Havoc is an Android game developed by KNIK GAMES that falls under the action and survival subcategory. The game's objective is to navigate through hordes of aggressive zombies to reach the green area at the end of each scene.

Players can choose to safely shoot the zombies with a rifle or take them out with a pistol and silencer by stacking headshots. The game has both a campaign and an arcade mode called "on duty," where players must defend against one zombie attack after another.

Havoc offers three difficulty levels: easy, normal, and hard. Whether you prefer to sneak through the zombies' territory or take them out head-on, Havoc provides a thrilling and challenging experience for zombie game enthusiasts.