Mutant Year Zero: Seed of Evil is an add-on for an adventure tactical strategy with turn-based combat in a futuristic setting. A new story campaign awaits you, which will allow you to play as a mutant named Big Khan, who is a moose with unique abilities and skills. The story involves an unknown new threat in the Zone, where an evil plant is abducting people, replacing them with distorted copies made from plants. Big Khan does not like these creatures, preferring to destroy them on the spot and the fire breathing skill helps him in this, instantly setting organic enemies in the affected area on fire.
The add-on requires the original version of Mutant Year Zero: Road to Eden.