- ZOMBIE MODE:
AT CHARACTER SELECT, PRESS LEFT, UP, RIGHT, DOWN, R, R, L.
- BIG GLOVES:
AT CHARACTER SELECT, PRESS LEFT, RIGHT, UP, DOWN, R, L.
- THIN MODE:
AT CHARACTER SELECT, PRESS RIGHT, RIGHT, UP, DOWN, RIGHT, R, L.
- FAT MODE:
AT CHARACTER SELECT, PRESS RIGHT, RIGHT, UP, DOWN, RIGHT, R, R, L.
- FASTER GAMEPLAY:
AT CHARACTER SELECT, PRESS RIGHT, RIGHT, UP, DOWN, RIGHT, R 4 TIMES, L. YOU’LL HEAR A BELL.
- HYPER SPEED MODE:
AT CHARACTER SELECT, PRESS LEFT, LEFT, DOWN, UP, DOWN, RIGHT, RIGHT, R 19 TIMES, L. YOU’LL HEAR A BELL.
- NEW YEARS BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R L. YOU’LL HEAR A BELL.
- VALENTINE BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R, R, L. YOU’LL HEAR A BELL.
- ST. PATRICKS BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 3 TIMES, L. YOU’LL HEAR A BELL.
- EASTER BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 4 TIMES, L. YOU’LL HEAR A BELL.
- IDEPENDENCE DAY BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 5 TIMES, L. YOU’LL HEAR A BELL.
- HALLOWEEN BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 6 TIMES, L. YOU’LL HEAR A BELL.
- THANKSGIVING BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 7 TIMES, L. YOU’LL HEAR A BELL.
- CHRISTMAS BOXING RING:
AT CHARACTER SELECT, PRESS RIGHT, UP, DOWN, DOWN, DOWN, R 8 TIMES, L. YOU’LL HEAR A BELL.
- SKIP TO CHAMPIONSHIP MATCH:
AT CHARACTER SELECT, PRESS L, DOWN, RIGHT, UP, LEFT, R 6 TIMES, L, R, R, L. YOU’LL HEAR A BELL.
- VIEW ENDING:
AT MAIN MENU, PRESS RIGHT, RIGHT, RIGHT, DOWN, R, L. YOU’LL HEAR A BELL.
- EXTRA CAMERA ANGLES:
AT MAIN MENU, PRESS R 20 TIMES, L, R, L, R 21 TIMES, L, R 18 TIMES, L, R 9 TIMES, L, R 14 TIMES, L, R 5 TIMES, L, LEFT, RIGHT, UP, DOWN, L. YOU’LL HEAR AN EXPLOSION. START GAME AND PAUSE IT TO FIND 15 NEW CAMERA ANGLES.
- INSTANT RUMBLE LEVEL 1:
PAUSE GAME, PRESS R, L, DOWN, UP, UP, LEFT, R, R, R, L.
- INSTANT RUMBLE LEVEL 2:
PAUSE GAME, PRESS R, R, L, DOWN, UP, UP, LEFT, R 4 TIMES, L.
- INSTANT RUMBLE LEVEL 3:
PAUSE GAME, PRESS L, R, R, L, R, L, R 4 TIMES, L, LEFT, RIGHT, UP, DOWN.
- OPENING SECRETS:
| CHAMPION OUTFITS | WIN AT CHAMPIONSHIP MODE. |
| FREAK E DEKE | BEAT ARCADE MODE. |
| MICHAEL JACKSON | BEAT ARCADE MODE TWICE. |
| G.C. THUNDER | BEAT ARCADE MODE 3 TIMES. |
| WILD "STUBBY" CORLEY | BEAT ARCADE MODE 4 TIMES. |
| SHAQUILLE O' NEAL | BEAT ARCADE MODE 5 TIMES. |
| FREEDOM BROCK | BEAT ARCADE MODE 6 TIMES.. |
| ROCKET SAMCHAY | BEAT ARCADE MODE 7 TIMES. |
| ROBOX RESE-4 | BEAT ARCADE MODE 8 TIMES. |
| BILL CLINTON | BEAT ARCADE MODE 9 TIMES. |
| HILLARY CLINTON | BEAT ARCADE MODE 10 TIMES. |
- HOLIDAY OUTFITS & RINGS:
TURN ON THE DREAMCAST WITH NO GAME. GO THE SETTINGS AND SELECT DATE/TIME THEN CHANGE THE DATE TO THE DATES LISTED.
| JOEY T (BABY NEW YEAR) | 01/01/2000 |
| LULU VALENTINES (SEXY) | 02/14/2000 |
| LEAPROCHON REF | 03/17/2000 |
| MAMA TUA (PLAYBOY BUNNY) | 04/23/2000 |
| G.C. THUNDER (UNCLE SAM) | 07/04/2000 |
| J.R. FLURRY (SKELETON) | 10/31/2000 |
| THANKSGIVING RING | 11/23/2000 |
| SELENE STRIKE (ELF) & RUMBLEMAN (SNOWMAN) |
12/25/2000 |