What do I need for garry's mod?

[lt.dan.zsu]

So I have portal, portal 2, TF2, Half life, and Half life 2. Will garry's mod work? I've heard some people say that it requires CSsource.

[Random Reference #98]

You're fine, I ran it when my only source game was HL2 Deathmatch. The more games you have installed though the more things you have to play with in game.

[UberFiend]

You need to be a few tiles short of a bathroom.

Yes it will work you might be missing a few textures depending on what you're doing within it.

[Arcanum]

The only thing you need is money to buy the game.

[Kryzoid]

A lot of popular gamemodes utilize CS:Source content. The game will work fine regardless, but you may get broken textures and errors.

[Littlefoot]

You should be able to play gmod with those games mounted, though i still recommend buying Counter-Strike: Source. A lot of addons, maps and gamemodes uses content from that game.

[Matty]

CS:S is still $20. That's ridiculous for a 10 year old game.