I decided to fiddle with Frank the Fruit Fly some more again. I added a couple of lines of code, and so far I can't make the game crash. So that's good. I tried and tried but I could not make it crash. So I added a new screen to it.
And I finally got it the way I want it and I can beat it and the game still won't crash. So I've decided to keep working on the game until it crashes on me. Right now, Frank is in the chimney. In the next screen, he will come out of the chimney.