No pain meds and “health packs are the only thing keeping Left 4 Dead 2 from being the world’s most comprehensive zombie apocalypse survival sim. In the real world, these things don’t have the immediate recuperative effects they do in the video games. If you want to see how it would truly play out in real life, you should check out this week’s mutation: Healthpackalypse.
In this custom Versus play mode on both the PC and Xbox 360, the survivors get no health packs at all. If you’re on the Infected side, go crazy as the humans try to make it through without the use of first aid. If you’re on the survivor side, well — better luck next time! It’s called “the apocalypse” for a reason.