Linux crossed 5% of Steam’s user base in March 2026, hitting 5.33% — the largest single-month jump the platform has ever recorded. This post covers Steam Linux Runtime versions, Proton compatibility numbers, Steam Deck contribution, and which distributions Linux gamers run.
Steam Linux Runtime Statistics: Top 5 Numbers
- Linux reached 5.33% of Steam users in March 2026, the first time it crossed 5%.
- Around 106,000 of Steam’s 117,881 games run on Linux through Proton.
- Steam Deck shipments hit roughly 5.6 million units by mid-2025.
- SteamOS Holo holds 24.48% of Linux Steam users, down from 26.42% in November 2025.
- About 89.7% of Windows titles launched on Linux as of October 2025.
What Is the Steam Linux Runtime?
Steam Linux Runtime is Valve’s container system that runs Proton-translated Windows games and native Linux titles inside a controlled environment. It packages a fixed set of libraries so games run the same way across distributions.
The runtime now powers every Proton release plus native titles like Counter-Strike 2 and Dota 2. In March 2026, Valve started putting the Steam client itself inside the container.
Steam Linux Runtime Versions
Valve maintains four runtime versions, each tied to a Debian base. Sniper handles the heaviest workload today, while version 4.0 targets future Proton releases.
| Version | Codename | Debian Base | Proton Support | Key Native Titles |
|---|---|---|---|---|
| 1.0 | Scout | Ubuntu 12.04 | Proton 5.0 and earlier | Older native games |
| 2.0 | Soldier | Debian 10 | Proton 5.13–7.0 | Internal use |
| 3.0 | Sniper | Debian 11 | Proton 8.0+ | CS2, Dota 2, Endless Sky |
| 4.0 | Unnamed | Debian 13.2 | Future Proton | In development |
Source: Valve GitHub (steam-runtime), Phoronix
Version 4.0 skipped Debian 12 entirely and pulled in glibc 2.40, GCC 14, and PipeWire 1.2.2. Most libraries moved to x86_64 only, signaling the end of 32-bit support across the board.
Linux Steam Market Share 2024–2026
Linux’s share of Steam users grew faster in the past 18 months than at any point before. The 2.13 percentage-point jump from November 2025 to March 2026 was the biggest monthly gain ever. Some of that came from Valve fixing a Simplified Chinese language data anomaly that had inflated Windows numbers.
| Month | Linux (%) | Windows (%) | macOS (%) |
|---|---|---|---|
| November 2024 | 2.03 | 96.08 | 1.89 |
| February 2025 | 1.45 | 96.72 | 1.83 |
| October 2025 | 3.05 | 94.84 | 2.11 |
| November 2025 | 3.20 | 94.79 | 2.02 |
| March 2026 | 5.33 | 92.33 | 2.35 |
Source: Valve Steam Hardware Survey
Applied to Steam’s 132 million monthly active users, 5.33% works out to about 7 million Linux gamers. Curious how Linux performs outside gaming? Check out the Linux desktop market share trends for the full picture.
How Many Games Run on Steam Linux Runtime?
Proton expands the Linux catalog from 9,000 native titles to roughly 106,000 playable games — a 12x jump. ProtonDB reported in October 2025 that about 89.7% of Windows titles now launch on Linux, with 42% of new releases earning Platinum ratings.
| Metric | Figure | Date |
|---|---|---|
| Total Steam games | 117,881 | November 2025 |
| Native Linux builds | ~9,000 | November 2025 |
| Playable via Proton | ~106,000 | November 2025 |
| Deck Verified / Playable | 21,694 | November 2025 |
| Platinum-rated new releases | 42% | October 2025 |
| Borked-rated games | ~3.8% | October 2025 |
Source: Boiling Steam, ProtonDB, Valve
Anti-cheat middleware like Easy Anti-Cheat and BattlEye accounts for most of the remaining 10%. Proton 11.0 Beta 1 in April 2026 added playability for X-Plane 12 and Dino Crisis after rebasing on Wine 11.0.
