Is garrys mod a cool game

Garrys Mod Is a great game, it has Various Addons and Game Modes, Including Spacebuild, Build, Roleplay, And Much more,
But before you buy the game, maybe you should check out some videos on youtube about it, to make sure you really want it.
if you do visit SteamPowered.com , Download Steam, and then buy the game with a Source Game. Like Counter Strike: Source.