Easter Egg: Snackers
In any game mode, while the cursor is off the board, if the player types "snackers", all the images of Coal turn into an image of Snackers. Snackers is the cat whose owner is the CEO of PopCap Games.
View the Credits
To view the credits put the mouse cursor over the classic button, and move around in a clockwise direction going Classic, Zen, Blitz, and Challenge. Repeat till the screen changes and the credits start to scroll. This can be done even if you did not unlock every mode.
Blitz Mode...