Was ist was is a quiz game based on a popular German series of science books for kids. It works like many other quiz games, as you can keep a card if you can answer a question on it (there are different categories, such as animals, technology, history etc.). However, there is a special movement mechanism that determines how far you can move on the game board: There is a pawn on an outer section of the game board which you can move forward by one or two squares. The number printed on the square you reach is the number of squares you can move, so you need to keep an eye on your own movement and of the possibilities you open for the next player(s). You can also challenge an opponent if you reach the same square as he or she, and if you are successful, you can take a card from him or her.