Ys is an action RPG with original combat: instead of pressing the "attack" button, you simply run into the enemies you encounter. You do more damage if you run into them from the back or from the sides - a head-to-head collision might result in Adol's death if the monster is stronger than him. You gain gold and experience points for defeating your foes; once you have gained enough experience, you level up and become stronger. You can buy and equip swords, armor, shields, and other accessories.