Steam Deck Sales and Playtime
The Steam Deck drives most of Linux’s Steam growth. IDC put shipments at around 5.6 million units by mid-2025, with the device taking 48% of handheld gaming PC shipments in 2024.
| Metric | Figure | Period |
|---|---|---|
| Units shipped | ~5.6 million | By mid-2025 |
| Share of handheld PC shipments | 48% | 2024 |
| Total playtime logged | 330 million hours | 2024 |
| YoY playtime increase | 64% | 2024 vs 2023 |
Source: IDC
Every Steam Deck registers as a Linux user with an AMD CPU in Valve’s hardware survey. That’s why AMD chips show up in 70% of Linux gaming systems versus just 39% on Windows.
Linux Distribution Breakdown for Steam Users
SteamOS Holo leads but is losing ground inside the Linux user base. Its share dropped from 26.42% in November 2025 to 24.48% by March 2026 as desktop Linux distros grew faster.
| Distribution | Share (March 2026) | Change |
|---|---|---|
| SteamOS Holo | 24.48% | +0.65% |
| Arch Linux | 8.78% | -0.29% |
| Linux Mint 22.3 | 6.90% | +0.28% |
| Ubuntu Core 24 | 3.58% | -0.24% |
| Linux Mint 22.2 | 1.90% | -0.69% |
| Ubuntu 25.10 | 1.67% | +1.67% |
| Manjaro Linux | 1.45% | +1.45% |
Source: Valve Steam Hardware Survey (Linux only)
Gaming-focused distros built on Arch and Fedora picked up share through late 2025. CachyOS hit 6.74% in November 2025 with a 0.73% monthly gain, while Bazzite grew 1.29% to 5.53%. Compare these gains with the broader most popular Linux distributions ranking for context.
What’s Behind Steam Linux Runtime Growth in 2026?
Three things are pushing the numbers up. The Steam Deck keeps adding Linux users at hardware scale, since every unit ships with Linux. Windows 10 hit end of support in October 2025, and Windows 11’s TPM 2.0 requirement locks out millions of older PCs.
Zorin OS reported over 780,000 Windows users switching to Linux around that deadline. Regional patterns from Linux adoption by country show how this shift varies by market.
The runtime itself keeps getting better. The Debian 13.2 jump, the 64-bit client beta, and steady Proton releases all cut friction for new users. Valve has shipped thousands of patches to the Linux kernel and Mesa drivers to keep this moving.
FAQs
What percentage of Steam users run Linux in 2026?
Linux reached 5.33% of Steam users in March 2026 according to Valve’s Steam Hardware Survey. This was the first time the platform crossed 5%, jumping 2.13 percentage points from November 2025 — the biggest single-month gain ever recorded.
How many games work on Linux through Proton?
Around 106,000 of Steam’s 117,881 games run on Linux via Proton as of November 2025. ProtonDB data shows 89.7% of Windows titles launch on Linux, and 42% of new releases earn Platinum ratings (perfect compatibility without tweaks).
How many Steam Decks have been sold?
IDC estimates roughly 5.6 million Steam Deck units shipped by mid-2025. The device took 48% of handheld gaming PC shipments in 2024, with users logging 330 million hours of playtime that year — a 64% jump over 2023.
Which Linux distribution is most popular for Steam?
SteamOS Holo leads with 24.48% of Linux Steam users in March 2026, followed by Arch Linux at 8.78% and Linux Mint 22.3 at 6.90%. Gaming-focused distros like CachyOS and Bazzite have grown fastest among desktop users.
What is the latest Steam Linux Runtime version?
Steam Linux Runtime 4.0 shipped in November 2025, jumping from Debian 11 to Debian 13.2 and skipping Debian 12 entirely. It includes glibc 2.40, GCC 14, OpenSSL 3.4, and PipeWire 1.2.2, with most libraries now x86_64 only.
Sources
Valve Steam Hardware Survey
ProtonDB Compatibility Database
Phoronix
GamingOnLinux
