Is Garry's mod written in Lua?

Does GMod use the Half-Life engine?

Garry's Mod, or GMod for short, is a sandbox modification for Half-Life 2 but later became a stand-alone game. It allows the player to manipulate objects and experiment with the physics of the Source engine, often with interesting results due to the power of the engine.

Does GMod use Source 2?

there's no Garry's mod as of today. but there's S&box which is made by the same company and it's like Gary's mod. unfortunately it's running on the source 2 engine and not unreal.

Is Garry's mod an engine?

Garry's Mod, often abbreviated as GMod, was created by Garry Newman. It is not a mod of a specific video game, but rather a standalone game built using the Source engine, which was developed by Valve Corporation.