Expert mode:
Select single player mode and choose the "Vs. Com" option. Hold Up + Select and press A at the difficulty selection screen.

Fight against Bowser in challenge mode:
Enter 78RN5B?8 as a password.

Final super-challenge mode opponent with all characters:
Enter SY?L5B7! as a password.

Bonus borders:
Note: This code requires game play on the SNES using a Super Game Boy cartridge.

Yoshi border
Hold Down and press A at the title screen.

Volcano border
Hold Left and press A at the title screen.

Forest border
Hold Up and press A at the title screen.

M.C. Escher-style border
Hold Down and press Start at the title screen.

Cloud border
Hold Left and press Start at the title screen.

Green moon border
Hold Up and press Start at the title screen.

Level	Easy	Normal	Extra
1-1		00!JJ060	J0!J0060
1-2	84MJJ06L	00HJ0160	J0HJJ150
1-3	564J01FL	00!JJ150	J0!J0150
1-4	0BPJJ1WL	00HJ0250	J0HJJ240
1-5	5GDJJ2ZM	00!JJ240	J0!J0240
1-6	CMKJ02ZM	00HJ0340	J0HJJ330
1-7	2Q7JJCXM	00!JJ330	J0!J0330
1-8	GL!JJXTM	00HJ0430	J0HJJ420
1-9	FRCJ0YTM	00!JJ420	J0!J0420
1-10		00HJ0520	J0HJJ510
2-1		00!000G0	J0!0J0F0
2-2		00H0J1F0	J0H001F0
2-3		00!001F0	J0!0J1D0
2-4		00H0J2D0	J0H002D0
2-5		00!002D0	J0!0J2C0
2-6		00H0J3C0	J0H003C0
2-7		00!003C0	J0!0J3B0
2-8		00H0J4B0	J0H004B0
2-9		00!004B0	J0!0J490
2-10		00H0J590	J0H00590
3-1		00!JJ0F0	J0!J00F0
3-2		00HJ01F0	J0HJJ1D0
3-3		00!JJ1D0	J0!J01D0
3-4		00HJ02D0	J0HJJ2C0
3-5		00!JJ2C0	J0!J02C0
3-6		00HJ03C0	J0HJJ3B0
3-7		00!JJ3B0	J0!J03B0
3-8		00HJ04B0	J0HJJ490
3-9		00!JJ490	J0!J0490
3-10		00HJ0590	J0HJJ580
4-1		00!000P0	J0!0J0N0
4-2		00H0J1N0	J0H001N0
4-3		00!001N0	J0!0J1M0
4-4		00H0J2M0	J0H002M0
4-5		00!002M0	J0!0J2L0
4-6		00H0J3L0	J0H003L0
4-7		00!003L0	J0!0J3K0
4-8		00H0J4K0	J0H004K0
4-9		00!004K0	J0!0J4J0
4-10		00H0J5J0	J0H005J0
5-1		00!JJ0N0	J0!J00N0
5-2		00HJ01N0	J0HJJ1M0
5-3		00!JJ1M0	J0!J01M0
5-4		00HJ02M0	J0HJJ2L0
5-5		00!JJ2L0	J0!J02L0
5-6		00HJ03L0	J0HJJ3K0
5-7		00!JJ3K0	J0!J03K0
5-8		00HJ04K0	J0HJJ4J0
5-9		00!JJ4J0	J0!J04J0
5-10		00HJ05J0	J0HJJ5R0
6-1		00!000Y0	J0!0J0X0
6-2		00H0J1X0	J0H001X0
6-3		00!001X0	J0!0J1W0
6-4		00H0J2W0	J0H002W0
6-5		00!002W0	J0!0J2V0
6-6		00H0J3V0	J0H003V0
6-7		00!003V0	J0!0J3T0
6-08		00H0J4T0	J0H004T0
6-9		00!004T0	J0!0J4!0
6-10		00H0J5!0	J0H005!0