I always felt like Hypercard was one small step from owning the www & modern browsing experience. It was earth shattering in its time for the ability to rapidly build multimedia experiences & applications...
Other Brøderbund games were HyperCard stacks too. I had Cosmic Osmo, and I remember playing The Manhole at a friends. These inspired me to make a Jurassic Park game using HyperCard. Sadly I didn’t get far.