Horizon Zero Dawn is a critically acclaimed action role-playing game developed by Guerrilla Games. Set in a post-apocalyptic future where humanity lives in primitive tribes and massive, animal-like machines roam the Earth, the game follows the journey of a young hunter named Aloy as she uncovers the secrets of her world and her own origins. In the distant future, civilization has collapsed, and nature has reclaimed the ruins of the old world. Powerful machines dominate the landscape, and the remnants of humanity have regressed into tribal societies. The protagonist, Aloy, is an outcast from the Nora tribe and raised by a man named Rost. Determined to discover who her mother is and why she was shunned, Aloy trains to participate in a tribal competition known as the Proving. After winning the Proving, a mysterious cult known as the Eclipse attacks, prompting Aloy to leave her homeland on a quest for answers. Along the way, she learns of an ancient AI called GAIA and the catastrophic event known as the Faro Plague—when self-replicating military machines consumed all biomass on Earth, nearly wiping out life. Aloy discovers she is a genetic clone of Dr. Elisabet Sobeck, the scientist who created GAIA to restore life through an automated terraforming project called Project Zero Dawn. When GAIA’s subordinate function HADES, designed to destroy failed biospheres, becomes corrupted, it tries to exterminate all life again.