If you were invited to play BibbleBabble, first install the game on your device, then return to the invitation page and tap on the linkt to accept the invitation. Now you are ready to play.

Game Center provides additional BibbleBabble! features such as achievements, leaderboards and easily finding your friends. If you are not signed in to Game Center you can select the option “Play Without Game Center” and you will be able to play BibbleBabble using a custom username.