Currently, it's available on Valve's Steam client for download.Ī 'sequel' called s&box is currently in development. The game uses a lua scripting format for its weapons and events, meaning it's possible to code your own weapons into the game and publish them to the Steam Workshop, along with user-created maps, props, vehicles, entities, NPCs, effects, and models, resulting in a highly customizable game. All of this makes Garry's Mod one of the most popular mediums for creating Machinima, and because the ability to play around with ragdolls lends itself perfectly to all kinds of zany slapstick, it is also widely considered the Denser and Wackier counterpart to Source Filmmaker.