A 2009-current light novel series written by Kawahara Reki and illustrated by Abec. Initially written in 2002 for the ASCII Media Works’ Dengeki Game Novel Prize (now Dengeki Novel Prize), the author refrained from sending it in due to exceeding the page limit. Kawahara Reki published it as a web novel and later added 3 more volumes and short stories to the series. After winning the Dengeki Novel Prize Grand Prize in 2008 for Accel World, ASCII Media Works requested that aside from Accel World if they could also publish Sword Art Online as well. The author agreed and withdrew the web novel version. The series was republished in light novel format in 2009. It also has 3 manga adaptations and 3 season anime adaptation by A-1 Pictures.
A movie Sword Art Online the Movie: Ordinal Scale by A-1 was released on February 18, 2017. The movie features a new original story that takes place some time after the end of the second season of the anime.
- Aincrad (First Arc, SAO)
- Fairy Dance (Second Arc, ALO)
- Phantom Bullet (Third Arc, GGO)
- Caliburn / Mother's Rosario (Side Story Arcs, ALO)
- Ordinal Scale (OS)
- Alicization (Fourth Arc, Project Alicization)
- Unital Ring (Fifth Arc, UR)
- Sword Art Online the Movie: Ordinal Scale
- Sword Art Online Alternative: Gun Gale Online
- Sword Art Online: Alicization
- Sword Art Online: Alicization - War of Underworld
- Infinity Moment - 2013 (PSP)
- Hollow Fragment - 2014 (Vita), 2015 (PS4)
- Code Register - 2014 (iOS, Android)
- Lost Song - 2015 (PS3, Vita, PS4)
- Hollow Realization - 2016 (PS4, Vita)
- Memory Defrag - 2017 (iOS, Android)
- Fatal Bullet - 2018 (PS4, XOne, Switch, PC)
- Alicization Lycoris - 2020 (PS4, XOne, PC)
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