The King of Fighters XI Action Replay Codes (PS2)

The King of Fighters XI (KOF XI) is the latest installment of The King of Fighters series. The numerical distinction for the series now is based primarily on SNK Playmore wanting to avoid being locked into a rigorous yearly schedule of releases. A North American version was released on the Playstation 2 on November 13, 2007, as stated on SNK Playmore USA official site. Mukai, a member of a mysterious group, stole the Orochi seal. Taking advantage of all the confusion caused by it, Ash stole the Yata Mirror from Chizuru.

In the advent of the new tournament, new faces are handed invitations, while old faces, such as Eiji Kisaragi, return to the ring. Among the new KOF participants are Oswald, Duck King (a South Town veteran fighter himself), Momoko, and Elisabeth. All these fighters will find themselves in a tournament full of mysteries and secrets started by motives that they'd ignored. Behind this healthy competitive tournament hides a hidden force called "People from the Past" that has a lot of mixed objectives. (Wikipedia)

Action Replay Codes

*Note: These codes won't work unless you use an Action Replay cartridge:

There are 22 codes for this game.

(M)
928N-YBDK-CNCGA
95K7-4DBM-DM229

Infinite Time
0GK2-XRKW-6RY15
9PU6-U4TC-VHRVT

Passive AI
UW76-CT2H-NWB0Q
PKQH-W3WF-Z0F37

Hyper Mode (L3 to Activate, R3 to stop)
BWFY-WMGT-JXR43
WZZK-8F9X-7EEPU
JCNJ-45M7-7V4N9
7F20-CKRD-R7TH6
9HPM-UW0N-1431T

Unlock Extra Characters
JDV5-2YYN-6Z66C
AM13-49E2-JRG3E

Unlock All Endings
TX20-8UF0-XT4QH
JW7P-U52G-UH7P4
8CYQ-J46W-FYBZT
GDFM-BB7N-45RNC
6AYJ-YZ7W-4QANP
1JHB-5QE5-9JD7K
70V1-R19W-3Q1P9
PHUT-TVWR-EDAPV
H8ZA-2139-P9M7Y
NA8J-0760-16MJC

Unlock All Character Gallery
6Y86-ZR4J-PJB7H
0XMZ-G47J-H66VA
DXB4-FECY-NCEAJ
REGQ-500H-JFBD6
PM7J-Y9WJ-H1T4C
Y082-6FJY-FEHJN
ZTRD-RP1J-T2BKT
QEYD-NN92-9243U
A8RU-GW15-WE6RG
KHWQ-HGH3-ETV2M

Player 1 Codes:
X0NF-ZK4P-F9AEH

Infinite Health Character 1
V0KJ-V9ZU-ZRM0J
HNKP-MPMJ-H3GP3

Infinite Health Character 2
3ZYZ-CMVE-59D6J
6J6C-R612-3FG7M

Infinite Health Character 3
VZPJ-KQC1-265H7
AH25-0D04-GVQFJ

Max Power Gauge
51Z1-F848-R6R9Y
U047-71WD-5TYJR

Max Skill Gauge
FCP0-3N2A-BTFFK
CMG5-QET9-VRT4E

Player 2 Codes:
EEN3-Q8EY-MZV2T

Quick Stun
R7UV-WJGY-8AC4F
7RKW-FBVC-9BJWC

1 Hit Kill Character 1
YGQ6-C08B-A08C0
GXVE-9EGP-FD98E

1 Hit Kill Character 2
83GM-6N4K-PWBFM
EZ38-PJ03-BAGT7

1 Hit Kill Character 3
ZAP1-FVKY-AG03T
W3J9-TQMA-P3HKM

Max Power Gauge
M4ZW-WY5P-8U545
3Z1A-EQ05-Q4M2B

No Power Gauge
AUZY-44YA-0Z83M
MDYT-JBJA-4UPHC

Max Skill Gauge
ZE2H-W9F5-BF3DY
KD8B-MD1V-6H786

No Skill Gauge
Q4GG-MHBA-ZWQX0
BWQY-9DTG-QE6HQ

(Thanks to Codejunkies)

Here's a video showing some of the characters' combos: