| Prime Ministers of the UK | 0 | - | 4.96 | 436,016 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,758 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,211 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,068 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,637 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,380 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,667,789 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,172 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,604 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,501 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,605 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,694 |
| National Founders | 0 | - | 4.40 | 83,703 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,556 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,101 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,760 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,709 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,018 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,641 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,422 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,850 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,317 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,712 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,795 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,369 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,259 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,691 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,687 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,179 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,569 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,813 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,616 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,775 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,089 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,661 |
| Name the English Monarchs | 0 | - | 4.92 | 499,366 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,434 |
| Countries of the Popes | 0 | - | 4.79 | 127,481 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,556 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 117,668 |
| Political Movements by Country | 0 | - | 4.46 | 72,349 |
| Hindu Countries | 0 | - | 4.86 | 49,740 |
| Every African Country Shape | 0 | - | 4.90 | 86,452 |
| Biggest Trading Partners - South Africa | 0 | - | 4.80 | 40,167 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,126 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,923 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,404 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,686 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,595 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,255 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,557 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,309 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,293 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,357 |
| The Trojan War | 0 | - | 4.83 | 39,517 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,671 |
| Name that Greek Letter | 0 | - | 4.94 | 322,222 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,968 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,195 |
| Roman Emperors | 0 | - | 4.95 | 118,979 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,551 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,276 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,721 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,547 |
| Africa Flags Map Quiz | 0 | - | 4.94 | 36,096 |
| Random African Flag to Country | 0 | - | 4.88 | 74,406 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,074 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,440 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,163 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,777 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,220 |
| Presidential Middle Names | 0 | - | 4.41 | 59,853 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,903 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,030 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,815 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,236 |
| The American Revolution | 0 | - | 4.52 | 54,121 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,734 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,793 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,977 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,681 |
| Ancient Greek Words | 0 | - | 4.93 | 110,979 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,865 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,352 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,863 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,589 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,766 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,213 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,853 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,796 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,117 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,344 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 72,862 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,187 |
| First Ladies of the United States | 0 | - | 4.28 | 85,329 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,145 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,576 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,924 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,053 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,591 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,865 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,214 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,023 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,720 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,959 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,231 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,818 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,111 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,680 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,092 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,049 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,938 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,445 |
| History of Italy | 0 | - | 4.55 | 31,873 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,001 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,644 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,535 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,056 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,668 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,437 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,613 |
| Pope Facts | 0 | - | 4.39 | 31,109 |
| The Vietnam War | 0 | - | 4.43 | 35,362 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,970 |
| Communist Countries in History | 0 | - | 4.63 | 493,457 |
| History of India | 0 | - | 4.61 | 21,325 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,260 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,556 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,042 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,029 |
| History of South Africa | 0 | - | 4.60 | 17,629 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,457 |
| Australian Capitals | 0 | - | 4.92 | 62,635 |
| History of Mexico | 0 | - | 4.58 | 15,249 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,257 |
| American Political Words | 0 | - | 4.39 | 23,369 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,098 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,478 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,826 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,388 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,110 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,847 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,513 |
| U.S. President Scramble | 0 | - | 4.40 | 116,378 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,068 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,752 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,776 |
| Official European Union Languages | 0 | - | 4.97 | 237,407 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,174 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,067 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,541 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,708 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,388 |
| History of Austria | 0 | - | 4.70 | 17,783 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| History of France | 0 | - | 4.59 | 56,457 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,841 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,818 |
| Mythology A-Z | 0 | - | 4.31 | 37,071 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,557 |
| Byzantine History | 0 | - | 4.91 | 28,671 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,861 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,013 |
| Arthurian Legend | 0 | - | 4.33 | 25,065 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,246 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,008 |
| Geography of the British Empire | 0 | - | 4.48 | 39,552 |
| Medieval English History | 0 | - | 4.53 | 43,364 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,568 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,985 |
| Asia Map Quiz | 0 | - | 4.99 | 909,524 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,904 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,101 |
| History of Iran | 0 | - | 4.65 | 16,293 |
| The Iraq War | 0 | - | 4.47 | 15,581 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,060 |
| Chinese Inventions | 0 | - | 4.30 | 33,743 |
| History of China | 0 | - | 4.37 | 56,826 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,380 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,351 |
| Countries by Founding Story | 0 | - | 4.95 | 76,744 |
| Independence from Whom | 0 | - | 4.99 | 210,208 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,102 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,142 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,498 |
| Countries of Africa | 0 | - | 5.00 | 2,516,475 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,580 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,644 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,115 |
| African Capitals by Map | 0 | - | 4.99 | 132,604 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,015 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,796 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,549 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,724 |
| African East Coast | 0 | - | 4.96 | 95,374 |
