First of all, this shouldn't be here.
Second, your question is Correct but if you use RPG maker wisely with scripts, its no less that game maker.
But gamemaker can do many things too, you just need practice.
So what you do is, you take two pieces of paper and write RPG on one and GM on one then fold them.
Then shuffle them
Choose one.
Observations - The chit you choose will be your option
Materials Required - Writing skills, paper, pen.
Precautions - Dude, the pen needs to have ink.