So here's a fun sounding idea. You take zombies and cities. You plot them out on a map. Then you use Google Earth to save all the people who were not ready for Z-Day. Brilliance! And it is call The Last Guy. Sounds a bit like playing Infected only using the top down map view, but still, it is a great idea. Could really help you finalize your zombie plan in your own town. Even though it breaks one of the cardinal rules of Z-Day. Everyone for them selves.
I wish there was more in english about this game though. There is an official site, but it is all in Japanese. Damn babble and breaking the universal language. But check it out. It could save your life someday.