What movie ends with a twist, where we learn that all of life is just an alien child's toy?

I don't remember anything else about the movie. Sorry. The alien child is playing on some stairs I think, at the banks of a river. A parent calls the child inside, and the child leaves behind a "toy" which we discover is our earth.



The point of the movie was that life on earth is a game (like Sim?) for an alien child. What movie was this?What movie ends with a twist, where we learn that all of life is just an alien child's toy?I could be wrong, but I remember seeing this on an episode of Alfred Hitchcock. Not sure of the name of the episode though.What movie ends with a twist, where we learn that all of life is just an alien child's toy?Men In Black?