How do you defeat the dragon on red dragon island?
You defeat the dragon by clicking towards his head, or just
aiming there when your spray is continuous (easy mode).
When you reach Mt. Fuji, you climb onto the Cloud Dragon, which
can spew water. Fly behind the Red Dragon, which is burning the
city. Use your mouse to aim, and click to blow water on the Dragon
and the fires. You must turn the dragon completely red
(extinguished) before the last of the four buildings burns down. If
you run out of water, fly up to the clouds to refill. If you fail,
you can play again. Using the Easy Mode means that you always have
water, and the Red Dragon does not fly out of sight as much.