First, let’s clear up the confusion. Sword Art Online: Hollow Realization is the third main entry in the SAO game series (following Hollow Fragment and Lost Song ). However, the is not just a re-release with a new cover.

However, :

Players control Kirito (or a customizable character) in real-time combat, utilizing skills, dodges, and timed attacks to break enemy defenses.

The Deluxe Edition includes all major expansions that continue the narrative beyond the main campaign: Warriors of the Sky