Facepunch Studios has confirmed it has signed a new licensing agreement with Valve that allows developers to export full standalone games from the s&box editor and release them on Steam, completely royalty free. The announcement was made by Facepunch founder Garry Newman in the latest s&box development update post.
“We signed the new license with Valve this week,” Newman wrote, “allowing us to allow people to export games from s&box’s editor and ship them as standalone games on Steam completely royalty free. This has been a bit of a complicated journey, but with a lot of reassurance and compromises, we’ve got there.”
The news resolves a licensing situation that has been in the background of s&box’s development for some time. As a game engine built on Valve’s Source 2 technology, any commercial use of the engine required a formal agreement with Valve covering how that technology could be distributed.
What It Means for Developers
The short version: if you build a game in s&box, you can now release that game as a standalone product on Steam without paying royalties to Facepunch or Valve. That is a meaningful proposition for small developers who have been building within s&box’s ecosystem and want a commercial exit beyond keeping the game inside the s&box launcher.
The longer version is that there is still work to do. As Newman acknowledged, Facepunch needs to create its own license covering the relationship between Facepunch and the developers shipping standalone games, and the whole arrangement needs additional legal review before it goes live. “I wanted to share this progress with the community so they know that Valve did the bizzo,” he wrote.
The first game expected out of the pilot programme is ‘My Summer Cottage’, which will be one of a select group of projects chosen to test the standalone release pipeline before it opens more broadly.
s&box’s Growing Ambitions
S&box, the spiritual successor to Garry’s Mod, has been building momentum quietly. In November last year the game went open source, with community contributors submitting cross-platform improvements directly to the codebase. That move, combined with this licensing breakthrough, positions s&box as something more interesting than a Garry’s Mod sequel: it is now a legitimate, free, community-developed game engine with Source 2 underneath and a built-in distribution platform in Steam.
The comparison to Roblox and Garry’s Mod is the obvious one: s&box creates an environment where player-made content exists alongside more developed standalone releases. The difference is the commercial layer. Roblox’s creator economy involves revenue sharing within Roblox’s own platform. S&box now offers something closer to a full development pipeline: build in s&box, release on Steam, keep the revenue.
Proton Compatibility Will Matter
S&box is listed on Steam with a target release in April 2026. One question that will matter for the Linux gaming community is how well the game and its standalone exports work under Proton, Valve’s compatibility layer for running Windows games on Linux.
Given that Valve has been directly involved in the licensing discussions and has a clear interest in growing the Steam ecosystem, it would be surprising if Proton compatibility were treated as an afterthought. But it will be worth watching when the first standalone releases arrive.
For anyone who grew up with Garry’s Mod and wondered what a properly resourced spiritual successor might look like, s&box is starting to answer that question seriously.
