The Sword Art Online MMO is based on the the illustrated novel series by Reki Kawahara Kazuto and the SAO anime series. It's 2022, and genius computergame developer Akihiko Kayaba has develpoed the world's most immersive virtual realtiy MMO (VRMMORPG) game. It's so immersive, in fact, that once players put on their NerveGear helmet, 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.