Tips and Tricks
Follow the quests in the top left corner they will help you in figuring out how to rebuild and what to do next, and you’ll earn lots of wood, runes and fish as a reward for doing so.
Upgrade the sawmill and the fish hut first so that you can send more than one dragon there at a time. And upgrade dragons so they can go more times there.
Also see to upgrade Toothless a.s.a.p. since he can go to more different islands.
Make room for more dragons and more vikings by knocking out as many trees and rocks as you can.
For free runes go to the in game store, and look underneath all of the rune purchasing options. You can earn free runes from watching advertisement videos.
For free runes you can complete TapJoy offers as well.