1. WNEA-BE4Y - Start with 1 life

2. WJEA-BE4Y - Start with 2 lives

3. WAEA-BE4Y - Start with 4 lives

4. WTEA-BE4Y - Start with 8 lives

5. TNEA-BE4Y - Start with 11 lives

6. RE4A-A6VJ - Infinite lives

7. RG2A-A61W - Never lose health(spikes, fire, etc. will still kill you)

8. AB6A-EADL - Start with 0 continues

9. AF6A-EADL - Start with 1 continue

10. AZ6A-EADL - Start with 5 continues

11. BK6A-EADL - Start with 10 continues

12. AVVA-EA3Y - Infinite continues

13. AYEA-AADR + AY6A-AAD0 - Get extra lives more easily

14. RE6A-A6W6 - No extra life for 20,000 points

15. ABTA-CAHJ - Each star found worth 0 stars

16. AKTA-CAHJ - Each star found worth 2 stars

17. AZTA-CAHJ - Each star found worth 5 stars

18. BKTA-CAHJ - Each star found worth 10 stars

19. RHDA-A6YN - Infinite stars if you have some

20. AXDA-AA6J - Infinite stars even if you have none

21. RE8A-A6Z2 - Timer doesn't run

22. ABSA-DA62 - Finding a clock adds 0 minutes to timer

23. AKSA-DA62 - Finding a clock adds 2 minutes to timer

24. AVSA-DA62 - Finding a clock adds 4 minutes to timer

25. BBSA-DA62 - Finding a clock adds 8 minutes to timer

26. 9YLA-D976 - Jump lower than normal while standing still

27. 9ALA-D976 - Jump a little higher than normal while standing still

28. 8TLA-D976 - Jump higher than normal while standing still

29. 8ALA-D976 - Jump much higher than normal while standing still

30. 9YKA-D93Y - Jump lower than normal while running

31. 9AKA-D93Y - Jump a little higher than normal while running

32. 8TKA-D93Y - Jump higher than normal while running

33. 8AKA-D93Y - Jump much higher than normal while running

- Infinite lives, Each star found worth ten, Timer doesn't run.