We've started to let our five-year old daughter Cordelia play World of Warcraft. She runs her cow-person around the starting town, hits birds and pretends that everyone she sees is her friend. We don't have to pay attention to her. Win-win all around.
The other day, I asked her if she was winning. She said, "Daddy! This is not a winning game! You can't win!"
Then I asked her what you do in the game instead. After some thought, she said, "Nothing."
Sometimes children are wise beyond their years.