I made some text adventures in elementary school on the school's Apple II machines in the early 80's after playing Scott Adams' games (as a side note, it was amazing to be able to tell him directly many years later how much he influenced my learning to program). Anyway, a few years after I graduated from the school, I went back to visit, and some kids figured out it was me who's adventures they'd been playing and asked how to get past the one point in one that they couldn't figure out. I had to tell them, much to their disappointment, that I hadn't actually finished that game.