1. BTPT-AN8A - Make start button a true pause button

2. JB2A-BYWE - More base income per turn

3. P30T-BYIN - Mines make more money

Ship-specific codes:

Androsynth:
4. JB4A-CACT - Superior bubbles

5. AWPB-RECE - Faster energy regeneration

Ariloulaleelay:
6. ARPB-RGD0 - Faster energy regeneration

7. CCPB-SADN - Increase crew to 16

Chenjesu:
8. BB9A-CAEA - More doggies allowed

9. ALPB-R8FG - Faster energy regeneration

Human:
10. AWPB-REG4 - Faster energy regeneration

11. AGFA-CAAJ - Missiles track better

Ilwrath:
12. CCJT-JAGJ - Indestructible flames

13. BLJT-CAG0 - Flame cone is twice as long

Mmrnmhrm:
14. FLPV-RYK0 - Maximum energy supply

15. ALLA-CABC - More maneuverable Y-wing form

Mycon:
16. BLPV-RCDR - Plasma torpedoes cost 1/2 normal

17. 7WSA-D938 - Crew regrowth cost 1/2 normal

Shofixti:
18. ARPV-RAFC - Continuous fire

19. BWPV-R2E2 - Increase crew to 12

Spathi:
20. AR0T-CAB8 - Forward shots do 3 points damage

21. ML0T-CAFL - Butt(ha, ha)missiles last 3x longer

Syreen:
22. ECPV-RAS8 - Double energy

23. AWR-BRCAL - Fire and scram faster

Umgah:
24. GLRB-RCB2 - Energy regeneration is 1/3 time

25. AGRB-RAB4 - Superior maneuverability

Urquan:
26. AXET-CAGC - Fighters shoot more often

27. GDDT-CADL - Fighters move faster

VUX
28. JCRB-RAE0 - Faster turning

29. ACRB-RCE8 - Move faster

Yehat:
30. HCRB-RAGJ - Move 1.5x faster

31. FCRB-RTRE - Doubles crew

Battle codes:

Asteroids:
32. CKYA-CA3R - No asteroids, faster play

33. CVYA-CAB8 - Lots of asteroids, slower play

34. H8NT-AAE6 - Superfast asteroids

Planets:
35. DKYA-CA52 - No planets

36. AZYA-CAER - Five planets

37. ACMA-AAHN - Planets have no gravity

38. RGVT-A6VW - Collision with planet is deadly

39. ACVT-AA3N - Collision with planet is harmless

Strategic codes:
40. C3TA-CA24 - Find precursor relics at most stars