How do I make a mod? Help please, greatly appreciated!
So I wanting to edit some objects in Left 4 Dead 2, like interactive objects just so I can make the game look different the way I want to. I was also wanting to change how the zombies look. If anyone could help me with this, I would be in debt to you! P.S I already have Left 4 Dead 2 Authorization tools, is it something on there??? I would be led to think so.