| Prime Ministers of the UK | 0 | - | 4.95 | 384,939 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,249 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 102,820 |
| Countries of the Popes | 0 | - | 4.82 | 112,159 |
| Top 10 Richest Countries in Asia | 0 | - | 4.87 | 82,608 |
| Paramount Leaders of China | 0 | - | 4.31 | 10,016 |
| Prime Ministers of Australia | 0 | - | 4.48 | 28,257 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,205,231 |
| Country by Photo of its Leader | 0 | - | 4.78 | 116,205 |
| The Dictator Files: Chairman Mao | 0 | - | 4.32 | 18,646 |
| Biggest Trading Partners - Turkey | 0 | - | 4.82 | 45,585 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,290 |
| Biggest Trading Partners - China | 0 | - | 4.96 | 70,667 |
| Countries with the Most Hindus | 0 | - | 4.91 | 114,224 |
| Soviet Leaders 1917–1991 | 0 | - | 4.42 | 87,915 |
| National Founders | 0 | - | 4.39 | 80,007 |
| Hindu Countries | 0 | - | 4.72 | 33,430 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 397,008 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 49,290 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 355,484 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 113,459 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 99,048 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,373 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 169,101 |
| Play-Doh Presidents | 0 | - | 5.00 | 75,791 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 135,131 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 63,964 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 50,505 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 59,728 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 47,168 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 24,193 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,895 |
| Political Movements by Country | 0 | - | 4.46 | 68,886 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 101,559 |
| English Monarchs Quiz | 0 | - | 4.91 | 451,520 |
| Name the Popes Quiz | 0 | - | 4.46 | 123,297 |
| Every Asian Country Shape | 0 | - | 4.94 | 76,241 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 85,588 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,567 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 94,659 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,903 |
| Countries Bordering India | 0 | - | 4.98 | 156,615 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.58 | 52,086 |
| Countries Closest to India | 0 | - | 4.96 | 94,984 |
| African Countries with the Most Christians | 0 | - | 4.92 | 68,088 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 68,531 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 110,713 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 76,380 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,400 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,958 |
| Deadliest U.S. Wars | 0 | - | 4.83 | 159,313 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,235 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 136,756 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 180,798 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 65,596 |
| Category Elimination - European Countries #1 | 0 | - | 4.88 | 77,610 |
| Countries Italy Declared War On | 0 | - | 4.76 | 40,267 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.81 | 10,163 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 61,388 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,342 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 78,825 |
| Biggest Cities in India | 0 | - | 4.71 | 62,954 |
| Biggest Trading Partners – Australia | 0 | - | 4.89 | 48,012 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.32 | 40,096 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 589,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 86,600 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 72,136 |
| Roman Emperors | 0 | - | 4.95 | 96,961 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,594 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,072 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 100,663 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 50,671 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,919 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.90 | 62,767 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 178,709 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.58 | 24,744 |
| Pope Facts | 0 | - | 4.41 | 28,190 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,839 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 72,560 |
| Countries Closest to Israel | 0 | - | 4.86 | 99,521 |
| Flags of Countries that Border China | 0 | - | 4.93 | 82,394 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 48,839 |
| Biggest Trading Partners - South Africa | 0 | - | 4.82 | 37,923 |
| Biggest Trading Partners - Colombia | 0 | - | 4.89 | 35,972 |
| U.S. Bill of Rights | 0 | - | 4.53 | 31,158 |
| American Political Words | 0 | - | 4.41 | 22,400 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.33 | 10,415 |
| U.S. Vice Presidents | 0 | - | 4.41 | 121,064 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 97,879 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 82,585 |
| U.S. Presidential Trivia #2 | 0 | - | 4.52 | 40,257 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 80,658 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,691 |
| The American Revolution | 0 | - | 4.51 | 51,918 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 489,270 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 149,214 |
| The Reign of Napoleon | 0 | - | 4.53 | 36,318 |
| Biggest Trading Partners - Germany | 0 | - | 4.98 | 63,383 |
