9 minute rounds by hybrid
Game Genie
PEKAZYLE
99 Knockdowns To TKO by Viper187
Game Genie
LTELILLA
Always Able To Do Star Punches by hybrid
Game Genie
ALVAYPEY
Always have stars by Phil The Hammer
Raw
0342:03
Always Lose By Controversial KO Without Fighting! by Daniel T
Game Genie
OZLOSS
Always Round 1 by hybrid
Game Genie
SXXXXPVT
Always Win By Split Decision Without Fighting! by Daniel T
Game Genie
KUZEAK
Another Different T.K.O. Code by Daniel T
Game Genie
AOIONS
Begin With Very Little Energy by Daniel T
Game Genie
KOAEEA
Both Boxers Start Off With No Energy! by Daniel T
Game Genie
NAPANA
Cannot Be Knocked Down by Radical Hacker
Raw
0005:00
Changes Opponent's Fighting Pattern by Daniel T
Game Genie
KOOUTO
Changes Rounds, Tyson's Punches Are Not As Strong by Daniel T
Game Genie
TAYEIT
CPU Always Ranks At #1 by Unknown
Raw
0009:09
CPU Fighter Modifier by Viper187
Raw
0001:0?
Energy Replenishment by Galoob
Game Genie
AGUELIGA
Enthusiastic Crowd And Mac's Left Upper Punches Are A Bit Off The Mark But Still Connect by Daniel T
Game Genie
KYLOSS
Glass Joe And Tyson Both Dodge Attacks, Something They Never Do! by Daniel T
Game Genie
KKOUTO
Harmless Opponents [This Can Be Good Or Bad] by Daniel T
Game Genie
KOOLYO
Hit Anywhere by nolberto82
Game Genie
INUAIZSY
hold up to 9 Stars by hybrid
Game Genie
PAVAVPLE
PAVAXPLE
Infinite Health by Parasyte
Game Genie
ATEALIXZ
Infinite Health by Viper187
Raw
0391:96
0392:96
Infinite Health by Viper187
Raw
0391:60
0392:60
Infinite Health by terpsfan101
Game Genie
GPVAGPLE
Infinite Hearts by Viper187
Raw
0324:55
Infinite Hearts by Viper187
Raw
0323:09
0324:09
Infinite Hearts Stays At 99 by hybrid
Game Genie
PAXEUPAE
Infinite Stars by Viper187
Raw
0342:03
Infinite Time by hybrid
Game Genie
SXOEYNVV
Instant Controversial TKO Code! by Daniel T
Game Genie
TZLOSS
Instant Loss! by Daniel T
Game Genie
UZLOSS
Instant Win! by Daniel T
Game Genie
YZLOSS
Invincibility by nolberto82
Game Genie
INUAIZSY
AEEAAAST
Lil Mac always has hearts by Phil The Hammer
Raw
0324:0A
Little Mac always has full stamina by Phil The Hammer
Raw
0391:60
Longer Pause Between Start Of Rounds And After Knock Downs by Daniel T
Game Genie
PILONS
Mac Always Ranks At #2 by Unknown
Raw
0008:01
Mac Begins With No Energy by Daniel T
Game Genie
ZAPEEE
Mac Snaps! Maximum Point Outburst by Daniel T
Game Genie
PGAAPG
Mac's Energy Does Not Run Down, However He Can Still Be Harmed by Daniel T
Game Genie
GIGEEE
Many Opponents Such As Great Tiger Stay Down For The Count After Being Knocked Down by Daniel T
Game Genie
SAPLLL
Mario Keeps On Saying "Fight!" by Daniel T
Game Genie
KGLOSS
Mario's Counting Is Extremely Quick, As Well As Mac's Victory Celebration by Daniel T
Game Genie
TATALL
Max Score (Hundred Thousands Digit) by Radical Hacker
Raw
03E9:09
Max Score (Hundredth Digit) by Radical Hacker
Raw
03EB:09
Max Score (Millionth Digit) by Radical Hacker
Raw
03E8:09
Max Score (One’s Digit) by Radical Hacker
Raw
03ED:09
Max Score (Tenth Digit) by Radical Hacker
Raw
03EC:09
Max Score (Thousandth Digit) by Radical Hacker
Raw
03EA:09
Max Score [Hundredth Digit] by Radical Hacker
Raw
03EB:09
Max Score [Millionth Digit] by Radical Hacker
Raw
03E9:09
Max Score [One's Digit] by Radical Hacker
Raw
03ED:09
Max Score [Tenth Digit] by Radical Hacker
Raw
03EC:09
