NFL Gameday '99 Codebreaker Codes (NTSC-U)
This page contains CodeBreaker cheat codes for NFL Gameday '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). One of the most popular Emulators for the Ps1 is ePSXe and if you'd like to learn how to use the codes on this page for that Emulator, check out my how to get cheat codes to work with ePSXe guide. If you don't see the code you want on this page I recommend you return to my NFL Gameday '99 Guides Index and choose a different section.
Away Team Stats Modifier Codes
Home Team Stats Modifier Codes
Always Down Modifier (01-04): 801089DC 00??
Away Team Touch Down's Score Modifier: 8005FF44 00??
Away Team Safety's Score Modifier: 8005FACC 00??
Away Team Field Goal's Score Modifier: 8005FCEC 00??
Home Team Touch Down's Score Modifier: 8005FF18 00??
Home Team Safety's Score Modifier: 8005FB08 00??
Home Team Field Goal's Score Modifier: 8005FCC0 00??
2-Point Conversion's Score Modifier: 8005DA3C 00??
Extra Point's Score Modifier: 8005DB68 00??
Home Team Score Modifier
80108456 ????
801088F0 ????
Away Team Score Modifier
80108458 ????
801088F4 ????
Max Endurance
80052A04 000B
80052A06 2414
Max Vertical
80052A18 000B
80052A1A 240D
Max Blocking
80052A28 000B
80052A2A 240F
Max Hands
80052A48 000B
80052A4A 240A
Max Tackling
80052A54 000B
80052A56 2405
Max Accuracy
80052A58 000B
80052A5A 2411
Max Throwing
80052A7C 000B
80052A7E 2412
Max Break Tackle
80052A8C 000B
80052A8E 240C
Max Durability
80052A9C 000B
80052A9E 240E
P1 Press R2 & Select For Home Score Increase
D0144D02 FDFE
10108456 0001
D0144D02 FDFE
101088F0 0001
P1 Press R1 & Select For Home Score Decrease
D0144D02 F7FE
11108456 0001
D0144D02 F7FE
111088F0 0001
P1 Press L2 & Select For Away Scare Increase
D0144D02 FEFE
10108458 0001
D0144D02 FEFE
101088F4 0001
P1 Press L1 & Select For Away Score Decrease
D0144D02 FBFE
11108458 0001
D0144D02 FBFE
111088F4 0001