European Geography Tutor helps you learn the countries of Europe by name and location, with a study mode (“Explore”) and two types of quiz.
African Geography Tutor covers all the African countries.
USA Geography Tutor covers the 48 contiguous states of the United States (all but Alaska and Hawaii).
These are not programs for any kind of advanced learning – just help you learn where a country lies, very useful if you think that Serbia is a neighbor of Poland, and the like.
Note that Fyrom is incorrectly referred by the name of Macedonia. Note also that the authors consider Turkey a part of Europe!