The following are known Action Replay Codes for Giga Wing on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

P2 Reflective Force Always on
58873D31
00000003

P1 Infinite Lives
2C87292D
00000002

P2 Always Max power up
CFEFAD9E
00000003

P2 Infinite Lives
D068C9B9
00000002

P1 Always Max power up
FCBDDCEE
00000003

P1 Infinite Force Bombs
420E55A1
00000002

P2 Infinite Force Bombs
FEADDCE0
00000002

P1 Reflective Force Always on
8773C768
00000003