Bonus Teams:

 At  the  Options  screen  hold L  and  press  C-Right, C-Left, C-Left,
 C-Right, C-Left, C-Left, C-Right, C-Left, C-Left.  If you did the code
 correctly a "1" should appear on the  10th  spot  from the left.  This
 will give you the old Minnesota, Quebec, Winnipeg and Hartford teams. 

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Choose Your Opponent:

 To choose your  opponent, highlight the team you wish to play against,
 then press  C-Right  three  times.  If you did it right, you'll hear a
 click. 

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Debug Mode:

 At the  Options  screen  press  C-Down + R, C-Left + R or C-Up + R.  A
 screen will appear where  you  can  modify  a 16-bit register. You can
 only alter the first 6 bits, but that's  enough  to change  the game's
 appearance.

 To alter the bits, use these controls: 

 C-Down + R:  changes head size
 C-Left + R:  changes body size
 C-Up + R:    changes height

 Here are a few examples: 

 100000: Stocky Players.
 010000: Stocky Players, Big Heads.
 110000: Stocky Players, Small Heads.
 001000: Small Players, Small Announcer.
 000100: Large Players, Large Announcer.
 000010: Crunched Players, Small Announcer.
 000001: Elongated Players, Large Announcer.
 110110- Large Players, Small Heads, Large Announcer
 010010- Crunched Players, Large Heads, Small Announcer
 010101- Large Players, Large Heads, Large Announcer
 010001- Elongated Players, Large Heads, Large Announcer

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Forfeit Game:

 To forfeit a game, press pause and enter the  OPTIONS  screen.  Hold L
 and press C-Left nine times. Resume play and you will lose 1 - 0. 

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Invisible Players:

 During the opening face off, pause the game and select Replay.  Make a
 player flash by pressing L or R, and while he's still  flashing, press
 the Z trigger button to make the player invisible. You can repeat this
 trick until the entire team has vanished! 

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Non-stop Fighting:

 At the  Options  screen,  hold L  and  press  C-Right, C-Left, C-Left,
 C-Right, C-Down, C-Up, C-Up, C-Down, C-Left, C-Right, C-Right, C-Left,
 C-Right, C-Left.  If you did this right you  should  get  into a fight
 every 5 to 20 seconds!

 Note: This code must be re-entered each period. 

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View Sponsors:

 Press Z while in the Options, Setup, or Audio menus to view all of the
 game's sponsors.