Suddenly, upon reading the DM Guide Preface, an idea for a game struck me.
Now, myself being a very 'meta' guy, I am always pointing out when things are meta (i.e. heroes who are making a comic within a comic, a movie about directors filming a movie, etc.).
"So you want to play god. It happens to a certain fraction of us--the desire to create a world. It could be a fantastical place, a land of adventure and mystery, or it could be a secluded island, a secret hideout, or an outpost on Mars--who knows.
To conjure such an illusionary realm, one must know the right incantations, powerful spells of arcane origin that weave the thread of reality into a tapestry of your own design." -- Dan of Dantom
After reading this, I realized that there could quite easily be a game about making a BYOND game. (With a creative spin to it, of course.)
Let's take Dan's words there quite literally.
There could be some interesting elements to this, like using magic powers to create DM code.
Dark, forbidden powers could be the basis of 'evil' fan-games.
Artists could train their abilities to make art for programmers to use. They could sell their art or give it away free.
Created art and code could be stolen and sold on the black market, etc. (Giving out your source would be a possibility, spawning copies of your world.)
Now, games would actually become worlds in the game.
If you use your magic to create a world, you could potentially see an actual area in the game inspired by what you wanted to be there.
Players would play your game, and you would see them interacting with stuff in your world, which you could then modify. (Players wouldn't be actual players, but NPC's with some sort of AI.)
You could control what is there, from 'pbags' to advanced plot.
(Okay, most of this is me ranting randomly.)