This game is called I wish. In this game you make a wish and the next person grants it, but they say something bad will happen concerning the wish, then they make a wish and so on. Here is an example:
Person 1: I wish I had a million dollars
Person 2: Granted, but its in monopoly money. I wish I had some pizza.
Pretty simple, and its always fun to see what people wish for and what would go wrong. I'll start. I wish I could get another cat.