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Madden NFL '99 Action Replay Codes (USA)

This page contains the Action Replay codes that I have for Madden NFL '99 (USA), a game for the Nintendo 64. If you are playing on a physical N64 console then you will need to purchase a physical Action Replay device to use the codes you find on this page and website. From what I have read and seen both of these cheat devices have cross compatibility.

For those of you out there using an Emulator such as Project 64, you can typically add cheats by clicking on a tab at the top of your Emulator that will lead you to a section where you can add codes. Anyone who is using the Project 64 Emulator should check out my How to Setup Codes on Project 64 Guide for more information on how to get cheats working.

If you don't see the cheats you're looking for on this page I recommend you return to my Madden NFL '99 Guides and Walkthroughs page and choose a different section.


Stop Timer: 8107343C 2400

(Both Teams) Gain Time Outs Instead of Losing Them: 81075CFA 0001

(Both Teams) Infinite Time Outs: 81075D00 2400

(Both Teams) Alternate Infinite Time Outs: 81075CF8 2400

(Both Teams) Starting Number of Time Outs Modifier: 81029A7E ????

Timer Modifier: 81061276 ????

Timer Speed Modifier: 8107343A ????
Default value is FFFF


Enable All Stadiums

50000801 0000
8004A7F0 00FF


Enable All Teams

50000E01 0000
8004ADD0 00FF


Can't Be Tackled (Hold R)

8106B5F0 0C0F
8106B5F2 FFF4
813FFFD0 8602
813FFFD2 6F2C
813FFFD4 3042
813FFFD6 0010
813FFFD8 1040
813FFFDA 0002
813FFFDC 3402
813FFFDE 0003
813FFFE0 3402
813FFFE2 0001
813FFFE4 8E23
813FFFE6 0034
813FFFE8 A062
813FFFEA 0016
813FFFEC 8C62
813FFFEE 0014
813FFFF0 03E0
813FFFF2 0008
813FFFF4 3C03
813FFFF6 0040


Quarter Length Modifier

81072E94 2403
81072E96 ????


(Alternate) Quarter Length Modifier

810A8888 2403
810A888A ????