Quoted from Outlane-Avoider:When playing a good game, there's quite a big wait after playing Royal Madness until you can start Battle for the Kingdom, and destroying those six castles involves a lot of risky shots at the castle gate!
The castle shots don't have to be that risky if you shoot from the left flipper and bank off of the inside of the right castle entry inlane before it hits the gate. That shot brings the ball back to the right flipper on my game most of the time.