I wrote, and sold my first piece of software in HyperCard. It was a pretty lame Choose Your Own Adventure style game, where you clicked on buttons, having read

I wrote, and sold my first piece of software in HyperCard. It was a pretty lame Choose Your Own Adventure style game, where you clicked on buttons, having read the text. 7 year old me was pretty chuffed, to buy some baseball cards out of his hobby. I really, really miss that world.