Looks like I'll need to have Arno edit a few things.
[spoiler] Those are the types of things I miss when not thinking hard enough (or working quickly)
[/spoiler]
LogicDeluxe wrote:while the official BD4 comes with the Construction Kit.
I knew that this one was considered
a BDIV, but I had no clue that this 1-level, 3/4 length, non-self-contained game was the
official one...

@Arno: Please put a note at the top of the quiz to clarify that questions 11 and 13 refer to BDIV by DR Watson.
As for question 9, I altered the reasoning, included in the spoiler block below. Don't highlight it if you haven't played the quiz, yet!
[spoiler]The timing of the fireflies isn't affected. Although there's a difference in the timing of magic walls between NTSC in PAL, it's not as noticeable as the timing of C: the inbox (before Rockford appears). It is a little longer in PAL, than in NTSC. BDI (and II) were designed in NTSC, and due to this timing difference, one of the BDI intermissions is unsolvable in PAL. [/spoiler]
Thanks for bringing those to my attention, Logic!

Boulders are round.
Fireflies are square.
I need to find
a'way out of here.