Dead or Alive is a video game series produced by Tecmo Koei. The game's popularity is due to its cast of busty female characters and the animation of their breasts.
Its story and characters are the creation of Tomonobu Itagaki who developed the original game with Team Ninja.
The series is primarily composed of 3D fighting games with an innovative countering system, but the team developed some spin-off games: in Dead or Alive Xtreme Beach Volleyball and its sequels, DOA's women and their sex appeal play a more focal role than it does in the core Dead or Alive series.
