S&box

S&box
DeveloperFacepunch Studios
Stable release
26.03.04 / March 4, 2026 (2026-03-04)
Written in
  • C++ (runtime)
  • C# (scripting)
EngineSource 2
PlatformWindows
LicenseMIT License
Websitesbox.game
Repository

S&box (pronounced Sandbox) is an upcoming open source video game development platform and engine by Facepunch Studios. It is built using a heavily modified Source 2 engine and will be officially released in April 2026. S&box is intended to be a spiritual successor to Garry's Mod and is designed to allow users to create a variety of games and experiences.