Idle Zombie Defender

Zombies are coming. There are so many of them!
Shoot at them and defend your outpost!
Upgrade your gun.
Upgrade your turrets.
Upgrade your barricade.
And if you can't keep them at safe distance...
Retreat, earn diamonds and try again!
It's and Idle game in which you try to survive many waves of zombies.
Tap to shoot or allow the turret to defend your outpost.
If your wall is destroyed you'll need to retreat and start over, but now with additional funds and in a new location.