Crush, Kill, Destroy
This is such a great project, and I can only see it getting better. I wish someone was making this earlier, I really do, this is exactly what I could ever want from a Zombie Survival game, and just reading about the planned features makes me happy.
You can read about some of my PZ experiences on my profile.
It may not seem great now. But eventually it will have a huge upper-hand over MineCraft.