Epic's Tim Sweeney renews attack on Valve's Steamworks, calling it a social walled garden

Epic CEO Tim Sweeney claims Steamworks locks PC games into a closed ecosystem. He backed former Epic programmer Kiaran Ritchie's criticism of Steam's 30% revenue cut. An X community note says Steam Datagram Relay works cross-platform if games ship on Steam. The dispute centres on platform economics: bundled services versus pay-per-service backends. Studios face a choice between bundled Steam services and unbundled backends with weaker reach.

Ritchie frames the 30% cut as a tax on bundled services
"It's really sad that the games industry is drained by a 30% tax on gross revenue." - Kiaran Ritchie, former Principal Animation Programmer, Epic Games
Ritchie asks why Valve does not sell Steamworks services individually.
He claims Steam's only remaining value is its network.
He also claims a Steam alternative could be vibe-coded in a week.

Sweeney recasts the pricing debate as interoperability lock-in
"Valve has held gaming back for years by locking developers' PC games into Steamworks' social walled garden where players can't talk to other players on iOS, Android, Xbox, PlayStation, Switch, or even other PC stores." - Tim Sweeney, CEO, Epic Games
The argument shifts from take rate to cross-platform player communication.
This positions Epic's platform-agnostic backend as the structural alternative.
Valve has not responded to the comments.

Valve's documentation narrows the lock-in claim
Steam Datagram Relay routes multiplayer traffic through Valve's network.
It protects players and servers against denial-of-service attacks.
Developers can use it on other platforms if the title also ships on Steam.
Non-Steam players can use it only when developers meet Valve's requirements.
It does not automatically enable cross-platform chat or friends management.

The 30% buys a service stack a rival must replicate
Steamworks bundles multiplayer, matchmaking, achievements and leaderboards.
A competing store must build these services alongside the storefront.
Steam APIs assume a PC-first, Steam-first game, per Steam Hype.
Steam offers no console-first or mobile-first backend alternative.

Epic's unbundled model trades lower fees for weaker distribution
Epic Games Store passes 100% of revenue to developers on the first $1M.
Epic then takes a 12% cut.
Its multiplayer backend is platform-agnostic.
Epic account prompts in Steam games frequently trigger refunds and review-bombing, per Steam Hype.
Developers increasingly report Epic Store sales as too small to justify maintenance.

Pricing and value remain separate questions
Critics can contest the 30% rate while accepting Steamworks delivers real services.
Steam Hype argues Valve could drop to 10% and still earn billions.
Proton, enabling Windows games on Steam Deck and Steam Machine, counts as ecosystem investment.
Steam Hype argues Proton mainly cements Valve's own position.
What this means
For Publishers & Developers: Build cross-play friends and chat on a neutral backend, keeping Steamworks for PC-only features.
For Investors & VC: Add backend-migration cost to diligence on console- or mobile-bound titles built on Steamworks.
For Service Vendors: Pitch platform-agnostic social and networking integration to console-first studios adding Steam PC ports.