Facepunch Studios are developing a sequel to Garry’s Mod, according to Garry Newman.
Speaking in an interview with PCgamesN, Newman said the project is in the “early days,” and the team is ” looking at having more VR stuff in it.”
He also said it won’t be called Garry’s Mod 2, so there’s that as well.
Newman didn’t divulge any further details on the sequel, but you should give the entire interview a go. Newman talks about the development of Garry’s Mod, its popularity, and how pleased he was that people actually bought it. It’s a rather good read.