In Zombie at the Gates, your goal is to construct a flying castle so that you can escape your zombie-infested surroundings. Collect money, stars, and resources as you fight off the zombies that threaten your life. Coins can be spent on melee and ranged weapons, stars allow you to upgrade your abilities, and resources are needed to build your flying fortress. Losing all of your hearts will result in death, but you will be revived if you die within the safe area. You can only be revived once a day.