Ys: Book I & II

Ys Book I & II known in Japan as Ys I & II (イースI・II Īsu Wan Tsū) consists of enhanced remakes of the first two games released in the Ys series, Ys I: Ancient Ys Vanished and Ys II: Ancient Ys Vanished – The Final Chapter. It was one of the first video games to use CD-ROM, which was utilized to provide enhanced graphics, animated cut scenes, a Red Book CD audio soundtrack, and voice acting. The game's English localization was also one of the first to use voice dubbing.

In both games the player controls a red-haired swordsman named Adol Christin. In the first game he must seek out the six Books of Ys. These books contain the history of the ancient, vanished land of Ys, and will give him the knowledge he needs to defeat the evil forces currently sweeping the land of Esteria.

In Ys II Adol is transported to the floating civilization of Ys, and begins a quest to unravel the secrets of the land, and finally rid it and Esteria of evil. All English translations of Ys II were part of a compilation; no standalone version has been localized.