ABOUT THIS GAME
Polygone is a low-poly, yet highly visual take on the classic "Zombie Modes" in modern first person shooters. Play with up to four friends to fight off endless hordes of zombies on a massive map that you'll need to unlock areas to explore. Board up windows, purchase new weapons, and more.

Over 50 different types of zombies and bosses will test your skills. Weapons range from traditional rifles and launchers to futuristic lasers and plasma weapons.
MATURE CONTENT DESCRIPTION
The developers describe the content like this:

Cartoon/stylized blood and gore. Zombie limbs can be shot off. Blood sprays on impact.