MLB '99 - Last Name Modifier Codebreaker Codes (NTSC-U)

This page contains CodeBreaker cheat codes for MLB '99 (NTSC-U) for the Playstation 1. Depending on if you're playing this game on a physical console or an emulator will determine how you use the codes found on this page. People using a physical console will need to purchase a physical CodeBreaker device to use the codes.

Anyone who is using an Emulator will have a much easier time getting these codes to work (assuming your Emulator supports them). There are three popular choices for Emulation on the PS1, RetroArch, Duckstation and ePSXe. Follow the links provided to learn more about how to add/use these codes with the Emulator of your choice. If you don't see the code you want on this page I recommend you return to my MLB '99 Codebreaker Codes and choose a different section.

 

1st Letter Modifier: 3001040D 00??

2nd Letter Modifier: 3001040E 00??

3rd Letter Modifier: 3001040F 00??

4th Letter Modifier: 30010410 00??

5th Letter Modifier: 30010411 00??

6th Letter Modifier: 30010412 00??

7th Letter Modifier: 30010413 00??

8th Letter Modifier: 30010414 00??

9th Letter Modifier: 30010415 00??

10th Letter Modifier: 30010416 00??

11th Letter Modifier: 30010417 00??