I want to make a 'dude ranch' where the whole point of it is that visitors will get 'attacked' by invaders of their choice (aliens, zombies, playboy bunnies, whatever) and have to either defend the ranch or flee to the woods and survive there while being chased. Survivors get a prize.
Does such a thing already exist? I tried looking and got a bunch of 'survival' camps that were just low-tech camping. No fake enemies in sight.