Okay, so I've had an idea! At some point soon I'm going to spin a bit of a yarn, in text, about a world in some sort of strife. Then I will pitch two choices, of which one can be chose and that will influence that worlds future to some degree/will influence the yarn.
Instead of going full blown crpg, I've written a small platformer game (mostly modded up the game maker example). At the end of the level is a star that gives a code. The first person who gives the code, gets to make the choice!
Because instead of shooting for fiscal return straight off the bat, with all the workload for a mere chance of return that entails, what I'm going for is simply someone giving the effort of completing the simple platformer. That's the 'fee', so to speak. Or perhaps it's like bartering - I dunno. But it's not working for absolutely free, there is a return involved - and that encourages development that moves toward getting more complex gameplay than a simple platformer.
In latter ones I'll most likely have multiple codes, so as to give more than just the first person to the post the influence. But for now I'm keeping it simple until a return comes in.
Stay tuned for that yarn - I'm pretty sure I have one coming :)