Où et Quand? was a roleplaying article in the French gaming magazine Graal. It was written by Pierre Bruno, Olivier Frot and H D L, and served as an introduction to the campaign in the same issue of Graal.
The campaign took place in the world of Planet of Adventure by Jack Vance, and was intended to be played either with Star Wars: The Roleplaying Game or with Call of Cthulhu roleplaying game. The article gave background suggestions for a better integration in each universe.