| Olympian Gods Quiz | 0 | - | 4.96 | 459,791 |
| Name that Greek Letter | 0 | - | 4.94 | 297,596 |
| Ancient Greek Words | 0 | - | 4.90 | 98,639 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 21,075 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 402,667 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 257,531 |
| Random Asian Countries on a Map | 0 | - | 4.96 | 153,219 |
| The Vietnam War | 0 | - | 4.41 | 33,057 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 247,327 |
| US Presidents - 1 Minute Sprint | 0 | - | 4.41 | 281,434 |
| Name a Valid U.S. President #2 | 0 | - | 4.52 | 61,916 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,686 |
| Europe Map Quiz | 0 | - | 5.00 | 4,331,324 |
| European Secessionist Movements on a Map | 0 | - | 4.51 | 31,714 |
| Save Europeans by Guessing Countries | 0 | - | 4.87 | 171,410 |
| Countries of Europe After World War II | 0 | - | 4.98 | 172,413 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 140,931 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,707 |
| Communist Countries in History | 0 | - | 4.65 | 459,018 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 67,151 |
| Byzantine History | 0 | - | 4.87 | 26,423 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 73,079 |
| History of The Netherlands | 0 | - | 4.43 | 15,881 |
| The Vikings! | 0 | - | 4.45 | 27,235 |
| The Portuguese Empire | 0 | - | 4.54 | 11,380 |
| Arthurian Legend | 0 | - | 4.35 | 24,336 |
| Wives of King Henry VIII | 0 | - | 4.55 | 51,092 |
| Countries the UK Declared War On | 0 | - | 4.58 | 113,302 |
| Geography of the British Empire | 0 | - | 4.51 | 37,296 |
| Medieval English History | 0 | - | 4.52 | 41,109 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.56 | 13,855 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,352,349 |
| Asia Map Quiz | 0 | - | 4.99 | 795,217 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 63,720 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.66 | 59,838 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 108,819 |
| History of Iran Quiz | 0 | - | 4.63 | 15,205 |
| The Iraq War | 0 | - | 4.45 | 14,462 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 15,819 |
| Vietnam War Countries | 0 | - | 4.81 | 86,861 |
| Chinese Inventions | 0 | - | 4.26 | 32,680 |
| History of China | 0 | - | 4.38 | 50,967 |
| History of India | 0 | - | 4.52 | 19,422 |
| Countries that Visit India the Most | 0 | - | 4.55 | 40,262 |
| Africa Map Quiz | 0 | - | 5.00 | 1,953,457 |
| African Countries with the Most Muslims | 0 | - | 4.76 | 81,556 |
| History of South Africa | 0 | - | 4.59 | 16,655 |
| Oceania Map Quiz | 0 | - | 4.98 | 573,372 |
| Australian Capitals | 0 | - | 4.92 | 61,031 |
| History of Mexico | 0 | - | 4.55 | 14,010 |
| United States Map Quiz | 0 | - | 4.98 | 3,923,231 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.11 | 25,160 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.08 | 14,812 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.17 | 10,153 |
| Governors Who Ran For President | 0 | - | 4.47 | 18,959 |
| U.S. Presidents by Event | 0 | - | 4.58 | 29,306 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 25,994 |
| First Ladies of the United States | 0 | - | 4.27 | 80,368 |
| Presidential Middle Names | 0 | - | 4.37 | 56,377 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.41 | 22,610 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 24,933 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 65,627 |
| U.S. Presidents Who Died in Office | 0 | - | 4.75 | 31,400 |
| Random U.S. Vice President to President | 0 | - | 4.55 | 27,986 |
| U.S. President Scramble | 0 | - | 4.37 | 91,815 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.63 | 14,058 |
| Add a Letter - Make a U.S. President | 0 | - | 4.66 | 22,139 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.47 | 21,042 |
| People in Pictures with Barack Obama | 0 | - | 4.11 | 45,287 |
| Count to 10 in Europe: Pro | 0 | - | 4.81 | 61,535 |
| Official European Union Languages | 0 | - | 4.98 | 202,831 |
| European Countries in their Native Language | 0 | - | 4.99 | 145,468 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 390,236 |
| Least Forested Countries in Asia | 0 | - | 4.79 | 60,962 |
| History of Russia Quiz | 0 | - | 4.48 | 30,031 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 88,034 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 75,003 |
| History of Austria | 0 | - | 4.69 | 16,504 |
| Geography of the French Empire | 0 | - | 4.49 | 25,543 |
| The French Revolution | 0 | - | 4.45 | 22,079 |
| History of France Quiz | 0 | - | 4.55 | 39,913 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 22,443 |
| Ancient Greek Trivia | 0 | - | 4.55 | 63,695 |
| Mythology A-Z | 0 | - | 4.29 | 34,259 |
| Figures from Greek Mythology | 0 | - | 4.92 | 170,379 |
| History of Ireland Quiz | 0 | - | 4.44 | 19,088 |
| History of Italy | 0 | - | 4.49 | 29,953 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,991 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,286 |
| Countries by Founding Story | 0 | - | 4.93 | 55,534 |
| Independence from Whom | 0 | - | 4.99 | 187,883 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,806 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,592 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 21,084 |
| Roman Names for Places | 0 | - | 4.66 | 41,982 |
| History of Spain Quiz | 0 | - | 4.33 | 19,680 |
| Geography of the Spanish Empire | 0 | - | 4.48 | 35,381 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 38,109 |
| Counties of England | 0 | - | 4.97 | 699,085 |
| Members of the British Royal Family | 0 | - | 4.11 | 109,645 |
| Middle Earth Geography | 0 | - | 4.56 | 37,462 |
| Lord of the Rings Trivia | 0 | - | 4.52 | 75,814 |
