Scroll to the left until the menu appears, then select the "Free Loot!" sign to watch video advertisements in order to receive random resources. Resources are randomly awarded each time a land or a water attack is completed. After destroying a barrier, enter and collect the loot. Note: Nails can only be obtained in land battles. If you are short on troops, more can be hired in town. Tap the "Weapons & Heroes" icon, then tap the middle icon on the right side of the screen to recruit extra warriors for 50 gold each.