The second DLC, titled Creator of Entrenchments ( 壕陣の造手, Goujin no Zoushu ?) in Japan and Betrayal of Comrades in the West, follows up on the story of first DLC. The first DLC, titled Champion of Gunfire ( 銃火の覇者, Jūka no Hasha ?) in Japan and Ambush of the Imposters in the West, takes place before the later episodes of the game. Sword Art Online Fatal Bullet has introduced three additional story campaigns via additional paid Downloadable Content (DLC). The final chapter of the main campaign also offers two default endings, depending on the player's choices, as well as a canon True Ending. The two modes are accompanied by side events, focusing both on the main Gameverse cast, and the Fatal Bullet original cast.
The base game includes two modes: the Main Story, which follows the player's custom character, and Kirito Mode, a mini-campaign focusing on Kirito where the Death Gun incident is adapted to fit the Gameverse. Fatal Bullet follows the events of Sword Art Online: Hollow Realization and takes place in Gun Gale Online, a game released by Zaskar following the advent of The Seed.
