In Once Upon a Time, the players are called to tell a story. Each is dealt a number of cards depending on players. Then, one person just starts telling the story. All the stories are fantasy themed. Evil step-mothers, brave travelers, far away kingdoms, beautiful princesses, and enchanted objects are likely to feature strongly in any of the tales. The cards and the game don't exist so much to determine a winner, as they do to assist in telling a good story.