I was reading about a surreal RPG that looks like an escape from a dream.
And that spurred what might be the best idea I've ever had, b/c it's totally implementable and workable, I think.
So, this requires a partially recipe-esque explanation.
An RPG with:
* day/night cycle
* dream sequences
* day/night affects more than just aesthetic
that's all been done, I know. Just put those things there, and then...