Ultimate Zombie Defense is a Top-down Co-op Survival Horror set in the suburbs of a once quiet city, in the heart of continental Europe. The city and the surrounding 250km landmass have been sealed off in an attempt to curtail the outbreak, although sadly all attempts have failed, until now.

You and your friends are elite members of the military dropped into this plagued location and have only one mission: Locate and destroy the source of the infection.

Well, what are you waiting for? Get to it, Soldier!

FEATURING:

An extensive base building system where you may place objects such as chain link fences, sandbags, barbed wire, concrete barriers, turrets, mines, fog lights and other military-grade components!

Apocalypse proof weapon selection from the classic pump shotgun to the flamethrower, grenade launcher, mini-gun and many, many more!
Epic Slow-mo that will trigger during your most impressive moments
Unique Boss fights to challenge even the most seasoned zombie slayers
Metal music mayhem - Rock out whilst laying waste to hordes of the undead!

Choose between 8 unique characters to battle the army of the dead

A variety of infected including more than 12 Unique monster types
Cooperative gameplay for up to four players
Solo game mode for offline play

Mature Content Description

The developers describe the content like this:

This Game may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore, General Mature Content
System Requirements

Minimum:
OS: Windows 10
Processor: 2.5GHz or Equivalent
Memory: 4 GB RAM
Graphics: Intel® HD Graphics 5000
DirectX: Version 11
Storage: 1 GB available space

Recommended:
OS: Windows 10
Processor: 3.5GHz or Equivalent
Memory: 4 GB RAM
Graphics: Nvidia GTX 1050
DirectX: Version 11
Storage: 1 GB available space

https://store.steampowered.com/app/1035510/Ultimate_Zombie_Defense/