This is an expansion, you need Zombicide: Green Horde to use.

The zombie plague is not limited to just humans and orcs. All manner of creatures are succumbing to the vile disease and launching an assault on the living. The rats that form into undead swarms are bad enough. Then there’s the ghostly Spectral Walkers that can only be damaged by magic. But when there’s a zombie dragon to deal with, the Survivors are gonna need a bigger crossbow.

• Contains a huge Necromantic Dragon, as well as Spectral Walkers, and swarms of zombie Ratz.
• Introduces the powerful Ballista.
• The Ratz, Spectral Walkers, Ballista, and Necromantic Dragon are each represented by highly-detailed miniature figures.