Sword Art Online: Hollow Realization, a game for PS4 and PS Vita, will be released in Japan on October 27th, according to Bandai Namco Entertainment. A release date for the West has not yet been announced.
Sword Art Online is a Japanese light novel written by Reki Kawahara and illustrated by abec. Other games have been released in the series, such as Sword Art Online: Infinity Moment, which was released for PlayStation Portable in March 2013, and Sword Art Online: Hollow Fragment, which was released for PlayStation Vita in April 2014.
Watch the trailer: