I download it, and it was very good for a first build!
But the events aren't so very good.
The teleport on the ground is really good.
But why are those zombies not in the place where the houses are.
And why do you die i you touch the ground?
Anyway: I tried it with zombies on, and i was in the saferoom, and I changed the minigame, that the zombies can destroy bricks, so the safe room wasn't save anymore :)
I ran and on someway I came out of the building, and then I saw all those zombies coming out of the building! THAT was FUN!