Sword Art Online: Lost Song - PlayStation 4 Explore land and air - Walk or fly throughout the world of ALfheim Online and soar through the skies around the floating! Create your hero - Play as Kirito or other key characters from Sword Art Online including Leafa and Asuna or create your own customizable avatar New Adventures - Experience a completely new adventure and story in ALfheim Online in a new area of the world, Start Alfheim Online Battles - Explore the world with up to 3 other friends in co-op play or take to online battle with multiple PvP modes