My idea for a add-on is "Night Silence" It's in the middle of the night throught the whole entire campane and its were you crash land from the heli. in "The Parish" and you made it to the outskirts of a town called Lanecaster in Louisanna  and you end your trip in a subway finnale.The levels are: 1.)Outskirts 2.)Travel 3.)Town Square 4.)Downtown 5.)Ecsape.I want more ideas!

nice idea. i have a plants vs zombie addon. it's pretty fun. pretty much just press a button and zombies of horde just come running into the yard. you shoot them.

How about a maze made only of rows of witches seating down and you gotta go real slow and there's boomers once in a while coming in the distance so you gotta snipe em real fast lest they alert a horde to your position and startle the witch. Run-on sentence.

You know you can use the mod tools to make anything you want.

I always thought a campaign where at one point they go through a prison would be a pretty cool idea. One crescendo idea would be having to open all the cell doors to continue, sounding that huge alarm and alerting the horde. They could also maybe take a more direct story route with meeting some survivors in the prison, since it could possibly be a easily defensible area. I'm not sure what else they could do to wrap around the prison sequence, but I had always thought that would be a neat location to fight through.

My idea is for an add-on called "Left 4 Derp" where you can only use the hunting rifle and a chainsaw as your weapons.