1 AFAA-AAFY Start with 1 life
2 BFAA-AAFY Start with 9 lives
3 EZAA-AAFY Start with 25 lives
4 LBAA-AAFY Start with 50 lives
5 XFAA-AAFY Start with 99 lives
6 REXT-A6YR Infinite lives
7 AAXA-AAC8 Start with no grenades
8 BEXA-AAC8 Start with 9 grenades
9 XEXA-AAC8 Start with 99 grenades
10 XEXA-AWC8 Start with 999 grenades
11 AAXA-AADE Start with zero mines
12 BEXA-AADE Start with 9 mines
13 XEXA-AADE Start with 99 mines
14 XEXA-AWDE Start with 999 mines
15 AAXA-AADL Start with no power lines
16 BEXA-AADL Start with 9 power lines
17 XEXA-AADL Start with 99 power lines
18 XEXA-AWDL Start with 999 power lines
19 ABBA-AAAJ Start with no buzzsaws
20 AFBA-AAAJ Start with 1 buzzsaws
21 BFBA-AAAJ Start with 9 buzzsaws
22 AJZT-AA6L Infinite buzzsaws
23 ABGT-EWFT Start 1st level timer at 900
24 BAXA-BA4T Time goes by faster
25 AECA-AAHY Start with 1 continue
26 A2CA-AAHY Start with 6 continues
27 BECA-AAHY Start with 9 continues
28 AJ6T-AA7L Infinite continues
29 BAHT-BA2G Each crystal worth 8 instead of 1
30 C2HT-BA2G Each crystal worth 16 instead of 1
31 C2YA-AA64 Infinite energy
32 AALA-AAEL Always shoot grenades instead
 of bullets
33 AALA-AAEY Always shoot power lines
 instead of bullets
34 KJXA-BLZ0 + KEXA-BLZ2 Infinite time, grenades, mines,
 and power lines
35 SECA-BEXR Start in world 1, level 1.2
36 SECA-BJXR Start in world 1, level 1.3
37 SECA-BNXR Start in world 2, level 2.1
38 SECA-BTXR Start in world 2, level 2.2
39 SECA-BYXR Start in world 3, level 3.1
40 SECA-B2XR Start in world 3, level 3.2
41 SECA-B6XR Start in world 3, level 3.3
42 SECA-BAXR Start in world 4, level 4.1
43 AJCA-AA5J + 9TCA-BGMN + BECA-AADR Start in world 4, level 4.2
44 AJCA-AA5J + 9TCA-BGMN + BJCA-AADR Start in world 4, level 4.3
45 AJCA-AA5J + 9TCA-BGMN + BNCA-AADR Start in world 5, level 5.1
46 AJCA-AA5J + 9TCA-BGMN + BTCA-AADR Start in world 5, level 5.2
47 ANMT-BT6Y + REMT-A6Y0 Shoot multiple shots instead
 of single
48 BAHA-BA88 Each grenade token worth 8
49 EAHA-BA88 Each grenade token worth 20
50 BAHA-BA9G Each mine token worth 8
51 EAHA-BA9G Each mine token worth 20
52 BAHA-BA9R Each power line token worth 8
53 EAHA-BA9R Each power line token worth 20
54 RFZT-A604 Makes the Gauntlet easier
 to defeat
55 RF5A-A6W8 Makes Dead Head easier
 to defeat
56 RGHA-A60Y Makes Trash Monster easier
 to defeat
57 RGDA-A6VT Makes Mother Fish easier
 to defeat
58 BAZA-AA2G Force field lasts until the next
 level (after you get a force
 field token)