Epic Games CEO Tim Sweeney criticized Valve’s Steamworks ecosystem on October 27, 2026, arguing that its social boundaries make it harder for players to connect across platforms.
His remarks prompted an important technical question: does using Steamworks prevent a game from connecting people outside Steam? Valve’s own documentation shows that the answer is more qualified than a viral headline suggests.
What Sweeney argued
In a post on X, Sweeney said Valve had “held gaming back for years.” He characterized Steamworks as a closed social environment separating players on Steam from those using rival stores, consoles and phones.
GamesRadar+’s account of the exchange links to Sweeney’s post. The discussion followed criticism of Steam’s revenue share by former Epic programmer Kiaran Ritchie.
Sweeney’s broader judgment about Valve’s effect on gaming is an argument from a competitor, rather than an established technical finding.
Steamworks is a collection of features
Valve’s Steamworks overview describes tools for matchmaking, achievements, cloud storage and other functions. Developers can choose how many of those features to use.
That matters because publishing a game on Steam should not be confused with an obligation to use every Steamworks service.
A game’s online design also involves separate questions: how people identify themselves, discover friends, join a match and communicate. Solving one does not automatically solve the others.
Valve documents cross-platform networking, with conditions
Steam Datagram Relay documentation says players on other stores and platforms can generally access the relay network if a game meets specified conditions.
Those include shipping a Steam version, supporting necessary updates and providing a service that can issue authentication credentials. Valve also cautions that cross-platform support may not be available to every partner or game.
In plain language, the relay transports game traffic. Its cross-platform availability does not establish that Steam’s friends lists or social chat become a universal system.
What players can take from the dispute
Two claims deserve separate treatment. Valve provides networking technology that can support connections beyond Steam. Sweeney argues that Steam-centered social services still create barriers.
The documentation supports the first statement without settling every part of the second.
For a player deciding where to buy a multiplayer game, the useful question remains specific: does that game support playing and communicating with friends on the platforms they use? A storefront argument alone cannot answer it.