Each pack of cards is based on a theme, such as cars, aircraft, books, boats, dinosaurs, or characters from a popular film or television series. Each card in the pack shows a list of numerical data about the item. For example, in a pack based on cars, each card shows a different model of car, and the stats and data may include its engine size, its weight, its length, and its top speed. If the theme is about a TV series or film, the cards include characters and the data varying from things like strength and bravery to fashion and looks, depending on the criteria.