The King of Fighters 2003 was first revealed at the
Tokyo Game Show in 2003. It was originally planned to be developed on the
Atomiswave hardware before moving to the
Neo Geo MVS. According to Akito Kadowaki, section manager of RC Business Promotion at
SNK Playmore, the new multi-shift system was created to replace the "Striker" assist system from the "NESTS Chronicles". In previous entries, the characters' battle order could affect the final outcome. The player must decide when to bring out the leader of their team. In previous games, all the characters performed similarly; in
2003, only one leader is able to perform a powerful technique. The player must choose whether to use the leader's move at the beginning of the fight or as an advantage later in the fight.
The King of Fighters 2003 was artist
Falcoon's debut in the main
King of Fighters series, though he had experience with spin-offs and the crossover
SNK vs. Capcom: SVC Chaos. He also worked on the
enemy AI for the franchise. Falcoon aimed for a balanced roster of both men and women for fans to enjoy. Ash Crimson was designed as an "attractive evil character", in contrast to previous
King of Fighters heroes. Due to Ash's appearance in
The King of Fighters 2003, the staff joked that teammate Shen Woo seemed more like the series' main character than Ash did. Writer
Akihiko Ureshino stated that Ash has the weakest relationships among protagonists but that it would develop in later games, and Nona, the artist in charge of the new protagonist, said he liked Ash and looked forward to his development. The development team encountered no major problems with the two boss characters, Adelheid and Mukai, during their design processes. Adelheid was added in an attempt to appeal to a wider audience and to add additional depth to the narrative of the series. During the Adelheid stage of the game, Chopin's
Revolutionary Etude plays. The system limitations of the Neo Geo hardware meant that the inclusion of the song required the removal of dialogue from other characters. The developers joked that "we believe it was worth it, but we may have dissed the supervising designers of other characters in the process." While the mid-boss Kusanagi was first introduced in
The King of Fighters 2002 without a plot focused around him,
The King of Fighters 2003 introduced his clone that was created by Chizuru Kagura. The developers also intended to include his original school uniform, which was highly popular with Kyo's fans.
The King of Fighters 2003 also features
Fatal Fury guest Terry Bogard with his redesign from
Garou: Mark of the Wolves (1999), including new moves introduced in that title. Another
Garou character, Tizoc, was chosen for inclusion in
2003 over
Fatal Fury grappler Raiden; while several designers also considered the idea of including the sub-boss Grant, the idea was later scrapped. Gato was also added from
Fatal Fury to appeal to Chinese players. Among original characters, Choi Bounge's absence saw the need for a replacement for Athena Asamiya's team. Malin, who had little marketing when promoting the game, was created for the role.
Release and related media The arcade game was originally released on December 12, 2003, with ports for the Neo Geo,
PlayStation 2, and
Xbox releasing on March 18, 2004, October 28, 2004, and August 25, 2005, respectively. In North America, the game was released alongside
The King of Fighters 2002 for the PlayStation 2 and Xbox on September 8, 2006. The game was released for
Nintendo Switch on February 21, 2019 and for the PlayStation 4 on December 8, 2020. The game was released for
Windows through Amazon Games, and in 2024, it launched on
GOG.com. The series inspired a
manhua of the same name. In China, the series was divided into two halves:
The King of Fighters 2003 composed five issues, and
The King of Fighters 03: Xenon Zero (拳皇 XENON ZERO) composed eight issues. The two series were combined for the North American release under the name of
The King of Fighters 2003. In July 2004,
ComicsOne licensed the series, with the first volume releasing alongside a new video game and continued publication after the transition to
DrMaster. ==Reception and legacy==