own EULA now prohibits using 'NoAI' tagged content as training input for generative AI programs, and its Unreal Editor for Fortnite terms bar Epic from using developer content to train generative AI . These contractual guardrails are reactive: they exist because the underlying copyright framework offers no protection for purely AI-generated output.

You cannot own what AI makes: The copyright problem

The core legal problem is straightforward and well-established. Under U.S. Copyright Office guidance issued in January 2025, 'Copyright does not extend to purely AI-generated material, or material where there is insufficient human control over the expressive elements' . A Reuters legal analysis confirms this position: copyright protection remains available only when humans exercise 'meaningful creative control' through selection, editing, and refinement . The D.C. Circuit affirmed this principle in Thaler v. Perlmutter in March 2025, holding that the Copyright Act requires works to be 'authored in' by humans . Courts and regulators in the EU have reached similar conclusions .

The liability cuts both ways. MacLean and other legal experts note that generative AI places creators in a double bind: they may be liable for copyrighted works the AI used without permission during training, and simultaneously unable to claim ownership of the AI-generated output . If a studio ships AI-generated assets that later prove to infringe, they face direct copyright liability — and because the asset itself is uncopyrightable, competitors can freely copy it .

The 53% review crash: Data on the AI stigma

The consumer backlash now has hard numbers. Market data analyst Ross Burton of Game Oracle analyzed 9,879 paid Steam games released from January to October 2025. After controlling for publisher, developer experience, and genre, games that disclosed AI use received approximately 53% fewer reviews in their first month than those that did not . About 17.9% of sampled games disclosed AI use .

The commercial impact is severe. The drop in reviews — widely treated as a proxy for sales on Steam — translates to some sources estimating 40-60% lower sales for AI-disclosing games . Games with AI labels averaged just 4 reviews in their first month compared to 7 for games without, and nearly 20% of AI-disclosing titles received no reviews at all, versus 15% for non-AI titles .

Epic CEO Tim Sweeney has strongly criticized Steam's mandatory AI disclosure tags, calling them 'irresponsible' and arguing they invite toxic backlash and harm otherwise legitimate productivity tools . Sweeney compared the labels to a modern-day 'Scarlet Letter' .

Predictions of future lawsuits

Lawyers expect the current contractual friction to spill into courtrooms. MacLean directly stated: 'I think we're going to see lawsuits' . The predicted flashpoints include:

• AI training data infringement. A December 2025 ruling by the Higher Regional Court of Hamburg — regarding ChatGPT's use of copyrighted music — is a precedent that could expand to game art, code, and writing
• Unreal Engine 6 contractual disputes. If a publisher voids a development contract citing AI-generated assets as uncopyrightable, a breach-of-contract claim could end up in court
• Union and performer actions. Epic already faced a 2025 SAG-AFTRA lawsuit over AI-mimicked voices . As UE6's generative AI tools expand, more union and individual creator suits are likely
• Broken ownership chains. Because AI cannot assign copyright, any asset created through UE6's AI tools has a broken ownership chain — a risk that 'technically would be in violation of 100% of publisher agreements I have seen,' per MacLean

What this means for the industry

The net effect is an industry that is contractually ring-fencing itself against generative AI even as major engine makers like Epic embed the technology deeper into their tools. The tension between the productivity promise of AI and the legal-commercial risks it creates is the central fault line running through every new game contract today. Studios that use AI tools may save time on asset generation, but they risk voiding their publisher contracts, facing infringement lawsuits, and losing 40-60% of their potential audience. The industry is effectively choosing whether the productivity gain is worth the legal and commercial exposure — and based on the contract language now being written, the answer is increasingly, 'No.'