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Linux Breaks Past 5% on Steam for the First Time, More Than Doubling macOS

Linux surged to 5.33% in the March 2026 Steam Hardware Survey, crossing the 5% threshold for the first time. We break down the growth drivers — SteamOS, Steam Deck, and Proton — and the caveats behind the numbers.

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kkm

Backend Engineer / AWS / Django

2026.04.045 min2 views
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Linux surged to 5.33% in the March 2026 Steam Hardware Survey, crossing the 5% threshold for the first time. We break down the growth drivers — SteamOS, Steam Deck, and Proton — and the caveats behind the numbers.

Valve's March 2026 Steam Hardware & Software Survey shows Linux reaching 5.33% market share — the first time it has ever crossed the 5% threshold on the platform.

That's more than double macOS at 2.35%. Windows still dominates at 92.33%, but dropped 4.28 percentage points month over month. Multiple outlets including GamingOnLinux and KitGuru are calling it a "historic milestone."

March OS Share at a Glance

The Steam Hardware Survey collects system configuration data from PCs running the Steam client each month. Here are the March numbers.

OSMarch ShareMoM Change
Windows92.33%-4.28pt
Linux5.33%+3.10pt
macOS2.35%+1.19pt

Within Windows, Windows 11 climbed to 66.85% (+10.57pt) while Windows 10 plummeted to 25.36% (-14.89pt). With Windows 10 support ending in October 2025, users are migrating both to Windows 11 and to Linux simultaneously.

Why It Nearly Doubled in Three Months

Linux first crossed 3% in October 2025 and had been climbing gradually. In March, it jumped straight to 5%. Several factors explain the surge.

SteamOS and the Steam Deck are the single biggest driver. Within the Linux install base, SteamOS Holo accounts for 24.48%, meaning roughly one in four Linux gamers on Steam is using a Steam Deck or SteamOS device. The Steam Deck has sold approximately 4 million units according to IDC estimates, capturing about half the handheld PC market.

Proton's improving compatibility continues to matter. Valve's Wine-based compatibility layer "Proton" now runs over 80% of Steam games on Linux, with ProtonDB data suggesting roughly 90% work in some form. Titles with kernel-level anti-cheat like Valorant and Fortnite still don't work, but the vast majority of games run with zero configuration.

Windows 10's end of support is an accelerator. After Windows 10 reached end of life in October 2025, users with hardware that doesn't meet Windows 11 requirements are increasingly turning to Linux rather than buying new PCs. An estimated 40% of Windows 10 machines can't upgrade to Windows 11, creating millions of potential Linux converts.

Linux Distribution Breakdown

Looking inside the 5.33% reveals the diversity of desktop Linux beyond SteamOS.

DistributionShare of Linux
SteamOS Holo24.48%
Arch Linux8.78%
Linux Mint 22.36.90%
Ubuntu Core 243.58%

Since SteamOS is Arch-based, combining SteamOS and Arch Linux means roughly a third of Linux gamers are on an Arch derivative. Desktop distributions like Linux Mint and Ubuntu remain well-represented, suggesting growth is coming from both "started Linux for gaming" and "already on Linux and started gaming" demographics.

Caveats Worth Noting

The March figure comes with a few important asterisks.

First, February's numbers were likely depressed. As GamingOnLinux notes, Chinese New Year in February tends to concentrate survey responses from Chinese players, who overwhelmingly use Windows. That push inflates Windows' relative share in February, making the March rebound look larger than it is.

Second, two unidentified distributions together account for 25.61% of Linux installs. GamingOnLinux suggests this may be a data-collection bug related to the new 64-bit Steam client, and warns that "we may end up seeing some corrections this month."

Even with these caveats, the underlying growth trend is real. Going from 3.05% in October 2025 to 5%+ in six months reflects structural forces — SteamOS, Proton, and Windows 10 end of life — rather than a one-time blip.

What Comes Next

Valve is doubling down on Linux gaming hardware. The upcoming Steam Machine, expected in 2026, is a compact SteamOS-powered PC for the living room, promised to deliver roughly six times the performance of a Steam Deck. The simultaneously announced "Steam Frame" is an all-in-one gaming PC, also running SteamOS.

SteamOS 3.8, released in March, added preview support for Steam Machine hardware alongside updated graphics drivers, external HDR/VRR display support, and a new "Memory Power Down" option for better battery life.

At the broader desktop level, StatCounter puts Linux at roughly 4.7% globally. The methodologies differ from Steam's survey, but both point upward. As long as Steam Deck sales continue, Proton keeps improving, and Windows 10 holdouts keep looking for alternatives, there's no obvious reason for this trajectory to reverse.

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