There's a big list on mobygames here: https://www.mobygames.com/group/9360/games-with-manual-looku...
For those wondering, yes it happened to me, it was absolutely infuriating like "man this fucking game is full of bugs", lol.
Oh dang, these are fun, I remember the classic Monkey Island "Dial-A-Pirate" wheel [3]
FYI you can use these without downloading the whole collection:
- Under Download Options, click "SHOW ALL" to see the list of files [1]
- Find the zip file for the game you want and click "View Contents" [2]
- Click the "HTM" file listed [3]
Kudos to the kind soul who took the extra effort to package them as single-file self-contained html docs!
1: https://archive.org/download/code-wheels
2: https://ia904503.us.archive.org/view_archive.php?archive=/22...
3: https://ia904503.us.archive.org/view_archive.php?archive=/22...
Totally, and exceptionally common. It was popular in the '80 and the early '90.
I don't remember the exact format but it turned out the riddle was instructing me to go to page X, line Y and character Z of the manual for the game!
I remember being so sad that I couldn't play anymore because I didn't have the manual but in retrospect I wonder if this was an anti-piracy strategy