Based on the popular light novels by Reki Kawahara, Sword Art Online is one of the best-known anime of the past decade. The fantasy sci-fi series has captured the imaginations of viewers with its adventures through different game worlds that often blur the lines between virtual reality and real life. That being said, viewers new to the series may need a little help determining the proper Sword Art Online watch order.
Source：https://www.cbr.com/sword-art-online-watch-order/
