Billionaire Epic Games CEO Tim Sweeney has criticised Valve’s Steam storefront (what a surprise) once again. The CEO claimed that Steam is currently missing out on billions of dollars in revenue as the digital marketplace doesn’t have access to games like Fortnite, Genshin Impact, and others.

Epic, of course, has its own games marketplace, the often-maligned Epic Games Store, as well as its UEFN Fortnite offering that spaffed a billion dollars on brainrot-style games prior to Epic’s 1,000-person layoffs this year. The storefront, which many dislike, has access to Fortnite as well as gacha games like Genshin Impact, allowing gamers to grab many of the world’s biggest gacha titles through their marketplace instead of standalone launchers.

Sweeney explained that he believes every games publisher will be working together in a “Team Open” scenario. Unreal Engine 6, of course, would be at the core of this with features that allow assets from one game to exist in another. Epic has already announced the blueprint of this Metaverse idea with Fortnite, allowing other UE6 games to use Fortnite skins regardless of their own art styles. (Sounds stupid, right?)

Of course, that requires everyone and every store to play ball, which probably won’t happen. PlayStation would need to work with Xbox, Nintendo might even need to join in, and then Epic and Valve would have to work together after a decade of Sweeney’s constant moaning about the company.

“They have a nice thing going on on PC,” the Epic Games CEO told PC Gamer. “But they reach what percentage of the PC audience? You know, they don’t reach any of the Fortnite [audience], they don’t have Fortnite and Riot’s games and Genshin Impact, and many of the top games in the industry on Steam.”

The Epic CEO claimed that Valve is “missing out on a lot of the opportunity” that storefronts like “Epic has taken, and Microsoft has taken”. All of these platforms, outside of Apple and Valve, have reduced percentages on gacha and free-to-play games as they make so much money. Valve has not. But that might be because Valve simply doesn’t care.

“I think there really is the opportunity to form Team Open,” Sweeney said. “Steam’s got a pretty sweet business—a lot of gamers love Steam—but imagine if you could have Steam on all of the platforms? What if you could have it on iPhone, what if you could have it on Android? What if they carried a lot of games?”

Of course, Steam has a large selection of free-to-play games, just not the big players, but should a private company like Steam have to change tact to appease a small selection of games? After all, Valve’s entire process has been about the openness of PC gaming. PC gamers have the option to move out of Steam and download the launchers for Genshin Impact, Honkai, Wuthering Waves or any other games elsewhere. After all, not every game is available on Epic Games Store, either.