The Sword Art Online MMO is based on the illustrated novel series by Reki Kawahara Kazuto and the SAO anime series. It's 2022, and genius computer game developer Akihiko Kayaba has developed the world's most immersive virtual reality MMO (VRMMORPG) game. It's so immersive, in fact, that once players put on their NerveGear helmet to enter the game, the only way to escape alive is to ascend the 100 levels of the steel castle Aincrad. But if you die in the game, you die in real life, too! Experience the spectacular adventures of Kazuto "Kirito" Kirigaya, and lead the way to the top floor of Aincrad.