I cut my programming teeth on HyperCard long ago. I made WildCard over a period of about a month of free time. I'm not asking for any money; I just wanted to remember how much fun HyperCard was. The screens are bigger and better, but the stacks are still the same size!
The project shows off a number of wonderfully intuitive things about HyperCard, from the simple stack-of-cards architecture, to the readable english-ish script visibly defined in BNF.
Now featuring free accounts that let you share your stacks with the public...For example: https://hypervariety.com/WildCard/Staximus/
Have a good time and let me know if you used HyperCard!