See the castle ahead? Get ready to invade its mighty walls. Shoot a projectile with an archer’s aim. Head across the drawbridge, over the moat and up to the top of the tower. What’s that sound? I hear little hooves going trip, trap, trip, trap, over the rickety bridge. Watch out for the angry troll underneath. He likes to gobble up little girls and boys. Make sure your bridge is sturdy enough to take our weight and get us safely to the other side. And finally, meet three little pigs who need your help to build a strong fortress. Inside its strong walls, they’ll be safe from the big, bad wolf. No huffing and puffing will blow your fortress down.