Zombie Killer 3 is a fast-paced game where players take on the role of a skilled fighter tasked with clearing a city overrun by undead creatures. With each level, the number of zombies increases, requiring players to adapt their strategy to survive.
Gameplay revolves around shooting and dismembering zombies with a variety of melee and ranged attacks. Movement and combat can be performed using a keyboard arrow keys and action buttons, with a focus on swift reflexes and strategic positioning. The player's goal is to eliminate all zombies on each level, with failure resulting in a game over and the need to restart.
Players have access to different attacks, including pistol shots and clubbing options. Each attack has a specific range and effectiveness against the diverse zombies, which have varying levels of speed and toughness. The game runs entirely in the browser, without the need for downloads or registration.