So I decided to try to fix my Game Gear game. I found 2 instances where I put in the wrong variables. I added a few other things, and lo and behold, I think I finally got it actually working!

Now that I got it working, I think it's finished. There really isn't much more to do here. If I put in more enemies, the Game Gear will definitely show it isn't capable of having more than ten sprites in a row. Someone suggested I put in more enemies, but I think adding just one is enough. Next step: testing this on a real Game Gear.