In order to Update your Dragon Land App please follow these steps:

1. Open the Play Store.
2. Click on the upper left corner and a side menu will open, click on "My Apps".
3. Look for Dragon Land and click on it.
4. If any Updates are available then the Play Store will let you know once you access the Dragon Land App profile. If there is any available update for the game it will be shown here.
Click on it and it will start the installation process.