Sega1991 said:Yes, for about as long as it takes to beat The Passing once.
Left4Dead and Left4Dead 2 are great games but they're still not the "infinitely replayable" games Valve promised. At least, not to me. I've still never really gotten in to Versus, Survival or Scavenge, so for me it's basically "play a campaign with my friends once every two or three months".
I doubt The Passing will change that.
Try Versus, for the love of Valve. Get into it. That's the game. Campaign is just to get used to the mechanics.