FIFA International Soccer Classic
Sega Genesis / Mega Drive · cheat codes
Greatest Heavyweights cheats & codes
44 codes for Greatest Heavyweights on the Sega Genesis / Mega Drive, including Action Replay codes.
Greatest Heavyweights Action Replay codes
How to use: Datel's Action Replay sat between the console and the game. Enter codes on its menu before starting the game, or paste them into your emulator's cheat menu.
| Effect | Code |
|---|---|
| Infinite Power | FFF1A
0000D |
| Infinite Speed | FFF1A
2000D |
| Infinite Stamina | FFF1A
4000D |
Greatest Heavyweights Other codes
How to use: Additional codes collected by the community. Enter them through your emulator's cheat menu, choosing the format that matches your emulator.
| Effect | Code |
|---|---|
| Rounds are 1 minute | BJ6A-ACD6 |
| Rounds are 2 minutes | BJ6A-AED6 |
| Rounds are 4 minutes | BJ6A-AJD6 |
| Rounds are 6 minutes | BJ6A-AND6 |
| Rounds are 9 minutes | BJ6A-AWD6 |
| Rounds are infinitely long (must win by knockout) | CTXT-AA46 |
| Infinite rounds (must win by knockout) | AJ4T-AA2A |
| Set attributes to whatever you want when creating a new boxer | RH7A-A6YA |
| Attributes aren't reduced after a fight | RH9A-A6TE |
| Pick as many training items as you want | RH9T-A6VN
BM9T-AA9W |
| Infinite Time | ANXT-AACN |
| Developed For Use Only With Ntsc Genesis System | AEBT-AATW |
| Player 2's face is missing (while boxing) | BBAA-BALT |
| Automatically skips the "ready to Rumble" introduction | BADT-AAMT |
| Leaves off the last letter of the name of both boxers (don't know if this can be used to rename boxers or not) | TBAT-AAER |
| Fast Mode | KFKA-AACC |
| Hit The CPU Anywhere | JVJA-AAXA |
| Player 1 Is Invincible And Can Hit Anywhere | 3ZCT-B3LC |
| Player 2 Is Invincible And Can Hit Anywhere | 33CT-BZLC |
| Blocks Don't Work | E3CT-AA74 |
| Infinite Power | FFF1A0:0D80 |
| Infinite Speed | FFF1A2:0D80 |
| Infinite Stamina | FFF1A4:0D80 |
| Can Never Be Knocked Down Or Stun When Hit | AVJA-AA2J |
| no Introduction On the Gameplay | AATA-AA1N |
| Color code 1 | 8JXA-AASJ |
| Both Players Has Powerful Punches | AASA-AAA2 |
| Always Win The Fight | AAYA-AA3R |
| Only Created Boxers Fight Fast | AART-AAT0 |
| All modes are for 2 Players | FFFDE7:0001 |
| Enables Picking All Training Items | FFF951:0008 |
| Rounds Only Last a Few Seconds | FFF039:0000 |
| Player 1 Never Gets Knocked Down & can take Massive Damage | FFF112:0001 |
| Player 2 Never Gets Knocked Down & can take Massive Damage | FFF1F2:0001 |
| Player 1's Health Doesn't Regenerate | FFF118:0000 |
| Player 2's Health Doesn't Regenerate | FFF1F8:0000 |
| Fight any Ranked Opponent in Career Mode | FFF1AA:001E |
| P1 Infinite Health | FFF112:0999 |
| P2 Infinite Health | FFF1F2:0999 |
| Freeze Timer | FFF03A:0024 |
| Go to Secret Cheat Menu before every Fight | ATJA-CA58 |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
Greatest Heavyweights walkthroughs & guides
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Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.