The zombie aspect of this game is its absolute best one, imo, so I can understand why the execs thought it would be a good idea to charge for it. I'm sure it worked and profits are up, but everyone who already bought the game, our gameplay was trashed. I can hardly find a zombie game to play now unless I make one, this means I am limited to my maps and can never just grab a quick game I always have to be the one sitting and waiting from the start.