<P> Sword Art Online: Hollow Realization (ソード アート ・ オンライン - ホロウ ・ リアリ ゼーション -, Sōdoāto Onrain - Horō Riarizēshon -) is a video game developed by Aquria and published by Bandai Namco Entertainment for the PlayStation 4 and PlayStation Vita, based on the Japanese light novel series, Sword Art Online . It is the fourth video game in the series and the successor to Sword Art Online: Lost Song . Hollow Realization was released on October 27, 2016 in Japan, and on November 8, 2016 for North American and European territories . </P> <P> Unlike in Sword Art Online: Hollow Fragment and Lost Song, a party in Hollow Realization consists of four characters including the player, instead of three . While HF is played like a role - playing game and LS like an action role - playing game, HR is based on HF's style, but with action elements integrated . Characters can be customized through in - game character creation, with gender, height, figure, weapons, and physical appearance changeable . Additionally, over 300 non-player characters appear in the game, with all of them being recruitable to join the player's party . Players can create special bonds with these characters by giving equipment to them . Strengthening the bond also increases the character's strength . </P> <P> A new battle system also features in Hollow Realization, where the four - person team of players fight monsters using sword skills in a similar fashion to the original Sword Art Online game . Players can also direct and receive guidance from party members in collaborating to perform team strategies and attacks . Players perform chain attacks with party members using a "Switch" system for greater damage output against powerful monsters, including charged attacks and aerial combos . This includes "Named Monsters", which are monsters with significant strength that appear without warning . Set in a "wider world", Hollow Realization features monsters new to the series . A healing system in the game allows defeated characters to rejoin the battle as long as teammates are still fighting . The game features online multiplayer . </P> <P> Hollow Realization is approximately 30 to 40 hours in length; however, completely finishing the game such as leveling up to the highest level and completing all the quests will take the player approximately 70 to 100 hours . The game will eventually feature downloadable content . For example, the free expansion pack Fighters of the Blue Sky, to be released in 2016, will feature Sword Art Online: Lost Song characters Rain and Seven, a new PvP feature, and an additional story . The paid expansion pack Shrine Maiden of the Abyss, to be released in 2017, will add an additional three chapters into the game . </P>

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