The King of Fighters '94
Blood Code (Home Version)
When the high scores appear on screen, press 
+
on controller one and 
+
on controller two at the same time. Then press 
.
This works only with the Home version of the game!
The King of Fighters '95
Blood Code (Home Version)
When the high scores appear on screen, press + on controller one and + on controller two at the same time. Then press .
This works only with the Home version of the game!
Boss Code
Hold down at the Team Edit Screen.
While holding down, press 
.
Saisyu Kusanagi and Omega Rugal will appear on either side of the counter.
The King of Fighters '96
Boss Code (CD Version)
Hold down at the Team Edit Screen.
While holding down, press .
This will unlock Chizuru Kagura and Leopold Goenitz as playable Characters.
This works only with the Neo Geo CD-Version of the game! However if you want to play as them in the arcade simply enter this dipswitch code. 1-3 on the how to play screen then both bosses will appear. Then turn off the dipswitch.
The King of Fighters '97
Winning Pose
By holding or or after winning a match, you can select a winning pose for your fighter.
Play as Kyo '94
To play as a KoF '94 style Kyo Kusanagi, put the curser on Kyo Kusanagi at the character selection screen, hold and press or .
Play as Orochi Iori
To play as Orochi Iori, put the curser on Iori Yagami at the character selection screen, hold and press
+.
Play as Orochi Leona
To play as Orochi Leona, put the curser on Leona Heidern at the character selection screen, hold and press
+.
Play as Orochi Team
First, you must either input the code for Orochi Iori or for Orochi Leona.
Then, hold and press
+.
The King of Fighters '98
Fight Shingo Yabuki
In order to fight against Shingo, you have to meet one of the following conditions:
- If you have earned 100.000 points prior to the fourth match, you will fight against Shingo in your fourth match.
- If you have earned 100.000 points prior to the fifth match and if you've gotten a perfect victory in one of the previous rounds, you will fight against Shingo in your fifth match.
- If you get a straight win in your fifth match (none of your team members died), you will fight against Shingo in your sixth match.
Winning Pose
By holding or or or after winning a match, you can select a winning pose for your fighter.
Alternate Survivor Mode (Home Version)
To activate a harder Survivor mode, highlight the normal Survivor mode and press
+.
This works only with the Home version of the game!
Play as Omega Rugal (Home Version)
Press and hold when selecting Rugal.
This works only with the Home version of the game!
Play as secret characters
Press and hold when selecting one of the following characters:
- Andy
- Billy
- Chris
- Joe
- Kyo
- Mai
- Robert
- Ryo
- Shermie
- Terry
- Yashiro
- Yuri