Unlock Hyper Mode: Complete 8 levels in Action mode.
Unlock Twilight Mode: Complete 17 levels in Classic mode.
Unlock Cognito Mode: Complete ALL 80 Puzzle mode worlds.
Unlock Finity Mode: Complete 280 levels of Endless mode.
Unlock Original Mode: At the 'Main' menu go to the 'Play Game' option and select the following features in order; Classic, Action, Endless, Puzzle. After a few cycles the message 'Please Wait' will appear on screen and a version of the game similar to the original Bejeweled will start.