Z Survival :The Plague description

An army of zombies struck, the plague spread, the zombies 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 zombies from a long distance
-Ice forts to slow the movement of zombies
-Flames for turrets to kill zombies in pieces
-Lasers The turrets let the zombies fly into ashes

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