A game called Dead or Alive: Code Chronos was in development for the Xbox 360. The game would have been a prequel to the series and would relay the story of Ayane and Kasumi before the first tournament. However, the progress of Code Chronos came to a halt due to Itagaki's dispute with Tecmo. In 2010, the project was then confirmed canceled by the current head of Team Ninja, Yosuke Hayashi.

A promotional image advertising Dead Or Alive 4 featured an ad for Code Chronos in the bottom-right corner.
Contributed by DrakeVagabond
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