Ys IV - Mask of the Sun

Ys IV: Mask of the Sun is a 1993 action role-playing game developed by Tonkin House for the Super Famicom. It is the fourth game in the Ys video game series.

Mask of the Sun was one of two games released under the title of Ys IV, the other being Hudson Soft's Ys IV: The Dawn of Ys for the PC Engine CD-ROM. The two games share the same basic story, but many changes were made in the Hudson-produced Dawn of Ys. Of the two, Mask of the Sun was the official Ys IV storyline before the release of Ys: Memories of Celceta.