The file appears to be a specific development or community-distributed build of s&box (pronounced "sandbox"), the spiritual successor to Garry's Mod developed by Facepunch Studios . Project Overview
Zip files with these naming conventions are frequently shared in developer communities or via "giveaway" systems before the official Steam release. S&Box.Build.10376186.zip
Unlike Garry's Mod (Lua), s&box uses C# for all high-level systems, including the editor, networking, and UI. The file appears to be a specific development
Facepunch recently transitioned the platform to an open-source (MIT license) model, allowing users to modify the engine code via GitHub . including the editor
The official public release on Steam is scheduled for April 28, 2026 . Key Features:
While official public builds are typically managed through Steam's Library tab , numbered builds like often originate from: