L4D 2 Sandbox?

Can someone make a L4D2 Style Sandbox like… sandbox with zombies, chargers and all that

Whats sandbox about it if you get attacked by zombies… how are you supposed to build properly then?

Please provide more information. And a more sensable game mode. You can just add L4D2 npcs (if you can make them) and put them in your normal sandbox game. It might lag shit up.

I think there was a mod made specifically for this. Left 4 Sand, I think.

Problem is, I’m not sure if it supports L4D2.

You shouldn’t fuck with the poor guy :C