The First Descendant is a Free-to-Play Online Co-op Looter Shooter game that creates a unique atmosphere through a sci-fi-based fantasy world. It provides unique and exciting shooter battles based on various skills of each character, special movements through wires, and dozens of guns. Main characters' goal is to become Descendants in the fantasy post-apocalypse world and rebuild the world. Hundred years ago, demons, the legendary beings, attacked humans beyond their dimension. After that, Colossuses with outstanding power descended and destroyed all civilizations. Humans continue their expedition to find new human habitats and resources against the Colossues.