Here are some cheats and tips for the game Ys 3: Wanderers From Ys.
Restore health:
Hold Up on controller two when the Sega logo is displayed.
During game play, enter the status screen. Hold C and
press Up, Down.
Adjust power level:
During game play, enter the status screen. Hold A +
B + C on controller two and press Up or Down
to adjust the power level.