What the Zombies?! is a game about... zombies! Game features 2 game modes!

Arena mode:
-Pick one of several playable characters
-Play on arena trying to survive endless waves of zombies
-Upgrade your character and weapon stats by purchasing items in shop between waves

Sandbox mode:
-get experience and level up your character
-improve your character stats and also your weapons levels too!
-craft and build items you can place anywhere on the map!
-discover new crafting recipes!
-play on open world apocalyptic city where you must survive!
-collect resources!
-rescue survivors - they come handy in your base!

Highlights:
-over 90 items to craft and place anywhere in the city you want!
-over 20 playable characters to unlock!
-many survivors to rescue in sandbox mode! (each coming with its own function in your base!)

More details on the official game page of What The Zombies?! ...