Many high tier dragons in events take a lot of coins to reach, which you'll likely have to buy with real money if you want them within the timeframe.

Allegedly Free Game: Many tasks have long waiting times of hours, in which you'll have to fork your gems, the premium currency, over if you're impatient.

The other mechanics are the same as Dragon Vale: grow food to feed your dragons, battle them with Elemental Powers, breed them, and participate in events to unlock exclusive ones. The idea is to raise a magical floating island of various magical dragons. Remember to use some gems eventually, not everytime, but if your alliance it's active and score lots of point as mine, the do so.Dragon City is a Mon Mobile Phone Game and Spiritual Successor of Dragon Vale introduced by SocialPoint in May of 2012. Hope this will help you as it's very helpfull for me.

Then i changed to normal terra strategy again. This morning i waited to a node which request me hatching items, and I got 3 out of 4 with no effort. I did it Last night, i use the hatching tower power to shorts the hatching of 4 war Dragons, i waited 1 hour, hatched them, then buy another 4 and went to bed. Also always do so during night, so when you'll wake up you will score some easy points. Also during a Heroic race make sure to check the guides, so you'll know when you'll need again to breed or hatch, and if you have plenty of time, buy or breed war Dragons. Share this tactic with your alliance and you'll be fine. Thor hatch time: 14hr/ Breed time: 11hr). For the breeding chest the tactic is almost the same, but consider that hatching take more time than breeding (war hatch time:7hr/Breed time:6hr. So buy 5 war Dragons eggs for the hatching chest, don't collect or use other Dragon in the hatchery until the end of the chest, and you should be able to do like 4-6k points per Day (sometimes use gems to increase even more your points). When a war Dragon is bred or hatched, it gives you like 400 points, while a Thor Dragon (the other one which can be breed by war+war) gives like 1400 points. I tried Last hatching chest and my alliance got to level 6chest in this 2 days( 150k points).

I know for sure that war Dragons tactic works.

I don't know about Electric Dragons method, but i'm sure they need 30 min to hatch and also for breeding (there a chance to not get Electric by breeding 2of them, so you'll lose some hours).

Dragon city breeding terra dragon