So… How Do i Do This.
Well, since every Source game comes with HL2 props and materials, all you basically need to do is open the map in L4D SDK, and compile.
But i’m sure the NPCS won’t be there, and you gotta add the zombies yourself.
Wait, this is the gmod section… Get your ass to the mapping section.
Just need to be said, The L4D “Director” makes random zombie spawns on ANY map.
There’s an video on youtube of someone just loading a standard CSS map and slaughtering zombies.
He wins! ^