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Contents 1 Miscellaneous 2 Cheats and passwords 2.1 Health regeneration 2.2 Passwords 2.3 Game Genie codes

[edit] Miscellaneous

• If your opponent's health is very low towards the end of round 1, but you haven't knocked him down twice yet, it might be a good idea to avoid knocking him down and waiting to do it at the beginning of round 2. Then you have lots of time to knock him down twice more for a TKO. This strategy is most important against Mr. Sandman and Super Macho Man. Of course, if you have already knocked him down twice, you may as well knock him down a third time for a round 1 TKO.
• If your opponent gets knocked down and gets up on a count of 1, he will automatically fall down again as soon as you land an uppercut, even on a full life bar. This rule does not apply if the round ends before you knock him down again.
• Every boxer except King Hippo shares a body type with exactly one other opponent. This means that their bodies look exactly the same except for the colors and the head, and they use many of the same animation frames. Therefore, a telegraph that applies to one boxer will often apply to the other, although the timing may be different. These are the boxers who share bodies:
  • Glass Joe and Don Flamenco
  • Von Kaiser and Great Tiger
  • Bald Bull and Mr. Sandman
  • Soda Popinski and Super Macho Man
  • Piston Honda and Mike Tyson/Mr. Dream
• No opponent ever gets up on a count of nine, except the second time you fight Bald Bull, who always gets up on a count of nine.
• Soda Popinski was originally named Vodka Drunkenski in the arcade game Super Punch-Out!!. Strangely, his banter between rounds still suggests drunkenness. Either Nintendo wanted to avoid offending Russians, or perhaps more likely they just wanted to avoid references to alcohol.

[edit] Cheats and passwords

[edit] Health regeneration

After round 1 or 2, you can press while Doc is talking to you. You will see Doc pumping his fist faster. When you start the next round you will regain a bit of health. If your health meter is full or very close to it, you will lose health instead (this can be done before round 1 to make the match harder). The code can be activated only once per fight.

[edit] Passwords

These can be entered at the start screen by going down to continue, and pressing to start entering the code and to confirm each number. Use and to change the numbers.

Name	Code	Details
Major Circuit	005 737 5423	Major Circuit, with perfect play (Only KO or TKO before, no losses)
World Circuit	777 807 3454	World Circuit, with perfect play (Only KO or TKO before, no losses)
Super Macho Man	940 861 8538	99 wins, 0 losses
Piston Honda (rematch)	032 730 8442
Mike Tyson/Mr. Dream	007 373 5963	Mike Tyson/Mr. Dream; you don't actually get this code from the game
Another World Circuit	135 792 4680	Hold and press + after entering the code.
Busy signal	800 422 2602	Nintendo's old customer service number!
See the credits	106 113 0120	Hold and press + after entering the code.

Another World Circuit is a new way to take on the Major and World Circuit fighters. You play through the entire Major and World Circuit fighters (minus your first matches against Don Flamenco and Bald Bull) in one long circuit, and if you lose even one fight it's Game Over. Unfortunately, if you can already beat the World Circuit pretty easily, this will not provide much extra challenge, but it can make the game a little more interesting.

[edit] Game Genie codes

Code	Effect
AAVETLGE	Lets you knock down opponents in one hit. Doesn't work for all kinds of punches you can land, and does not work at all against King Hippo.
APGENP	Provides more opportunities for getting stars.
EANALL	Phantom punch knockdown.
KOAUTO	Changes opponents' colors and makes them easier to KO.
KOOUTO	Changes opponents' fighting patterns.
OGTZZZ	Puts a blue tint over the game.
OKLOSS	KO! mode.
OLTZZZ	Puts a purple tint over the game.
OXOULU	Ultimate KO! mode.
PGTZZZ	Puts a green tint over the game.
PTTZZZ	Uses black and white Game Boy colors.
SAYZEY	The Marios.
STTZZZ	Classic colors.
TYOULU	No three knockdown rule for most fights.
TZLOSS	Instant TKOs.
YATZEY	Makes the entire game blacked out, except for certain actions like getting hit, or when the opponent flashes.
YOZEAK	Classic mode.