[Android]
If you download and start the application while signed in to Google Play Game Service, your account will be automatically linked to Google Play.
You can then select from Google Play / Facebook / Twitter to link your account from.
*Google Play Games account will only be usable on Android devices.
[iOS]
In the title screen, you may select from either Google / Facebook / Twitter to link your account from. If you do not link your account from the title screen, you will start the game with your guest account.
Should you choose to link your account in-game, you can do so following the steps below.
[Menu] - [Options] - [Link Account]
If you have linked an account, you can continue playing MapleStoryM using the same account data on a different device by logging in to your linked account.