My favorite fact about HyperCard was that the game Myst was built using HyperCard: Source: https://en.wikipedia.org/wiki/Myst#:~:text=The%20game%20was%...
Also sources: the Myst making-of video included on the Myst CD-ROM, and the Cyan team members who made it!
Thanks for the reminder!
Feel like I saw this many years ago but totally worth a re-watch.