The Steam Machine, powered by Valve's SteamOS, a Linux-based operating system, faces a significant limitation for prospective buyers: many of the biggest PC games simply will not run on it. This is not due to any hardware weakness—the machine is more than capable of handling these titles—but rather a persistent software incompatibility. The core problem is anti-cheat software. Most modern multiplayer games use some form of anti-cheat to detect and prevent cheating, and the vast majority of these programs are designed exclusively for Windows. Because SteamOS is built on Linux, these games cannot launch, even if they include single-player or offline modes that require an initial anti-cheat check. Installing Windows on the Steam Machine is a workaround, but doing so undermines the device's console-like, Linux-focused appeal.

The Core Issue: Anti-Cheat on Linux

Anti-cheat software operates at a deep level within the operating system. Many modern titles use kernel-level anti-cheat, which requires root-level access and relies on Windows-specific security features. Linux lacks these same security stacks, making it difficult for developers to implement effective anti-cheat support on the platform. Although some anti-cheat vendors offer Linux-compatible solutions, game developers must choose to enable them. Valve had hoped that a large installed base of Steam Machines would incentivize developers to do so, but the device's price and limited availability may prevent that critical mass from forming.

Notable Games Locked Out

A significant number of high-profile games remain unplayable on the Steam Machine due to this anti-cheat barrier. Destiny 2, still popular after its final update, is a prime example. Bungie has repeatedly stated that it will not support SteamOS because of anti-cheat concerns, and with development winding down, that stance is unlikely to change. Fortnite, Epic Games' cultural phenomenon, is also blocked. Epic has cited security risks on Linux as the reason for withholding support, arguing that the platform's openness makes it harder to prevent cheating. Apex Legends previously supported SteamOS but later dropped that support; Respawn grew frustrated with cheaters exploiting the Linux version, and the game now requires Windows. Grand Theft Auto V and GTA Online are similarly affected: an account login check that acts as an anti-cheat gate prevents them from running on SteamOS, even for the single-player campaign.

Many other major franchises follow the same pattern. Modern Battlefield titles, including Battlefield 6, Battlefield 2042, Battlefield V, and Battlefield 1, all use a kernel-level anti-cheat that is incompatible with Linux. Call of Duty games from 2019 onward—such as Modern Warfare (2019), Black Ops Cold War, and subsequent entries—require Secure Boot and employ Activision's in-house kernel-level anti-cheat, making them Windows-only. Riot Games' entire library, including League of Legends, Valorant, and 2XKO, is unplayable because the Vanguard anti-cheat does not support Linux, and Riot does not distribute its games through Steam anyway.

A Glimmer of Hope

Despite this long list of incompatibilities, the situation is not entirely hopeless. Some anti-cheat vendors do provide Linux-compatible versions, and if developers choose to enable them, games could work on SteamOS. However, without a sufficiently large Steam Machine user base to justify the effort, many studios are unlikely to invest in making their titles compatible. For now, the Steam Machine remains a compelling device for Linux-friendly and single-player games, but those hoping to play the most popular online multiplayer titles will need to keep a Windows PC nearby.

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