Mystery P.I.: The Lottery Ticket is a hidden object game, created and published by SpinTop Games. The title is now published by PopCap Games. The object of the game is to find a lottery ticket belonging to the player character's grandmother. When it's found, the player character is rewarded with over 400 million dollars in prize money. Before that, the player must find various hidden objects and solve various clues which all relate to the lottery ticket.