Level: Europe 1914

Level: Europe 1919

Level: G20 Member Countries

Level: The Six Cradles of Civilization

Level: The U.S.: 13 Colonies

Level: The U.S.: 15 Least Populated US States

Level: The U.S.: 15 Most Populated US States

Level: The U.S.: Acquisitions of Territory, 1783-1853

Level: The U.S.: Great Plains States

Level: The U.S.: States in the Midwest

Level: The U.S.: States in the Midwest and the West

Level: The U.S.: States in the Northeast

Level: The U.S.: States in the South

Level: The U.S.: States in the South and the Northeast

Level: The U.S.: States in the West

Level: The U.S.: States West of the Mississippi River

Level: » 30 Most Populous Countries

Level: ░ Europe: Flags (Easy Version) (with Kosovo)

Level: ░ The U.S.: The Founding Fathers

Level: ░ World: Very Similar Flags

Level: National Hockey League (NHL) Teams