Max Score [Thousandth Digit] by Radical Hacker
Raw
03EA:09
Messes Up Points And Opponents by Daniel T
Game Genie
ITPAYY
Never Ending Round by Daniel T
Game Genie
SAGEYN
Never Get T.K.O.'d (CPU) by Viper187
Raw
03CA:00
Never Get T.K.O.'d (P1) by Viper187
Raw
008F:00
Never Get TKO'd (CPU) by Viper187
Raw
03CA:00
Never Get TKO'd (P1) by Viper187
Raw
008F:00
Never Lose Hearts by Galoob
Game Genie
GZKETGST
Never Lose Stars by Galoob
Game Genie
ALNEVPEY
No Energy Replenishment For Oppenent by Galoob
Game Genie
SZSELPAX
No Music When Glass Joe Walks Forward by Memblers
Game Genie
AESOPI
No Three Knockdown Rule Against Almost Every Opponent by Daniel T
Game Genie
TYOULU
No Time! Some Of The Sound Is Messed Up by Daniel T
Game Genie
ANIELT
Normal Punches Do More Damage by Galoob
Game Genie
AAVETLGA
One Hit Knockdown! [Does Not Work On All Boxers] by Daniel T
Game Genie
EXSELL
One Punch Knocks Down Oppenent by Viper187
Raw
0398:00
0399:00
039A:00
One Punch Knocks Down Opponent by Viper187
Raw
0398:00
0399:00
039A:00
Only Mac's Energy Bar Runs Down by Daniel T
Game Genie
PGAAPS
Opponent can not be TKO'ed by hybrid
Game Genie
SXNULXVV
Opponent has zero stamina by Phil The Hammer
Raw
0398:00
Opponent Stays down by BigBossman
Raw
00C1:A3
Opponents Get Back Up With A Bit Less Energy by Daniel T
Game Genie
IOUSSS
Opponents Start with no Energy by hybrid
Game Genie
ATOEXESA
SXKAYKSE
Passkey Modifiers by Radical Hacker
Raw
0110:0?
0111:0?
0112:0?
0113:0?
0114:0?
0115:0?
0116:0?
0117:0?
0118:0?
0119:0?
Phantom Punch Knockdown! (A Cool Variation Of The One Hit Knockdown Code) by Daniel T
Game Genie
EANALL
Refill Stamina Between Rounds by Galoob
Game Genie
KVKAAGLA
Removes Opening Mike Tyson Screen by Daniel T
Game Genie
PXPXPX
Round Ends When One Of Mac's Punches Is Blocked by Daniel T
Game Genie
SIZEKO
Similar To The SAPLLL Code With A Few Changes And Sometimes Tyson Can Be KO'd In The 1st Round by Daniel T
Game Genie
AAPLLL
Similar To The SAPLLL Code With Some Differences And Tyson Can Be KO'd In The 3rd Round by Daniel T
Game Genie
OAPLLL
Similar To The SAPLLL Code, However Some Opponents Get Up With No Energy And Tyson Can Be KO'd In The 2nd Round by Daniel T
Game Genie
ZAPLLL
Skip Intro Screen by nolberto82
Game Genie
ENOZAZPE
Slows And Changes Music by Daniel T
Game Genie
STAYZK
Stars Are More Common by Daniel T
Game Genie
APGENP
Start Each Round With 3 Stars by Viper187
Game Genie
LASAEPAA
Starting Fight Modifier by Viper187
Raw
A47A:69
A47B:??
A47C:33
A47D:01
Starting Fight Modifier by Viper187
Raw
A47A:A9
A47B:??
A47C:85
A47D:01
Stop Timer by Viper187
Game Genie
XXXELNVA
SUSETNSO
Stop Timer by Viper187
Raw
0305:00
030E:00
Stop Timer by Viper187
Raw
0305:00
0304:00
0302:00
030E:00
Stunned Punches Do Less Damage by Galoob
Game Genie
STNAPUIV
Super Fast Rounds by Daniel T
Game Genie
POPEZY
Take Even Less Damage by Galoob
Game Genie
SZVALPAX
Take Less Damage by Galoob
Game Genie
SZVAAOIV
The Controversial KO Code! by Daniel T
Game Genie
OKLOSS
The TKO Code! by Daniel T
Game Genie
AXIONS
Time at zero by Phil The Hammer
Raw
0305:00
0306:00
0307:00
TKO With One Knockdown Every Opponent by Phil The Hammer, Viper187
Raw
03CA:02
03D1:02
Too Close For Comfort by Daniel T
Game Genie
TONILL
Ultimate K.O.! Code! by Daniel T
Game Genie
OXOULU
You cannot be TKO'ed by hybrid
Game Genie
SXXLLZVT