Gmod + Free Half-Life 2 deathmatch

I’m considering buying gmod, but I heard that it requires a Source game to play. Will Half-Life 2 deathmatch do? I received it for free for having Nvidia card.

No.

Not the free one. Buy The Orange Box, or CS:S

EDIT: and the ENTIRE orange box. not just one of them.

Doesn’t it say the Portal: First Slice and the bundled Half-Life 2: Deathmatch do not fulfill this requirement.

You gotta pay, bro.

[editline]10:05AM[/editline]

But don’t worry, it’s worth it.