Start With Infinite Lives
SLAIUZ
Keep Weapons After Losing A Life
GXIIUX
Start New Life With Machine Gun
PEIIXZ
Start New Life With Spread Gun
LEIIXZ
Start New Life With Laser
GEIIXZ
Start New Life With Fireball Gun
ZEIIXZ
P1 And P2 Start With 30 Lives
IPVGZGZE
P1 And P2 Have The 30 Lives Cheat Activated
AAVGTGZA
Activating The 30 Lives Cheat Gives You 99 Lives
LTVKAKIP
Weird Noise After You Die
IPPOPO
“You” Gun After You Die
AEIIXX
Less Normal Enemies That Show Up, And The Screen Is Invisibly Altered
KONTAA
Game Freezes When Bridge Starts To Explode
NONEOK
Stuck On The Very Left Side Of The Screen. Can Do Nothing But Shoot And Duck
KISSIT
Flipping “Fall Down” Jump
POTSIT
Flying Pods Fly Funny
TSKTSK
Stage Takes Longer To Start
XEEGAG
A Few Beeps After You Die
IZPOPO
One Beep After You Die
ITPOPO
Can’t Get Past The Title Screen
LUCKYX
The Ground Is One Step Lower Than It Should Be
AGEKIP
You Fall Thru Invisible Holes In The Ground
KASTLE
Scrambled Title Screen #1
POIPIP
Scrambled Title Screen #2
SKILLX
“Connecting” Music
SIKETO
The Guns In The Grey Boxes Look Funny
AAAAGG
Messes Up Sound And Pictures
POTATO
After You Die You Come Back With A Weird Gun
TEIIXZ
When You Die You Get An Extra Life
NYAIUZ
Each Stage Takes 5 Seconds Of Play
LUGKIS
No Gun After Death And Lots Of Baddies
IEIIXZ
Bubble Weapon And Lots Of Baddies
TEIIXZ
Disco Bee-Bob’N Mode!
TOASTY
I-Dare-You-To-Try-And-Beat-It-Like-This Mode
PAIIXZ
Double Cracker Gun Mode
PEIIXY
When You Walk, Your Legs Don’t Move
STYSTY
Sound Only when not Moving
XXXAAA
Alternate Music / Atari-Mode Contra
NNNAAA
When You Face To The Left You Slide Until You Hit The Side Of The Screen
TSTSTS
The Music Is Different
KANETX
Graphics Are Messed Up
PPPETX
Weird Music, And The Platforms On Level 1 Are Different
APEAPE
Colorful Lines Move Around On The Screen
KOLKOL
More Colorful Lines Move On The Screen
AEEKOL
1st Level Is A Little Different
SAGEPA
You Can Only Shoot Straight
PULUXU
Standing Enemies Float, And Some Various Flashing
NEPAEP
Makes A Sound When You Die
OPPOPP
Tons Of Points For Shooting Enemies
SXZGYK
The Exploding Bridge Is “Camouflaged”
XZYTLO
Player 1 Starts With Laser Gun (Game Map Is Altered)
XXLTLO
XXGTLO
1st Boss Harder To Kill
EPTILE
When The Bridge Explodes, You Can Still Walk On It
EOGKPN
For A High Score, It Shows 200
ZAOGEU
Enemies Shoot At You More
SPTAAN
Weapon Capsules Fly By Slower
OIKEAU
Bullets Will Travel Thru Weaker Enemies
KONVAL
Your Bullets Will Auto-Hit Any Enemy
KONTAK
Kill Any Enemy Or Boss With 1 Shot (Except For Base 1 And 2 Bosses)
KONTAL
Extra Lives Are Awarded For Killing Most Enemies
GITTEO
Characters Can Walk On Water
SLOVIA
Removes Lifebar Indicators
GOTGET
Play Game In Black And White Mode
OZNKTASX
YPNKYEVN