The King Of Fighters '99 Action Replay Codes (NTSC-U)
This page contains Action Replay cheat codes for The King Of Fighters '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 Action Replay 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 The King Of Fighters '99 Guides Index and choose a different section.
Slow Motion: 8008C15C 1EAA
Fighter's Speed Modifier
Normal: L1 + R1
Hyper: R1 + R2
D00C286A F3FF
80021B44 FFFF
D00C286A F3FF
80021B46 2442
D00C286A FCFF
80021B44 0000
D00C286A FCFF
80021B46 2402
(Player 1) Play As Boss - Works in all modes
Highlight Lori or Kyo and press L1 + X
Choose the shadowy image to play as the boss
D00BBCA0 0400
800B15CE 0001
D00BBCA0 0400
800B121E 0001