Linux Crosses 5% Market Share on Steam

Linux has surpassed 5% market share on Steam, marking a notable milestone for the platform in PC gaming.

According to Valve’s Steam Hardware & Software Survey, Linux has exceeded 5% market share on Steam, signaling significant progress for the platform within the PC gaming landscape.

Growth Trajectory

Linux's growth on Steam has shown accelerated momentum in recent years. In June 2025, Linux held 2.57% of the Steam market share, which then rose to 3.05% by October 2025. Its current standing above 5% on the platform highlights this rapid ascent.

Globally, Linux desktop share similarly reached 5% by June 2025, as reported by StatCounter Global Stats. On Steam, these figures specifically represent active gaming sessions.

The Steam Deck's Influence

The Steam Deck, which operates on SteamOS (a Linux-based operating system), is identified as a primary contributor to this market share increase. Steam Deck users are directly categorized as Linux users within Valve’s hardware survey. Valve's strategic investments in infrastructure, particularly through Proton—its compatibility layer enabling Windows games to run on Linux—have also been crucial. Proton's maturity has resulted in thousands of titles achieving "Steam Deck Verified" or "Playable" ratings.

Implications for Developers

A 5% platform share is a threshold that can significantly influence developers. This level of audience engagement often prompts discussions regarding dedicated optimization efforts for the platform. The Deck Verified program, in particular, provides Valve with a clear mechanism to encourage and facilitate compatibility work from developers. Community analysis further suggests that the actual Linux share could potentially be higher, with some estimates ranging between 3% and 10% when considering devices categorized as "Unknown" in survey data.

Future Outlook

Continued Steam Deck sales and ongoing enhancements to Proton are anticipated to fuel further growth for Linux on Steam. The upcoming conclusion of support for Windows 10 may also encourage some users to explore alternative operating systems. Furthermore, potential new hardware from Valve, such as a rumored SteamOS-powered VR device, could contribute to broader Linux adoption. However, challenges persist, particularly concerning anti-cheat compatibility for competitive multiplayer titles, and Windows maintains a significant dominant position on Steam.