* Play as 'Real' Kyo Kusanagi or Iori Yagami (you need to get 'K.I' on the logo screen to be able to use Kyo or Iori).
1) To get 'K', you must use a team of 4 random characters consisting at least of three of these characters : K, Maxima, Benimaru, Shingo, Whip, Kyo-1 or Kyo-2.
2) To get 'I', you must use a team of 4 random characters consisting at least of three of these characters : Leona, Athena, Bao, Xiangfei, Kasumi, Kim or Jhun.
3) Then you must defeat Kryzalid and a screen will show you how to do the code.
4) For 'Real' Kyo Kusanagi, highlight the roulette selection box. Then, hold Start and press Left, Right, Up, Left, Down, Right. Kyo's picture will replace the sun symbol to confirm correct code entry.
5) For Iori Yagami, highlight the roulette selection box. Then, hold Start and press Right, Left, Up, Right, Down, Left. Iori's picture will appear replace the cresent moon symbol to confirm correct code entry.

* Fight Kyo Kusanagi or Iori Yagami : To fight Kyo Kusanagi or Iori Yagami you must : Choose one of the 7 full teams to battle with the computer. After clearing the 5th stage take note of your Battle Ability. Defeat Kryzalid. After finishing the Boss Stage, if the Battle Ability after the 5th stage is between 200 and 280 points Iori will appear. Otherwise if the Battle Ability is above 280 points Kyo will appear.

* Display character order : hold Start when selecting your character's fighting order.

* Select victory pose : press a Punch or Kick button immediately after winning a match.

* (BUG) The Power of The 'Ko'ou Ken' : when using Takuma, activate the Counter Mode, then go to the opposite edge of the screen. Now, send a Weak (slow) Ko'ou Ken at the opponent and complete the movement for the special. The special will hit first and then the Ko'ou Ken hits the opponent in the middle of the attack. The opponent gets frozen even when it should be dizzy for the finish of the special.

* Finish the game using one of these combinations to see the special endings :
1) Kyo Kusanagi with anyone except Iori Yagami.
2) Iori Yagami with anyone except Kyo Kusanagi.

There is a different ending for some predefined Teams if Krizalid will be defeated while using a specific fighter :
1) Fatal Fury Team (Mai)
2) Psycho Soldiers Team (Kensou)

0.139u2 [?]
0.71u2 [?]
0.37b11 [?]
0.36b7 [?]

Neo-Geo (Artwork available)

WIP:
- 0.145u6: Changed description to 'The King of Fighters '99 - Millennium Battle (NGM-2510)' and clone '(set 2)' to '(NGH-2510)'.
- 0.139u2: Johnboy renamed (kof99) to (kof99h) and (kof99a) to (kof99).
- 0.138u4: Johnboy changed description of clone 'The King of Fighters '99 - Millennium Battle (not encrypted)' to 'The King of Fighters '99 - Millennium Battle (Korean release)'. Renamed (kof99n) to (kof99k).
- 0.125u5: Johnboy added comment to kof99n: Korean version?.
- 0.124u4: Aaron Giles fixed space_map_range error in kof99, kof99a and kof99e.
- 0.122: Johnboy added AES VERSION tag to The King of Fighters '99 and MVS VERSION tag to clone (set 2).
- 0.71u2: Added 'The King of Fighters '99 - Millennium Battle (set 1)'. Changed parent description to '(set 2)'. Removed clone '(alt)'. Razoola renamed (kof99) to (kof99a).
- 0.71: Added clone The King of Fighters '99 - Millennium Battle (alt).
- 2nd September 2002: ElSemi submitted a fix for the YM2610 Delta-T samples which fixes the sound in the KOF99 how to play screen and in the Shock Troopers intro.
- 0.59: Added clone The King of Fighters '99 - Millennium Battle (earlier).
- 0.58: Changed sound2 rom to sound1 ($c00000).
- 0.57: Added cpu1 rom ($c0000) and removed user2 rom.
- 0.56: Added clone 'The King of Fighters '99 - Millennium Battle (not encrypted)' and replaced version (prototype) with a new set. Added gfx1/2 and sound1/2 roms to parent set.
- 0.55: Added user2 rom kf99_p1d.rom (decrypted version until we work it out) and gfx1 rom kf99_s1d.rom (The encrypted doards do not have an s1 rom. This is taken from the CD version and modified).
- 12th September 2001: Nicola Salmoria partially decrypted the original program ROMs of King of Fighters '99.
- 5th September 2001: Razoola - Released XOR 55 for KOF99: The Millennium Battle donated by Gav.
- 0.37b13: Fixed sound1/2 rom loading.
- 0.37b12: Added clone The King of Fighters '99 - Millennium Battle (prototype). Changed parent description to 'The King of Fighters '99 - Millennium Battle'.
- 0.37b11: Added 'The King of Fighters '99 - Millennium Battle (prototype)' (SNK 1999).
- 0.36b7: Added The King of Fighters '99 (Testdriver).

Other Emulators:
* Calice
* FB Alpha
* Kawaks
* Nebula

Romset: 88448 kb / 16 files / 74.0 zip