If you absolutely cannot spend money right now, consider (the spiritual successor to GMod currently in development by Facepunch) or looking into free sandbox games on Steam like Roblox or Unturned , which offer similar community-driven creative play.
The only official and safe way to play Garry's Mod is through . Official Store: You can find it on the Steam Store page .
Garry’s Mod isn't just a standalone game; it's a platform built on the .
If you download a pirated version, you lose access to the millions of free community-made maps, models, and game modes (like Prop Hunt or Trouble in Terrorist Town) that make the game fun.