The Internet Archive lets you run HyperCard stacks by emulating the entire Macintosh system, but you can also use the HyperCard Simulator: https://hcsimulator.

The Internet Archive lets you run HyperCard stacks by emulating the entire Macintosh system, but you can also use the HyperCard Simulator: https://hcsimulator.com/ https://hcsimulator.com/ You can click on a menu at the top right to bring up a list of stacks. It simulates HyperCard directly rather than simulating an entire Macintosh, so it’s a lot faster and more convenient to work with. Not all stacks are compatible, but there’s a wide selection.