The King of Fighters '94[edit]
Blood Code (Home Version)[edit]
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[edit]
Blood Code (Home Version)[edit]
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[edit]
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[edit]
Boss Code (CD Version)[edit]
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[edit]
Winning Pose[edit]
By holding or or after winning a match, you can select a winning pose for your fighter.
Play as Kyo '94[edit]
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[edit]
To play as Orochi Iori, put the curser on Iori Yagami at the character selection screen, hold and press
+.
Play as Orochi Leona[edit]
To play as Orochi Leona, put the curser on Leona Heidern at the character selection screen, hold and press
+.
Play as Orochi Team[edit]
First, you must either input the code for Orochi Iori or for Orochi Leona.
Then, hold and press
+.
The King of Fighters '98[edit]
Fight Shingo Yabuki[edit]
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[edit]
By holding or or or after winning a match, you can select a winning pose for your fighter.
Alternate Survivor Mode (Home Version)[edit]
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)[edit]
Press and hold when selecting Rugal.
This works only with the Home version of the game!
Play as secret characters[edit]
Press and hold when selecting one of the following characters:
- Andy
- Billy
- Chris
- Joe
- Kyo
- Mai
- Robert
- Ryo
- Shermie
- Terry
- Yashiro
- Yuri