Timeline

z rules Unlock a secret stage: Insane
[will permanently be saved to your profile]

z really rules Unlock a secret stage: Insane II
[will permanently be saved to your profile]

chastity Unlock Faith stage
[will permanently be saved to your profile]

mcfly Unlock Time Machine mode
[will permanently be saved to your profile]

stalin Invincible Bonus Mode

zack Start the game with 1 bonus

nostradamus Start the game with 2 bonuses

davinci Start the game with 3 bonuses

jfk Start the game with 4 bonuses

bendis Start the game with 5 bonuses

copernic Start the game with 6 bonuses

einstein Skip a level
[will permanently be saved to your profile]

malcom x Unlock Everything
[will permanently be saved to your profile]

insane You will play Insane in Time Quest mode

z is insane You will play Insane II in Time Quest mode

faith You will play FaitH in Time Quest mode

bonnie and clyde Debug Mode on

reset d Reset some cheat codes entered
turns off all cheat codes except for the ones that
wrote to your saved profile

INSTALLATION:

1. Start the game.

2. At the Main Menu, hit the ENTER key on your keyboard.

It should print this on the screen == "Secret Mode: "

3. Enter a code:

Just type the text of a Cheat Code on your keyboard.

4. Note that there are "Cheat Codes" which seem to act as if they jump you to
a specific level:
modern = Level 1
...
void = Level 21
god = Level 22

However, they seem to have no effect, so we will not list them. Also, the
'einstein' code already allows you to skip levels.

-from TNT