1. Choose a hero. 2. Equip your deck. 3. Select a neighboring castle to battle. 4. Battle: Scroll your view with the arrows. Units will automatically spawn, but you can click them and a location to move them. Click a special ability card to use it. Pull your hero back to heal when his health gets low. 5. Upgrade your cards for defense. 6. Click 'end phase': it is your enemy's turn.