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Typically a graphical style where there are one two colors. (A bit can be either on or off, so two options) Commonly black and white, but can be any combination depending on the style the creator is trying to accomplish. 

Testing knowledge and memory through a series of questions or challenges. Quiz games often involve a variety of topics, from general trivia to specific themes. They may be competitive, with players vying for the highest score, or cooperative, with players working together to answer correctly. Some games might use the quiz format for educational purposes, helping players learn new information in a fun and engaging way.