Thank you for the additional information. I'm glad to hear that it is system independent. I think the last time I looked at it it appeared to be for D&D, but that may have just been the samples and such that they were presenting.
I will definitely check this out more in depth at a later date. My plate is very full right now, but I will have a need for something like this in the not too distant future.
My efforts will be to make some random encounters involving a modern day zombie campaign/adventure.