Cyan’s earlier effort, The Manhole, was also a good time, if more of an exploration than a game. Also shows its origins more clearly, as it requires HyperCard to play.
HyperCard! Here’s the box for version 2.2, which included the ability to build stand-alone apps as well as more scripting and multimedia options. Also my stack of HyperCard manuals and books, including the definitive Handbook from Danny Goodman.