Z Survival:The Plague

An army of zombie struck, the plague spread, the zombie gradually devoured the world, and the end was coming.
   Chaos in the world, what will tomorrow look like, and how should people survive?
   Retreat to the castle, as a survivor, in order to survive tomorrow, people must make a variety of weapons, build various forts.

   —Sniper forts to shoot zombie from a long distance
   —Ice forts to slow the movement of zombie
   —Flames for turrets to kill zombie in pieces
   —Lasers The turrets let the zombie fly into ashes

   These turrets need to be continuously synthesized, improved, and upgraded. When it is urgent, air support is also needed. 
Kill the zombie, expel the plague, and fight for peace in the world together!!!