Oh my god I am the biggest idiot that has ever played this game. I finally realized that the stage editor DOES work, it just changes that third option in the main menu, which at first was the final battle area, but with no enemies! Now I understand what the stage editor does! It changes the condition of that room, by changing the background, what enemies appear and how many you beat until you win that room! Boy, am I a goof, dork, or idiot?