| Prime Ministers of the UK | 0 | - | 4.96 | 436,325 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,769 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,246 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,119 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,705 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,466 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,671,374 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,564 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,643 |
| National Founders | 0 | - | 4.40 | 83,719 |
| Biggest Trading Partners - South Africa | 0 | - | 4.73 | 40,179 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,796 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,022 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,246 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,721 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,807 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,611 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,600 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,748 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,575 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,901 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,447 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,790 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,899 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,431 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,317 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,703 |
| Political Movements by Country | 0 | - | 4.46 | 72,368 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,252 |
| Every African Country Shape | 0 | - | 4.90 | 86,527 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,361 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 63,853 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,829 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,958 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,653 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,695 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,675 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,277 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,689 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,962 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,368 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,406 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,120 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,786 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,757 |
| Name the English Monarchs | 0 | - | 4.92 | 499,767 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,510 |
| Countries of the Popes | 0 | - | 4.79 | 127,546 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,632 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 118,806 |
| Hindu Countries | 0 | - | 4.86 | 49,792 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,184 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,415 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,378 |
| The Trojan War | 0 | - | 4.83 | 39,542 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,196 |
| Name that Greek Letter | 0 | - | 4.93 | 322,397 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,079 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,245 |
| Roman Emperors | 0 | - | 4.95 | 119,087 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,216 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,589 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,128 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,160 |
| Random African Flag to Country | 0 | - | 4.88 | 74,468 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,094 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,218 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,867 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,289 |
| Presidential Middle Names | 0 | - | 4.41 | 59,894 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,945 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,148 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,841 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,260 |
| The American Revolution | 0 | - | 4.52 | 54,134 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,472 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,858 |
| History of Russia Quiz | 0 | - | 4.49 | 31,833 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,809 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,044 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,032 |
| Ancient Greek Words | 0 | - | 4.93 | 111,040 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,966 |
| History of Italy | 0 | - | 4.55 | 31,888 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,369 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,549 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,075 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,903 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,616 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,695 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,832 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,283 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,625 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,345 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,727 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,742 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,866 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,825 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,264 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,538 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 72,960 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,069 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,639 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,389 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,151 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,464 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,830 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,798 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,581 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,814 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,165 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,055 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,912 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,446 |
| Pope Facts | 0 | - | 4.39 | 31,124 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,055 |
| The Vietnam War | 0 | - | 4.43 | 35,381 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,013 |
| Communist Countries in History | 0 | - | 4.63 | 493,683 |
| History of India | 0 | - | 4.61 | 21,332 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,285 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,756 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,097 |
| History of South Africa | 0 | - | 4.60 | 17,632 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,026 |
| Australian Capitals | 0 | - | 4.92 | 62,646 |
| History of Mexico | 0 | - | 4.58 | 15,254 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,379 |
| American Political Words | 0 | - | 4.39 | 23,374 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,109 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,486 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,829 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,563 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,192 |
| First Ladies of the United States | 0 | - | 4.28 | 85,353 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,858 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,153 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,637 |
| U.S. President Scramble | 0 | - | 4.40 | 116,428 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,071 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,876 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,075 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,766 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,726 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,817 |
| Official European Union Languages | 0 | - | 4.97 | 237,551 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,250 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,331 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,752 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,433 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| Geography of the French Empire | 0 | - | 4.45 | 26,986 |
| The French Revolution | 0 | - | 4.46 | 23,852 |
| History of France | 0 | - | 4.59 | 56,534 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,074 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,858 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,827 |
| Mythology A-Z | 0 | - | 4.31 | 37,089 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,712 |
| Byzantine History | 0 | - | 4.91 | 28,686 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,966 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| The Vikings! | 0 | - | 4.46 | 28,280 |
| The Portuguese Empire | 0 | - | 4.58 | 12,025 |
| Arthurian Legend | 0 | - | 4.33 | 25,072 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,061 |
| Geography of the British Empire | 0 | - | 4.48 | 39,567 |
| Medieval English History | 0 | - | 4.53 | 43,382 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,576 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,577 |
| Asia Map Quiz | 0 | - | 4.99 | 910,283 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,170 |
| History of Iran | 0 | - | 4.66 | 16,299 |
| The Iraq War | 0 | - | 4.47 | 15,587 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,068 |
| Chinese Inventions | 0 | - | 4.30 | 33,749 |
| History of China | 0 | - | 4.37 | 56,885 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,485 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,390 |
| Countries by Founding Story | 0 | - | 4.95 | 76,818 |
| Independence from Whom | 0 | - | 4.99 | 210,420 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,231 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,182 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,085 |
| Countries of Africa | 0 | - | 5.00 | 2,518,780 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,605 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,252 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,194 |
| African Capitals by Map | 0 | - | 4.99 | 132,749 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,122 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,841 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,621 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,784 |
| African East Coast | 0 | - | 4.96 | 95,445 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,655 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,303 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,110 |
| African Island Countries | 0 | - | 4.96 | 101,100 |
