Sword Art Online: Re - Hollow Fragment is a 3D action RPG that lets you explore the floating city of Argentum and the vast world of Aincrad, following the anime’s story while also venturing into a new side story with original plotlines. You play as Kirito and other characters, leveling up, unlocking weapons, and battling bosses in fast sword-focused combat with a large multiplayer presence and tons of character customization.