It is highly recommended to have HL2 + ep1/2 + CSS + TF2 in order to:
use their maps and content
use addons or mods requiring those games
GMod is more fun with having more stuff at your disposal. A basic installation with no other resources lacks of almost everything when it comes to maps, props, npcs, etc
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Quote:
Originally Posted by Jessica
I'm not middle aged or male! Actually, well, that's debatable..