Challenges
Go to QuestNo challenges available for this game right now.
Rewards
Create your accountRewards for other versions of this game
These rewards are specific to other versions of this game (usually platform-specific covers). You can unlock them with Reputation, or by mastering the version of the game they are tied to.
Official cover for Garry's Mod on Steam
This is an official image pulled from this game's platform. If it changes, it will also automatically update for you.