S&box is an in-development sandbox game/engine designed as a sequel to the legendary Garry’s Mod (2006), a game that turned Valve’s Source Engine into a multiplayer playground and content ...

Garry's Mod allows players to pull any asset like characters, items, and locations into a sandbox and create whatever scenario or sequence they can from the tools available.

And it won't be called Garry's Mod 2." There were once some rumblings about Oculus support for Garry's Mod 1.0 before the studio quashed them . Or whatever one does to a rumbling in order to cease it.