Mutant Year Zero: Seed of Evil is an engaging expansion to the tactical adventure game Mutant Year Zero: Road to Eden. This full-version game on Nintendo Switch adds significant gameplay hours along with new locations and a new character, Big Khan the moose, enriching the player's experience. Players continue the journey of Dux, Bormin, Selma, and their companions as they confront emerging threats to their community.

The expansion introduces a compelling storyline centered around a mysterious force that has infiltrated the Ark. Players will navigate through expansive new maps, confront various new enemies, and enhance their characters with improved mutations and gear. The challenge escalates as players strive to reclaim lost territory and face a formidable new adversary, making this expansion a noteworthy addition for fans of the original game.