The ZIS

I saw this online and I thought it was a pretty darn cool and useful simulator. It is the "Zombie Infection Simulation" (or as I call it, the ZIS. It's cool to say)webpage. You never know when the "God's eye view" perspective experience will come into practical use. It tests out your skillz and pushes you to the limit. I know it is only fake and it is only a bunch of dots, but I can't help but feel my pulse rising and break into a cold sweat and get into a heightened attention level when running it. I mean, imagine your one of those red dots there in a big room, then suddenly a green (or gray) zombie comes barreling through the doorway infecting everyone it touches. As you see the infection cascades throughout the room like a computer virus on a heavy Windows NT network infrastructure, you duck through the doorway behind you into the hall where there are only a few of the original human survivors left. Everyone huddles around as the zombies are unable to come through right away due to the stupefied nature of undead zombies. Suddenly, one of the zombie mobs that just formed nearby comes milling around the corner. As they suddenly notice you, panic hits in your group. Humans run in all directions, including right into the clutches of the zombies who turn them into zombies (of course).
This, this is realism. And very cool.

The ZIS V2.3.

This next one is a bigger and better takeoff of the other one in which you can fight by means of controlling military forces. And in case you get really desporate, you can drop MOABs.
The "Incredible Zombie Macine v1.0b"

And, in case you are feeling the itch for some intelligent discussion on the nature of zombies, please visit This Topic at the Gamedev forums.