If you want to continue playing your current account on another device, you can do so by following these steps:
- Once inside the game, on your old device with the desired account, go to the Setting menu and connect it with your Facebook, Apple or Google Play account, whatever suits you best.
- Install M&M's Adventure on your new device
- Connect this account with the same Facebook, Apple or Google Play account you connected the previous game to
- Then you can choose to overwrite the progress to the account on your most recently used device