Two storefronts, two laws

Since an update on January 19, 2026, Valve's Steam AI disclosure policy requires a game to disclose AI-generated content that ships inside the game, meaning art, audio, and dialogue. After that same update, internal-workflow tools such as AI coding assistants used during development no longer require disclosure. The line Valve drew is precise: what the player receives is disclosed, what the team used to build it is not.

The Epic Games Store draws no such line, because it has no AI-disclosure requirement at all. Epic CEO Tim Sweeney, in a June 2026 PC Gamer interview, called Valve's mandatory tag irresponsible and a Scarlet Letter that hurts developers commercially. He argued that to gather wishlists a game must be on Steam, where the tag then attaches and a hater community tries to kill the game.

The label has a price

The tag is not a neutral fact card. One analysis found that AI-tagged Steam games reportedly receive about 53 percent fewer reviews than comparable titles, and reviews are the currency of visibility and trust on the platform. Treat the figure as reported rather than settled, but treat the direction as real: the label reads to a portion of buyers as a warning, not a footnote.

This is why the in-game-content versus internal-workflow distinction is the line that matters. A studio can lean on AI coding assistants throughout development and carry no Steam tag, while a single AI-generated voice line or background image can attach one. The commercial signal is not how much AI you used; it is how much AI reached the player, and Valve has made that difference the trigger.

Platform terms are the real AI rulebook

Storefront policy binds a studio faster than any statute. The EU AI Act phases its obligations in over years; Valve's rule changed what you must declare on a single day in January 2026, and Epic's silence is itself a policy. For a studio owner, the choice of launch platform now quietly encodes a governance decision about how much AI use you are willing to admit to in public.

The responsible move is to make that decision deliberately rather than by default. Decide before you build whether AI-generated content will ship in the game, what that means for a Steam launch, and whether an Epic release changes the calculus. Read the two policies as the operating law they already are, and let your disclosure posture be a choice you made, not one a storefront made for you.

Read next: PEGI Now Age Rates Your Business Model  ·  Ubisoft Barcelona Goes On Strike