So I put in a fireball in Quest for the Cranberry. It took tons of hours, but I finally did it. I don't know how I did it or what was wrong, but it kept doing strange things when it got to the fireball screen. Freezing was the most popular thing, followed by making the % sign weird colors for no apparent reason. I was going to make a dragon the source of the fireballs, but it looks like I can't do that. I'm going to start on level 3 instead. Like I said before, level 3 will be underwater, which means that the number displaying the passcode will have to be not blue. White perhaps?
With the problems I've been having with the fireball screen, I don't know if I'll be able to make the game I was imagining (a "Frank the Fruit Fly"-type game), but I'll try my best until I just have to give up altogether. Perhaps the dragon could be a sea monster. It will be green. It is kind of tough to do things when you only have 4 colors. And I want to have a green fish in there as well. So apparently there's a limit of 255 different sprites you can have. Unless I'm wrong. Because I passed 16 (there's 18 in there right now).