What is Garry's Mod about?

Garry's Mod, often abbreviated as GMod, is a sandbox game developed by Facepunch Studios. Unlike traditional games, Garry's Mod doesn't have a defined objective or narrative storyline. Instead, it offers players a platform to explore and manipulate within a physics-driven sandbox environment.

The game provides players with a toolkit to experiment with various objects and materials, letting them create their own scenarios, contraptions, and structures. 

Users can spawn and manipulate a wide array of objects, from basic shapes to complex items, and combine them to form unique creations.

Also, multiplayer functionality enables users to collaborate on projects, play custom game modes, or engage in social activities within the game's community.

Garry's Mod game mods

Single-player and multiplayer modes offer different experiences. In single-player, players can experiment at their own pace, while multiplayer introduces interaction with other users, fostering collaboration or competition.

Different game modes within Garry's Mod offer diverse experiences, from mini-games and role-playing scenarios to physics challenges and social interactions.

Although, the freedom in Garry's Mod extends to the gameplay, allowing players to explore various interactions between objects, experiment with different physical properties, and even create complex machinery or scenarios, do keep in mind that certain multiplayer servers and game modes require ownership of other games like Counter-Strike: Source and Team Fortress 2.