It is a surprise egg game.

An egg appears in the center of the screen, the user taps it until it cracks open. The total taps needed to open it may be modified (1000000 by default).

Users are rewarded with hits it they share in twitter and facebook 

Users are rewarded with hits if they watch ad videos

There are in-app purchases to acquire higher hits-per-tap items.

There are different surprises each time.

Once opened and the surprise is revealed, the game starts over.