SNK Playmore promoted
Neowave since early 2004, promoting the arcade in during April in Japan with the promise of returning characters from
The King of Fighters 2002 but also new type of backgrounds. By the mid-2000s, SNK's in-house Neo-Geo hardware had become quite dated. After
The King of Fighters 2003, SNK Playmore looked for newer substitute platforms for future development. The Atomiswave, a cartridge-based multi-arcade system like the Neo-Geo and based on Sega's Dreamcast hardware, with which SNK was already familiar, was an obvious candidate. Rather than commit a new major game blindly, SNK instead chose to "test the waters" with a remix of
The King of Fighters 2002, tweaking the game's systems; reskinning the game with high-resolution backgrounds, character art, and interface elements to take advantage of the more advanced hardware; and removing characters originating with the Eolith-developed
KOF2001 and
KOF2002, replacing them with other SNK-originated characters. The game was also made on the
PlayStation 2 and
Xbox. The PlayStation 2 and Xbox versions of the games graphics consist of polygonal 3D backgrounds overlaid with 2D character sprites (similar to the 3D stages featured in the console versions of previous games in the series such as the Dreamcast versions of ''KOF '98
and KOF '99''), whereas the Arcade version has 2D backgrounds. The PS2 version was released only in Japan and the
PAL region, the Xbox version was released both in Japan and North America; additionally, the Xbox version was the last game released for the console in Japan. The North American version was released on April 18, 2006. In 2020, a
Dreamcast homebrew adaptation of the arcade version was also made possible due to the Dreamcast sharing almost identical hardware with its Atomiswave cousin. ==Reception==