Cheat Codes:
Activate the following cheats by entering the corresponding codes during gameplay. Note: Repeat the code to disable it:

CHEAT FUNCTION – CHEAT CODE
Toggle border display – noframe
Original?Bejeweled?gems – oldskool
Winter background – xmas
Space background – starfield
Colorless gems – blackandwhite
Green mode – greenscreen
Slow motion1 – slomo
Amber mode – amberscreen
Normal colors – normal
Gems switch colors – colorswap
Matrix?style background – network
Wavy background – nausea

Original mode:
At the menu screen, use the mouse to move in a clockwise circle on the Classic, Action, Endless and Puzzle mode selection buttons (in that order). Note: Make a circular motion while making sure each is touched by the pointer. Keep repeating the circular motion until the original mode game starts.

Unlockables:
Unlock the following bonuses by performing the corresponding tasks:

BONUS – HOW TO UNLOCK
Cognito levels – Complete all levels in puzzle mode.
Finity mode – Complete Endless mode level 280.
Hyper mode – Complete action level 9.
Twilight mode – Complete classic level 18.

Speed up Endless mode:
Open config.xml in Notepad and change the values of the last 2 lines, 500 and 150 to 1. After that, save and watch the game fly from one level to the next.

Classic-Style Gems:
To change the gems to the ones used in the original Bejeweled/Diamond Mine online game, type in the code “oldskool” anytime during gameplay.