Duet Night Abyss delivers a sophisticated and layered Simulation of hero development and resource Management set within the sprawling, magic-industrial world of Atlasia. As a pioneering Free To Play title, it completely removes traditional randomized banners, allowing players to grind for every character and weapon through a deterministic progression system. Success is dictated by your long term strategy and your ability to oversee the technical growth of your roster using modular upgrades known as Demon Wedges.