Greatest Heavyweights – Game Genie Codes
The following are known Game Genie Codes for Greatest Heavyweights on SEGA Genesis.
Rounds are 1 minute
Rounds are 2 minutes
Rounds are 4 minutes
Rounds are 6 minutes
Rounds are 9 minutes
Rounds are infinitely long so you must win by knockout
Infinite rounds and you must win by knockout
Set attributes to whatever you want when creating a new boxer
Attributes are not reduced after a fight
- RH9T-A6VN + BM9T-AA9W
Pick as many training items as you want
Do you know any additional codes for this game? Is there an error listed above? Let us know about it and we’ll update the list.