* HeAlsoDid: Fumito Ueda, director of ''VideoGame/{{ICO}}'', ''VideoGame/ShadowOfTheColossus'' and ''VideoGame/TheLastGuardian'' was an animator at WARP who worked on the director's cut of D, as well as Enemy Zero.
* ScrewedByTheNetwork: When D was ported to the Platform/PlayStation, Sony only manufactured 28,000 units, which didn't mesh well with the 100,000 preorders received. Due to this, ''VideoGame/EnemyZero'' became a Platform/SegaSaturn exclusive (although ''Enemy Zero'' later ported to PC like many, but not all, flagship Sega Saturn games released outside Japan).