Garry s mod sex. Garry's Mod inherits all the guns, the alien creatures you shoot at and the evil policemen that shoot at you. Steam is operated by Valve. As Garry's Mod is a Mod, it inherits all the traits of the game it modifies. Is there sex? There are guns, and people shooting each other. I've given the source to a few other players to beta test as well so some other servers will pop up. Just like giving them a pen and paper and asking them to draw. You can buy games on it but you don't get a physical box, the games are automatically downloaded. What is Steam? Is GMod played online? Remove the roleplay from it, and it will become a great gamemode.