A different version of the Raymond Queneau classic.
This one starts off with:
"Once upon a time, there were three wee pees dressed in green dozing cosily in their pod. They had chubby, moon-shaped faces and breathed through their funny little nozzles, snoring softly and euphoniously."
vs.
"Once upon a time there were three peas dressed in green who were fast asleep in their pod. Their round faced breathed through the holes in their nostrils, and one could hear their soft and harmonious snoring." from "Un conte à votre façon,"
Not really a 'game', but rather a (charming) web-interpretation of a technique called Oulipo, written by one of the founders of that technique.
It's CYOA-esque, but at each branch you're given some choices; to continue the story, change it, or end it.
It was interesting for the 5 or so minutes it takes to go through it, and I smiled as I did.
Leaving unrated since I enjoyed the experience, and learning about Oulipo, but I don't view it as a game to be rated.