I have been working on a project for some time. I was inspired by one of my friend's mainly parodious (that's a word now) "Orchestrated Chaos," which played with the ideas of a game called "Super Smash Bros.", (not sure how to write Italics in Yahoo Answers), which places characters from various Nintendo games together and has them duke it out. My idea was originally for fun and humor, but gradually became more ambitious.
Almost two years have passed since then, and in the past year, I've been working with it a lot more seriously. The idea began as putting different characters from different franchises together to see how they interact, with the idea that they were all from different universes and that the barrier between universes was collapsing (typical fan fiction.)
Now, the story is more of a tribute than actual fan fiction. All of the main characters are original, the main world they come from is original, and the worlds they go to are not so much the worlds presented by the original sources, but interpretations of those worlds.
I'll stop you there. I know I can't make money or profit from this. At least, not in its current incarnation.
The thing is that I've been working very hard, and have an overarching theme and plot that has nothing to do with the copyrighted franchises. However, I still intend to pay tribute to the franchises that inspired me to become a writer and to create, and especially the ones that I enjoyed as a youth (and still sometimes enjoy).
My question is this: In x amount of years (possibly 15), when I'm finished with this series, can I make a novel adaptation of it that I can publish, so long as I stick to the overarching plot and theme and avoid using copyrighted characters and trademarks?
I suppose I mostly hope with the project I'm working on now that a) I will be able to do something different with literature... really my main goal in life anyway, and b) that (maybe) it will gain me a following before I publish my first book, no matter how small (hopefully not small, since I am a good writer and am working very hard on this).

