Game buddies are your in-game friends which you can add when you meet them during the game.

To add someone as Game Buddy
1. Tap on his/her profile picture during the game
2. Tap on the green add friend button beside their name

Note: You cannot send lucky dices to Game Buddies.
Adding game buddy functionality is only limited to players who logged in the game using their Facebook Id. Guest users will not be able to add buddies.