Hmm... The only issue I can see is that we would need to thoroughly define what the zombie's abilities are (there are many different types of zombies out there, whether these ones can run fast or slow, etc.), and also the volume that they would be in (because if we decide that for ourselves, we would be able to "narrowly avoid" the zombies whenever we feel threatened, which would make us lose that interesting aspect of desperation).

I think it sounds like a very interesting concept though, and if we can find a way then I would love to participate! :D

I would die very quickly, though... Haha. ^^"