Young Samurai: The Way of the Sword hope Jack has of protecting his father's rutter—the invaluable navigation guide of the world's uncharted oceans—from Dragon Eye. Forced into a deadly battle, Jack's going to have to master the Way of the Sword. And his time is running out. Publishing rights to the first three books in the "Young Samurai" series were acquired by Puffin Books in a three-way auction in 2007. Disney then bought the US publishing rights in the same year in a pre-emptive deal prior to the Frankfurt Book Fair. The translation rights to the series have since been sold to over 20 different territories, including
Sword Art Online behind "Bloodborne" taking the top spot. A fourth game titled "" was released in Japan for the PS4, Vita, and Windows on October 27, 2016 and worldwide on November 8, 2016 for the PS4 and Vita. A social network game called "Sword Art Online: End World" was released for Japanese feature phones and smartphones on February 28, 2013 with more than 1 million registered users. Another freemium game for Android and iOS titled "" launched in 2014, and over 3,000,000 users have downloaded the game. Another game called "Sword Art Online: Progress Link" designed for the Mobage browser game platform