Atom Zombie Smasher

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Take command of your mercenary forces in Atom Zombie Smasher. The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead.

Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more. Experience the tactical richness of fully-destructible environments and procedurally-generated campaigns.

And when the apocalypse ends, create and play your own mods!

Key features:

Mercenaries for hire: Hire and upgrade your ragtag group of snipers, demolition teams, orbital bombardment crews, and more.
No two cities are the same: Cities are procedurally-generated, giving a unique experience with each playthrough.
Destructible environments: You can absolutely blow up everything.
Play with friends: Up to three people can cooperatively play together.
Mod support: Mix and modify the game rules however you like.