Oh yeah. Not to forget Zork II’s casting Frotz on an unsuspecting player.
Namekusejin - I get how that would be horribly frustrating, and I got into the habit of checking the walkthrough AFTER finishing a sequence to see if I’d missed anything (then I got into the bad habit of checking the walkthrough to actually get puzzle solutions… it’s a snowball. The endgame was finished thoroughly without any input from my tired brain).
I actually didn’t have any problem with finding that item in any playthrough. I know that piano stools open. But even if I didn’t, the description specifically says the seat is hinged
EDIT - Here follows some general comments I had to say about the game. Though I didn’t spoil any puzzles, it was only too late that I realised I was spoiling the fun of getting to some sections for the first time. Spolierising now.
[spoiler]I really, really, really wanted to solve the Enigma machine on my own. And I almost did it, but I failed to grasp an important part of it: steckering. I’d also failed to grasp the mechanics under which [steckering + trial and error + what I already KNEW to be true] would give me the answer. So close and nowhere near close enough, that hurt.
But by then, the puzzles had begun to weigh on me. I solved what I believe is a substantial amount of the game on my own, through persistence (= stubborness) and experimentation (= fiddling about until I had a lightbulb moment or a lucky combination) and some logic/planning ahead…
…but eventually it got too overwhelming. Really, my brain got tired. I think I gave up on the Pankhurst scenario - oh, the things I tried, and they all seemed to make sense. And the actual solution was so… so… bah, I don’t remember any more. But I think that’s when I truly threw in the towel for the first time.
And then I gave up entirely on the plane, from that point on it was hints in hand all the way.
On the whole though, it was a brilliant, brilliant ride. And whenever I hear of the Wright brothers in the real world I always, always remember that pair in Jigsaw. I especially remember the mandoline [/spoiler]