Cheat Gradius Galaxies GBA
| # | Description | Code |
| 1E | Enable Code (Must Be On) | 0000C984 000A 10000914 0007 |
| 1 | Invincible | 83004D90 0001 |
| 2 | Infinite Lives | 83004D46 0009 |
| 3 | Quick Score Gain | 83004D3C FFFF |
| 4 | Max Score | 83004D3C 423F 83004D3E 000F |
| 5 | Super Speed Space Ship | 33004D9D 0004 |
| 6 | Have All Powerups | 83003A26 0000 33004DA8 0007 |
| 7 | Always Full Shield | 33005984 0009 |
Manual Mode Codes
| ||
| 8 | Press Select For Speedup Option | 74000130 03FB 33004DA8 0001 |
| 9 | Press Select+Up For Missiles Option | 74000130 03BB 33004DA8 0002 |
| 10 | Press Select+Down For Double Option | 74000130 037B 33004DA8 0003 |
| 11 | Press Select+Left For Laser Option | 74000130 03DB 33004DA8 0004 |
| 12 | Press Select+Right For Muliple Option | 74000130 03EB 33004DA8 0005 |
| 13 | Press Select+Left Trigger For Shield Option | 74000130 01FB 33004DA8 0006 |
| 14 | Unlock Stages (Easy) | 83004C88 FFFF 83004C8A FFFF |
| 15 | Unlock Stages (Normal) | 83004C8C FFFF 83004C8E FFFF |
| 16 | Unlock Stages (Hard) | 83004C90 FFFF 83004C92 FFFF |
| 17 | Unlock All Stages | 43004C88 FFFF 00000006 0002 |
Start On Stage Codes
| ||
| 18 | Stage 1-2 | 73004D1C 0000 33004D1C 0001 |
| 19 | Stage 1-3 | 73004D1C 0000 33004D1C 0002 |
| 20 | Stage 1-4 | 73004D1C 0000 33004D1C 0003 |
| 21 | Stage 1-5 | 73004D1C 0000 33004D1C 0004 |
| 22 | Stage 2-1 | 73004D1C 0000 33004D1C 0005 |
| 23 | Stage 2-2 | 73004D1C 0000 33004D1C 0006 |
| 24 | Stage 2-3 | 73004D1C 0000 33004D1C 0007 |
| 25 | Stage 2-4 | 73004D1C 0000 33004D1C 0008 |
| 26 | Stage 2-5 | 73004D1C 0000 33004D1C 0009 |
| 27 | Stage 2-6 | 73004D1C 0000 33004D1C 000A |
| 28 | Stage 3-1 | 73004D1C 0000 33004D1C 000B |
| 29 | Stage 3-2 | 73004D1C 0000 33004D1C 000C |
| 30 | Stage 3-3 | 73004D1C 0000 33004D1C 000D |
| 31 | Stage 3-4 | 73004D1C 0000 33004D1C 000E |
| 32 | Stage 4-1 | 73004D1C 0000 33004D1C 000F |
| 33 | Stage 4-2 | 73004D1C 0000 33004D1C 0010 |
| 34 | Stage 4-3 | 73004D1C 0000 33004D1C 0011 |
| 35 | Stage 4-4 | 73004D1C 0000 33004D1C 0012 |
| 36 | Stage 4-5 | 73004D1C 0000 33004D1C 0013 |
| 37 | Stage 4-6 | 73004D1C 0000 33004D1C 0014 |
| 38 | Stage 5-1 | 73004D1C 0000 33004D1C 0015 |
| 39 | Stage 5-2 | 73004D1C 0000 33004D1C 0016 |
| 40 | Stage 5-3 | 73004D1C 0000 33004D1C 0017 |
| 41 | Stage 5-4 | 73004D1C 0000 33004D1C 0018 |
| 42 | Stage 5-5 | 73004D1C 0000 33004D1C 0019 |
| 43 | Stage 6-1 | 73004D1C 0000 33004D1C 001A |
| 44 | Stage 6-2 | 73004D1C 0000 33004D1C 001B |
| 45 | Stage 6-3 | 73004D1C 0000 33004D1C 001C |
| 46 | Stage 6-4 | 73004D1C 0000 33004D1C 001D |
| 47 | Stage 7-1 | 73004D1C 0000 33004D1C 001E |
| 48 | Stage 7-2 | 73004D1C 0000 33004D1C 001F |
| 49 | Stage 7-3 | 73004D1C 0000 33004D1C 0020 |
| 50 | Stage 7-4 | 73004D1C 0000 33004D1C 0021 |
| 51 | Stage 7-5 | 73004D1C 0000 33004D1C 0022 |
| 52 | Stage 8-1 | 73004D1C 0000 33004D1C 0023 |
| 53 | Stage 8-2 | 73004D1C 0000 33004D1C 0024 |
| 54 | Stage 8-3 | 73004D1C 0000 33004D1C 0025 |
| 55 | Stage 8-4 | 73004D1C 0000 33004D1C 0026 |
| 56 | Stage 8-5 | 73004D1C 0000 33004D1C 0027 |
| 57 | Stage 8-6 | 73004D1C 0000 33004D1C 0028 |
| 58 | Stage 8-7 | 73004D1C 0000 33004D1C 0029 |
| 59 | Stage 8-8 | 73004D1C 0000 33004D1C 002A |
| 60 | Stage 8-9 | 73004D1C 0000 33004D1C 002B |
| 61 | Stage 8-10 | 73004D1C 0000 33004D1C 002C |
| 62 | Stage 8-11 | 73004D1C 0000 33004D1C 002D |
| 63 | Stage 8-12 | 73004D1C 0000 33004D1C 002E |
| 64 | Bonus Stage (?) | 73004D1C 0000 33004D1C 0030 |
