– African Flags Challenge: Approximately 54 countries in Africa. (Click here to see all the African flags)

– Asian Flags Challenge: Approximately 49 countries in Asia. (Click here to see all the Asian flags)

– European Flags Challenge: Approximately 50 countries in Europe. (Click here to see all the Europen flags)

– North American Flags Challenge: Approximately 23 countries in North America. (Click here to see all the North American flags)

– South American Flags Challenge: Approximately 12 countries in South America. (Click here to see all the South American flags)

– Oceanian Flags Challenge: Approximately 14 countries in Oceania. (Click here to see all the Oceanian flags)

– Antarctic and Islands Flags Challenge: No permanent countries, but several territories and islands. (Click here to see all the Antarctic and island flags)