I find the level of animation in the Jill games very striking, almost closer to the Prince of Persia end of the spectrum than comparable Apogee titles. Was this common for that era? I was really expecting you to mention it because it stuck out to me so much, but apparently not :)

I never understood two types of acid mechanic in Brix D: (Or Water vs. Quicksand as I always thought they were and called them, though the editor implies it's actually Water vs. Acid.) I mean, I understood it--like you said, they introduce them both early on and it's easy to learn from observation what each of them does. But I never understood why!

These are fantastic, thank you so much for all the research and effort you put into them :D