(song starts; for music modifier) by nensondubois
Game Genie
SASANTSZ
200 bullets on each new life by Galoob
Game Genie
EGKVKLZU
200 machine gun bullets on pick-up by Galoob
Game Genie
EKSTEAGV
300 machine gun and 300 normal bullets on pick-up by Galoob
Game Genie
SUOZPXVS
Don't Die by hybrid
Game Genie
SZSZGVSE
Don't Jump, Just Press Right To Make It Through A Level by Rick N. Bruns
Game Genie
YNXZIA
Fake Infinite Time (One's Digit) by Rune
Raw
059D:0?
Freeze Timer by terpsfan101
Raw
0058:3C
Gain fewer bullets on pick-up by Galoob
Game Genie
GOKVNAZL
Hit Anywhere by nolberto82
Game Genie
AKSZANEL
OXSZPNEX
ATUILYEI
Infinite Bullets by Rune, King_Canuckian
Raw
00A0:FF
Infinite Bullets by terpsfan101
Game Genie
SXKLYTSA
Infinite Continues by terpsfan101
Game Genie
SZSPLXVK
Infinite Continues by terpsfan101
Raw
05C5:03
Infinite Health by Rune
Raw
0089:02
Infinite Health (Bullets and grenades still kill you) by terpsfan101
Game Genie
SXVZAIVG
Infinite lives by Galoob
Game Genie
SZNTULVG
SZSTULVG
Infinite Lives by terpsfan101
Raw
0088:0A
Infinite Machine Gun Bullets by King_Canuckian
Raw
00A1:FF
Infinite Machine Gun Bullets by terpsfan101
Game Genie
SXVLGTSA
Infinite Time by King_Canuckian
Raw
0059:??
Infinite Time by terpsfan101
Game Genie
SZETTZVG
Invincibility by terpsfan101
Game Genie
AAXXXAZA
Jump in Midair by nolberto82
Game Genie
XOVXIVEX
NSVXGTAX
Self-replenishing bullets! by Galoob
Game Genie
ZLVITYPA
Start with 1 life by Galoob
Game Genie
PEOVLALA
Start with 1 life after continue by Galoob
Game Genie
PASPYZLA
Start with 200 bullets by Galoob
Game Genie
EKXVZAZU
Start with 2x more Health by terpsfan101
Game Genie
GEEVSAZA
Start with 3x more Health by terpsfan101
Game Genie
TEEVSAZA
Start with 4x more Health by Galoob
Game Genie
AEEVSAZE
Start with 6 lives by Galoob
Game Genie
TEOVLALA
Start with 6 lives after continue by Galoob
Game Genie
TASPYZLA
Start with 9 lives by Galoob
Game Genie
PEOVLALE
Start with 9 lives after continue by Galoob
Game Genie
PASPYZLE
Start with loads of ammunition! by Galoob
Game Genie
LEXTZAAA
LAKTKLAA
Stop timer by Galoob
Game Genie
SZEVYZVG
Title screen music modifier by nensondubois
Raw
8E69:??:86