Steam Deck Anti Cheat Explained: Why Multiplayer Games Don’t Work

When considering the Steam Deck for portable gaming, understanding Steam Deck anti cheat compatibility is crucial for many players. While Valve’s handheld PC boasts impressive power and a vast library through Proton, some multiplayer titles, particularly those reliant on robust anti-cheat systems, present compatibility challenges. This can lead to frustration when players discover certain games that don’t work on Steam Deck as expected.

This article explores the technical reasons behind these incompatibilities, identifies major anti-cheat solutions, and highlights specific games that might not run. Understanding these factors will help users manage expectations and make informed choices about their gaming library on the Steam Deck.

Understanding Steam Deck Anti Cheat Compatibility Challenges

The Steam Deck operates on SteamOS, a Linux-based operating system, utilizing Proton to run Windows-native games. This compatibility layer generally works well, but anti-cheat software often operates at a deeper, kernel level, which can conflict with Proton’s translation layer and Linux’s security model.

This fundamental difference is a primary reason why many developers need to explicitly enable anti-cheat support for Proton. Without this specific integration, the anti-cheat system may flag Proton as a potential threat or simply fail to initialize correctly, preventing the game from launching.

The Role of Anti-Cheat Software in Modern Gaming

Anti-cheat software is designed to prevent unfair play in online multiplayer games. It monitors game processes, memory, and network traffic for suspicious activity, such as aimbots, wallhacks, or other unauthorized modifications. For competitive integrity, these systems are a non-negotiable component for many developers.

These tools are crucial for maintaining a fair environment, but their deep integration into the operating system can create hurdles for alternative platforms like the Steam Deck. The security measures intended to stop cheaters can inadvertently block legitimate players on unsupported systems.

Kernel-Level Anti-Cheat and Linux Interactions

Many modern anti-cheat solutions, such as Easy Anti-Cheat (EAC) and BattlEye, operate at the kernel level. This means they have deep access to the operating system’s core functions, allowing them to detect sophisticated cheats. On a Windows system, this integration is seamless.

However, on a Linux-based system like SteamOS, granting kernel-level access to Windows-designed anti-cheat can be complex and poses security considerations. Valve and anti-cheat developers have worked to bridge this gap, but it requires specific implementation by game developers for each title.

Major Anti-Cheat Systems and Their Steam Deck Status

The Steam Deck’s ability to run a multiplayer game often hinges on the specific anti-cheat solution employed by that game. While Valve has collaborated with major anti-cheat providers, developer action is still required for individual titles to function properly.

Understanding which anti-cheat systems are generally compatible, and which still pose challenges, helps identify games that don’t work on Steam Deck due to these protections.

EAC (Easy Anti-Cheat) on Steam Deck

Easy Anti-Cheat (EAC), developed by Epic Games, is one of the most widely used anti-cheat systems. Valve has worked closely with Epic to enable EAC support for Proton, making it relatively straightforward for developers to activate.

• Many games using EAC now function on Steam Deck, provided the developer has enabled Proton support for their specific title.
• Examples of EAC-enabled games that work well include ‘Apex Legends‘ and ‘Elden Ring‘ (for its online components).
• However, simply using EAC does not guarantee compatibility; developer configuration is still essential.

BattlEye on Steam Deck

BattlEye is another prominent anti-cheat service, known for its robust protection. Similar to EAC, Valve has facilitated BattlEye support for Proton, but developers must opt-in for their games.

• A significant number of BattlEye-protected games now run on the Steam Deck, assuming the developer has enabled support.
• Titles like ‘Destiny 2’ famously faced challenges due to BattlEye’s initial incompatibility, but many others have since received updates.
• Players should always verify specific game compatibility, as not all BattlEye titles have enabled Proton support.

Other Anti-Cheat Solutions and Their Impact

Beyond EAC and BattlEye, other anti-cheat systems exist, some of which present greater hurdles for Steam Deck anti cheat compatibility. Some proprietary or less common anti-cheat solutions may not have explicit Proton support, making it difficult or impossible for those games to run.

