Because the storyline and graphic FMVs were more horrifying than any video game that had yet been released, head developer Kenji Eno resorted to a trick in order to get D published.

The game was originally developed with no storyline, and Eno kept the story sequences a secret even from the other members of WARP. When the game was finished, he submitted a 'clean' version (i.e. without the violent and disturbing story content of the complete version) for approval.

He deliberately submitted the master disc late, knowing that part of the penalty was that he would have to deliver it by hand to the manufacturers in the USA. While on the plane, he switched the phony 'clean' discs with the finalized discs, thus completely bypassing all censorship.
Contributed by IkiFoo