Advance to next level and get infinite credits by Galoob
Game Genie
XE6A-BE3W
Always have maximum gun power by Galoob
Game Genie
AADT-AAEL
Gun Modifier by Viper187
Raw
FF8014:000?
Infinite credits by Galoob
Game Genie
RZ8A-A6V6
Infinite Gun Power by Viper187
Raw
FF801C:FFFF
Infinite Health by Viper187
Raw
FF801E:FFFF
Infinite Missiles by Viper187
Raw
FF8018:9999
Infinite rockets and shotgun shells on pick-up by Galoob
Game Genie
RZ8A-A6X0
Protection from most hazards by Galoob
Game Genie
RGJA-A60C
Skip Levels Pause Press B+C by Fanat
Raw
FFA0A6:00FF
Skip Levels Pause Press B+C by Fanat
Game Genie
 AK5T-AA4L
Start with 1 credit instead of 4 by Galoob
Game Genie
AE6A-BE3W
Start with 25 credits by Galoob
Game Genie
EY6A-BE3W
Start with 50 credits by Galoob
Game Genie
LA6A-BE3W
Start with 75 credits by Galoob
Game Genie
RY6A-BE3W
Start with LOTS of rockets by Galoob
Game Genie
XGGA-BA30
Unlimited Continues by Mr. Book
Raw
FF80CA:0004