• Games using older or custom anti-cheat methods are more likely to be among the games that don’t work on Steam Deck.
• Even with a working anti-cheat setup, some games may still have other Linux or Proton-specific issues unrelated to anti-cheat.
• Active development and communication between Valve and anti-cheat providers continue to improve the situation over time.

Identifying Multiplayer Games That Don’t Work on Steam Deck

Despite Valve’s efforts, a number of popular multiplayer games continue to have issues with Steam Deck anti cheat, preventing them from being fully playable. These titles often rely on anti-cheat systems that either lack Proton support or have not been enabled by their respective developers.

Knowing which games fall into this category helps users avoid disappointment and understand the limitations of the Steam Deck for certain competitive experiences.

Popular Multiplayer Titles with Anti-Cheat Issues

Several high-profile games are frequently cited as examples of titles facing Steam Deck anti cheat problems. These games are typically online-only or have significant multiplayer components that are rendered unplayable due to anti-cheat.

• Destiny 2: While technically launchable, its BattlEye anti-cheat will prevent gameplay on SteamOS.
• Fortnite: Epic Games has not enabled Proton support for Fortnite’s anti-cheat, making it unplayable on SteamOS.
• Call of Duty (various titles): Many Call of Duty games use proprietary anti-cheat (e.g., Ricochet) that generally does not support Proton, meaning these are games that don’t work on Steam Deck.
• Valorant: Riot Games’ Vanguard anti-cheat is deeply integrated with Windows and does not support Linux or Proton.
• PUBG: Battlegrounds: While some versions might work, its anti-cheat has historically caused issues on Steam Deck.

How to Check Game Compatibility for Steam Deck Anti Cheat

Before purchasing or attempting to play a multiplayer title, it is always recommended to check its Steam Deck compatibility. Several resources are available to help players determine if a game will run.

• Steam Deck Verified Status: Check the game’s Steam store page for its official Steam Deck compatibility rating (Verified, Playable, Playable, Unsupported).
• ProtonDB: This community-driven website provides detailed reports from users about how specific games perform on Proton, often including notes on anti-cheat status.
• Developer Statements: Game developers sometimes issue official statements regarding Steam Deck or Linux compatibility.
• PCProfile Compatibility Checker: Utilize tools like PCProfile to quickly see if a game is expected to run, including notes on anti-cheat issues and estimated performance.

Why Developers Choose Not to Support Steam Deck Anti Cheat

The decision for a game developer not to enable Steam Deck anti cheat support, even when technically feasible, stems from various factors. These often involve a balance of development resources, security concerns, and strategic priorities.

Understanding these developer perspectives provides insight into why some games that don’t work on Steam Deck remain incompatible despite community demand.

Resource Allocation and Development Priorities

Enabling and maintaining anti-cheat compatibility for Proton requires developer effort. This includes testing, patching, and potentially dedicating resources to support a platform with a smaller user base compared to Windows.

For some studios, particularly smaller ones or those with tight development schedules, allocating these resources might not be prioritized over other features or bug fixes. The return on investment for Steam Deck anti cheat support may not justify the cost for every title.

Security Concerns and Proton Compatibility

Developers and anti-cheat providers are highly sensitive to security vulnerabilities. Ensuring that their anti-cheat system functions perfectly and securely through a compatibility layer like Proton requires rigorous testing.

Any perceived risk of an exploit or a compromise to the anti-cheat system’s integrity could lead developers to delay or decline Proton support. They prioritize a secure and fair environment for the entire player base, which sometimes means limiting access for potentially less-tested platforms.

Bottom line

The landscape of Steam Deck anti cheat compatibility is constantly evolving. While some multiplayer titles remain among the games that don’t work on Steam Deck due to their anti-cheat systems, Valve and anti-cheat providers are continually working to improve the situation. This ongoing effort, combined with increasing developer adoption, means more games are becoming playable.

For players, staying informed about a game’s specific compatibility status is key. Before diving into a new multiplayer experience, consult reliable resources. For quick and accurate compatibility checks, including insights into anti-cheat issues and estimated performance, visit PCProfile today and ensure your Steam Deck gaming experience is seamless.