Out of the entire thread, this is the only advice worth listening to.
and that my friends is how super mario was created
the plot has sadly not evolved much over 10+ years...
But with few exceptions, the games are still fun, which is exactly my point.
Almost everyone in this thread suggested making the story first. This is a waste of time, if your game is not fun, it doesn't matter how good a story it will have. Also, the truth is the vast majority of people here are not writers, and do not have the capability to write a good story, let alone one good enough to carry an RPG. So, you spend months to write a good story (you can't write one in 2 hours, sorry), and chances are it will still turn out to be some cliched garbage, then you slap it into RPG maker and call it a day. If that your shining beacon of game design, you are severly mistaken.
It is much easier to forgive a bad story if the game has great gameplay to back it up, than excuse bad gameplay with a good story. If the game isn't fun, I don't care if you wrote the next great classic, I'm not going to sit through it. I'll excuse a bullshit story if I enjoy playing the game. That is, after all, what I bought, a game. If I wanted to read a good story, I would buy a book.
Think back to a lot of the "classic" games, they did not have good stories, but they sure as hell had great gameplay.