Inuyasha: The Secret of the Cursed Mask is based on an anime series of the same name. You can play either as a teenager boy or a teenager girl, named by the player. The two scenarios are very similar and basically follow the same story: you live in modern-day Tokyo and one day discover a strange symbol in an old storehouse. As a result, you are transported to medieval Japan. You encounter the half-demon Inuyasha, who introduces you to Kagome Higurashi, the heroine of the anime series. Together you embark on a journey to retrieve scattered pieces of the Sacred Jewel and to find a way to get back home.

This is a fairly traditional Japanese-style RPG with random encounters and turn-based combat viewed from over-the-shoulder perspective. You can attack physically, use special techniques, and power up to combo attacks with multiple characters.