Zombie Hunters is a rare find for fans of survival in extreme conditions of the apocalypse, as your main task will be to confront an army of the walking dead. There is a whole arsenal of weapons and skills that you can choose from, but it costs gems, the local currency. Using Zombie Hunters codes, you can get some of this currency to buy the goods you want. Codes are a great boost for beginners, but be aware they have an expiration date, so use them as soon as possible.