If you lose a life and the Prince disappears, switch codes off and then on and he will reappear.

1. 004 03B 19E - Infinite time

2. 2D2 08F 19A - 45-min. game

3. 142 08F 19A - 20-min. game

4. 0A2 08F 19A - 10-min. game

* Additional health units only show up when you enter game
5. 081 38C E66 - *Start with more health units--select options screen, move cursor down to health units, press 1 button 3x for 6 health units, 4x for 7 health units, 5x for 8 health units(maximum)

6. 001 E9E 3BE - Don't lose health units when you drop off some ledges, you do lose additional units but won't go below 3

7. 049-4ED-E66 - Start on level 2

8. 059-4ED-E66 - Start on level 3

9. 069-4ED-E66 - Start on level 4

10. 079-4ED-E66 - Start on level 5

11. 089-4ED-E66 - Start on level 6

12. 099-4ED-E66 - Start on level 7

13. 0A9-4ED-E66 - Start on level 8

14. 0B9-4ED-E66 - Start on level 9

15. 0C9-4ED-E66 - Start on level 10

16. 0D9-4ED-E66 - Start on level 11

17. 0E9-4ED-E66 - Start on level 12

18. 0F9-4ED-E66 - Start on level 13

19. 109-4ED-E66 - Walk all the way to the left to see ending

- Infinite time, 10 minute game, Don't lose health units when you drop off some ledges, you do lose additional units but won't go below three.