To level up your dragon, you will need to build farms and grow food. Besides
building these farms, you also need to upgrade them whenever possible since
your Dragon will consume lots of food in the higher levels.
You won`t be able to obtain gems easily. Therefore, you need to use them wisely
only to get important things, such as Hatchery Upgrades in order to hatch more
eggs simultaneously. You can also use gems to get the Ultra Breeding Tree and
Island expansions. You will need to achieve your goals, fight and complete pages
in The Book of Dragons to get more gems.
The core of the game is in the Stadium and Combat section. Here you will need to
fight other dragons and players using three of your best Dragons. If you win, you
will obtain gold and gems. Don`t forget to upgrade your dragons attacks in the
Training Centre, since the difficulty will increase as you progress through the
levels.