How do I bind my game account?

Tap your avatar, then tap "Account," then tap "Bind Account" to use an account binding option. You can currently bind your account with Facebook, Google+, or Game Center, and we will continue working on adding more third-party account binding options. Once you've successfully bound your account, you will be able to login to it from any device.

Each single third-party account can bind up to two game accounts per server.