Nintendo 64 · cheat codes

Madden NFL 99 cheats & codes

139 codes for Madden NFL 99 on the Nintendo 64, including GameShark codes. The most useful 100 are listed below.

Madden NFL 99 GameShark codes

How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.

Effect	Code
Activator 1 P1	`D0066F2C 0000`
Activator 2 P1	`D0066F2D 0000`
Dual Activator P1	`D1066F2C 0000`
Activator 1 P2	`D0066F34 0000`
Activator 2 P2	`D0066F35 0000`
Dual Activator P2	`D1066F34 0000`
Activator 1 P3	`D0066F3C 0000`
Activator 2 P3	`D0066F3D 0000`
Dual Activator P3	`D1066F3C 0000`
Activator 1 P4	`D0066F44 0000`
Activator 2 P4	`D0066F45 0000`
Dual Activator P4	`D1066F44 0000`
Activator 1 P1 #2	`D0059A00 0000`
Activator 2 P1 #2	`D0059A01 0000`
Dual Activator P1 #2	`D1059A00 0000`
Activator 1 P2 #2	`D0059A06 0000`
Activator 2 P2 #2	`D0059A07 0000`
Dual Activator P2 #2	`D1059A06 0000`
Activator 1 P3 #2	`D0059A0C 0000`
Activator 2 P3 #2	`D0059A0D 0000`
Dual Activator P3 #2	`D1059A0C 0000`
Activator 1 P4 #2	`D0059A12 0000`
Activator 2 P4 #2	`D0059A13 0000`
Dual Activator P4 #2	`D1059A12 0000`
Control Stick Activator 1 P1	`D0066F2E 0000`
Control Stick Activator 2 P1	`D0066F2F 0000`
Dual Control Stick Activator P1	`D1066F2E 0000`
Control Stick Activator 1 P2	`D0066F36 0000`
Control Stick Activator 2 P2	`D0066F37 0000`
Dual Control Stick Activator P2	`D1066F36 0000`
Control Stick Activator 1 P3	`D0066F3E 0000`
Control Stick Activator 2 P3	`D0066F3F 0000`
Dual Control Stick Activator P3	`D1066F3E 0000`
Control Stick Activator 1 P4	`D0066F46 0000`
Control Stick Activator 2 P4	`D0066F47 0000`
Dual Control Stick Activator P4	`D1066F46 0000`
Control Stick Activator 1 P1 #2	`D0059A02 0000`
Control Stick Activator 2 P1 #2	`D0059A03 0000`
Dual Control Stick Activator P1 #2	`D1059A02 0000`
Control Stick Activator 1 P2 #2	`D0059A08 0000`
Control Stick Activator 2 P2 #2	`D0059A09 0000`
Dual Control Stick Activator P2 #2	`D1059A08 0000`
Control Stick Activator 1 P3 #2	`D0059A0E 0000`
Control Stick Activator 2 P3 #2	`D0059A0F 0000`
Dual Control Stick Activator P3 #2	`D1059A0E 0000`
Control Stick Activator 1 P4 #2	`D0059A14 0000`
Control Stick Activator 2 P4 #2	`D0059A15 0000`
Dual Control Stick Activator P4 #2	`D1059A14 0000`
Infinite Time Outs Home Team	`8005CF89 0003`
Infinite Time Outs Away Team	`8005FA49 0003`
No Time-Outs Home Team	`8005CF89 0000`
No Time-Outs Away Team	`8005FA49 0000`
Home Team Scores 50	`8005CF87 0032`
Home Team Scores 0	`8005CF87 0000`
Away Team Scores 50	`8005FA47 0032`
Away Team Scores 0	`8005FA47 0000`
Enable All Stadiums (Cheat Device 3.0 or Higher Needed!)	`50000801 0000 8004A7F0 00FF`
Enable All Teams (Cheat Device 3.0 or Higher Needed!)	`50000E01 0000 8004ADD0 00FF`
Extra Stadiums	`8104A7F0 FFFF 8104A7F2 FFFF 8104A7F4 FFFF 8104A7F6 FFFF`
Extra Teams	`8104ADD0 FFFF 8104ADD2 FFFF 8104ADD4 FFFF 8104ADD6 FFFF 8104ADD8 FFFF 8104ADDA FFFF 8104ADDC FFFF`
Home Team Score Modifier	`8005CF87 0000`
Away Team Score Modifier	`8005FA47 0000`
Timer Modifier	`81061276 0000`
Stop Timer	`8107343C 2400`
Timer Speed Modifier (Default FFFF)	`8107343A 0000`
Quarter Length Modifier	`81072E94 2403 81072E96 0000`
Quarter Length Modifier (Alternate)	`810A8888 2403 810A888A 0000`
Quarter Length Modifier - 1 Minute Option	`D10D09C0 003C 810D09C0 0000`
Quarter Length Modifier - 2 Minute Option	`D10D09C2 0078 810D09C2 0000`
Quarter Length Modifier - 3 Minute Option	`D10D09C4 00B4 810D09C4 0000`
Quarter Length Modifier - 4 Minute Option	`D10D09C6 00F0 810D09C6 0000`
Quarter Length Modifier - 5 Minute Option	`D10D09C8 012C 810D09C8 0000`
Quarter Length Modifier - 6 Minute Option	`D10D09CA 0168 810D09CA 0000`
Quarter Length Modifier - 7 Minute Option	`D10D09CC 01A4 810D09CC 0000`
Quarter Length Modifier - 8 Minute Option	`D10D09CE 01E0 810D09CE 0000`
Quarter Length Modifier - 9 Minute Option	`D10D09D0 021C 810D09D0 0000`
Quarter Length Modifier - 10 Minute Option	`D10D09D2 0258 810D09D2 0000`
Quarter Length Modifier - 11 Minute Option	`D10D09D4 0294 810D09D4 0000`
Quarter Length Modifier - 12 Minute Option	`D10D09D6 02D0 810D09D6 0000`
Quarter Length Modifier - 13 Minute Option	`D10D09D8 030C 810D09D8 0000`
Quarter Length Modifier - 14 Minute Option	`D10D09DA 0348 810D09DA 0000`
Quarter Length Modifier - 15 Minute Option	`D10D09DC 0384 810D09DC 0000`
Infinite Time Outs - Both Teams	`81075D00 2400`
Infinite Time Outs - Both Teams (Alternate)	`81075CF8 2400`
Gain Time Outs Instead Of Losing Them - Both Teams	`81075CFA 0001`
Starting Number Of Time Outs Modifier - Both Teams	`81029A7E 0000`
Max 1st Position Attribute	`883FFEFF 0063`
Max 2nd Position Attribute	`883FFF01 0063`
Max 3rd Position Attribute	`883FFF03 0063`
Max 4th Position Attribute	`883FFF05 0063`
Max 5th Position Attribute	`883FFF07 0063`
Max Str	`883FFF17 0063`
Max Acc	`883FFF1D 0063`
Max Awr	`883FFF23 0063`
Max Thp	`883FFF25 0063`
Max Tha	`883FFF27 0063`
Max Kpw	`883FFF29 0063`
Max Kac	`883FFF2B 0063`
Max Tak	`883FFF2D 0063`
Max Imp	`883FFF2F 0063`

Showing 100 of 139 codes.

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.

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Back to Madden NFL 99: is it worth playing?

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.