Steam on Linux: Record Growth and a Modest April Pullback Explained

In March, Steam on Linux achieved an unprecedented marketshare of 5.33%, fueled by the Steam Deck's popularity and advancements in Proton for Windows game compatibility. However, April data shows a slight retreat, though the platform remains robust. This Q&A covers the key events, causes, and implications.

What sparked the record-high Linux marketshare on Steam in March?

The surge to 5.33%—a 3.1% month-over-month increase—was driven primarily by two factors: the ongoing success of the Steam Deck handheld console, which runs a custom Linux-based OS (SteamOS), and the continued improvement of Steam Play (Proton). Proton is a compatibility layer that allows many Windows-only games to run seamlessly on Linux. As more gamers adopted the Steam Deck and as Proton expanded its game support, the Linux user base on Steam ballooned, shattering the previous all-time high.

What exactly was the March marketshare and how does it compare historically?

In March, Steam on Linux reached 5.33% of all Steam users, a jump from around 2.2% the previous month. This is the highest level recorded in over a decade of Linux gaming on Steam. The previous peak was around 2.5% in early 2020. The 3.1 percentage point increase is the largest single-month gain ever, highlighting the impact of hardware and software improvements tailored to Linux.

What happened in April to cause the pullback?

April’s data shows a slight decline, with the Linux share pulling back from its March record. While exact percentages weren't specified, the drop is described as modest and the platform remains healthy. Such dips are common after a major spike—some of March’s growth may have been due to temporary factors (e.g., promotions, new game releases) or a one-time influx of Steam Deck owners. However, the baseline is still far above pre-March levels, signaling a strong and sustained interest in Linux gaming.

What role did the Steam Deck play in this growth?

The Steam Deck, launched in early 2022, has been a game-changer. Its custom AMD processor and SteamOS 3.0 (based on Arch Linux) provide a console-like experience on a portable PC. As millions of units shipped, many users default to the official OS, which counts toward Linux marketshare. Additionally, the Deck’s success encouraged developers to optimize games for Linux and Proton, creating a virtuous cycle that benefits all Linux gamers.

How does Proton enable more Windows games to run on Linux?

Steam Play (Proton) is a compatibility layer using Wine and other tools to translate Windows API calls into Linux equivalents. Valve regularly updates Proton to reduce bugs, improve performance, and increase compatibility with popular titles like Elden Ring and Cyberpunk 2077. As Proton’s database of playable games grows, Linux becomes a more viable gaming platform, reducing a key barrier to adoption.

What does the April pullback mean for the future of Linux gaming?

The April dip is not a cause for alarm. After any explosive growth, some consolidation is normal. The key takeaway is that Linux share remains elevated compared to its historical average. Continued support from Valve, the release of more Steam Deck variants, and further Proton improvements suggest the long-term trend is upward. The gaming community should watch for future monthly reports to confirm if Linux is establishing a new baseline above 4-5%.

Is the growth in Linux gaming sustainable over the long term?

Sustainability depends on several factors: the Steam Deck’s lifecycle (including a potential model refresh), Proton’s compatibility expansion for new Windows games, and the broader adoption of Linux among PC gamers. Recent trends—like game studios releasing native Linux builds and the rise of SteamOS on other handhelds—point to continued momentum. While it may not grow 3% every month, maintaining a 4-6% share would represent a permanent shift in the PC gaming landscape, challenging the long-standing dominance of Windows.