Cheat codes:
At the match-up screen, press Square, Triangle & Circle the indicated amount of times. Then press the d-pad as indicated. Example: 3-2-1 Down should be Square, Square, Square, Triangle, Triangle, Circle, Down.
| Extended Time For Codes | | 3-0-3 Up |
| Cheats Disabled | | 1-1-1 Down |
| Bone bat | | 0-0-1 Up |
| Ice bat | | 0-0-2 Up |
| Maximum speed | | 0-0-3 Left |
| Maximum batting | | 3-0-0 Left |
| No fatigue | | 3-4-3 Up |
| Maximum power | | 0-3-0 Left |
| Little League mode | | 1-0-1-Down |
| No contact mode | | 4-3-3 Left |
| Unlimited turbo | | 4-4-4 Down |
| Blade bat | | 0-0-3 Up |
| Mace bat | | 0-0-4 Left |
| Wiffle bat | | 0-0-4 Right |
| Log bat | | 0-0-4 Up |
| Spike bat | | 0-0-5 Up |
| Softball | | 2-4-2 Down |
| Rubber ball | | 2-4-2 Up |
| Midway Park | | 3-2-1 Down |
| Atlantis Stadium | | 3-2-1 Left |
| Empire Stadium | | 3-2-1 Right |
| Rocket Park | | 3-2-1 Up |
| Forbidden Stadium | | 3-3-3 Left |
| Coliseum | | 3-3-3 Up |
| Monument stadium | | 3-3-3 Down |
| Minotaur team | | 1-1-0 Down |
| Extra time after plays | | 1-2-3 Up |
| Small heads | | 2-0-0 Left |
| Big heads | | 2-0-0 Right |
| Tournament mode | | 1-1-1 Down |
| Scorpion team | | 1-1-2 Down |
| Lion team | | 2-2-0 Right |
| Pinto team | | 2-1-0 Right |
| Evil Clown team | | 2-1-1 Down |
| Rivera team | | 2-2-2 Up |
| Terry Fitzgerald team | | 3-3-3 Right |
| Oshlan team | | 2-2-2 Down |
| Gladiator team | | 1-1-3 Down |
| Sub-Zero team | | 1-2-2 Down |
| Horse team | | 2-1-1 Right |
| Eagle team | | 2-1-2 Right |
| Todd McFarlane team | | 2-2-2 Right |
| Alien team | | 2-3-1 Down |
| Casey team | | 2-3-3 Down |
Unlock the Season Video:
To unlock the Season video, complete a full season.
Unlock the Season Video:
To unlock the Challenge video, complete Challenge Mode.
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MLB SlugFest 20-04 Cheats at CheatingDome.com.
