Each episode features two teams, with each one boasting a family member from a younger generation and a family member from an older generation (often grandchildren and their grandparents). Though the competing teams do win money along the way for questions answered correctly, the winning team gets an additional prize, but they vary.
Kelly Ripa calls the Toddler's Choice round the "most exciting part of the game." The winning team is offered a choice of two prizes of different values. (We know that's not very specific.) The catch is that the youngest team member gets to choose the prize. Would a toddler choose an elephant-sized teddy bear or a trip to Bermuda? You know the answer to that one.