| Prime Ministers of the UK | 0 | - | 4.96 | 436,053 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,763 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,221 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,075 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,643 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,394 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,668,173 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,175 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,604 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,510 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,608 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,695 |
| National Founders | 0 | - | 4.40 | 83,706 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,580 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,112 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,762 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,715 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,018 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,650 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,435 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,853 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,328 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,719 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,807 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,375 |
| 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 | 31,694 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,190 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,573 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,813 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,619 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,795 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,095 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,670 |
| Name the English Monarchs | 0 | - | 4.92 | 499,409 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,443 |
| Countries of the Popes | 0 | - | 4.79 | 127,485 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,567 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 117,842 |
| Political Movements by Country | 0 | - | 4.46 | 72,349 |
| Hindu Countries | 0 | - | 4.86 | 49,748 |
| Every African Country Shape | 0 | - | 4.90 | 86,459 |
| Biggest Trading Partners - South Africa | 0 | - | 4.74 | 40,167 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,131 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,924 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,406 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,686 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,602 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,257 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,573 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,318 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,304 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,357 |
| The Trojan War | 0 | - | 4.83 | 39,519 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,722 |
| Name that Greek Letter | 0 | - | 4.93 | 322,234 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,977 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,205 |
| Roman Emperors | 0 | - | 4.95 | 118,988 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,559 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,728 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,554 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,096 |
| Random African Flag to Country | 0 | - | 4.88 | 74,413 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,077 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,170 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,789 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,224 |
| Presidential Middle Names | 0 | - | 4.41 | 59,856 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,907 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,047 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,818 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,239 |
| The American Revolution | 0 | - | 4.52 | 54,122 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,739 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,796 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,980 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,708 |
| Ancient Greek Words | 0 | - | 4.93 | 110,983 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,873 |
| 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 | 53,592 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,774 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,222 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,854 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,802 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,124 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,369 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 72,876 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,447 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,188 |
| First Ladies of the United States | 0 | - | 4.28 | 85,336 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,145 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,577 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,927 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,053 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,597 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,866 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,240 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,043 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,720 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,189 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,243 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,820 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,148 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,689 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,096 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,050 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,950 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,446 |
| History of Italy | 0 | - | 4.55 | 31,874 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,001 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,673 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,537 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,060 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,671 |
| 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 | 31,112 |
| The Vietnam War | 0 | - | 4.43 | 35,365 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,976 |
| Communist Countries in History | 0 | - | 4.63 | 493,474 |
| History of India | 0 | - | 4.61 | 21,326 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,263 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,694 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,066 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,037 |
| History of South Africa | 0 | - | 4.60 | 17,629 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,525 |
| Australian Capitals | 0 | - | 4.92 | 62,636 |
| History of Mexico | 0 | - | 4.58 | 15,249 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,353 |
| 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 | 32,112 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,848 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,513 |
| U.S. President Scramble | 0 | - | 4.40 | 116,380 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,069 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,754 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,780 |
| Official European Union Languages | 0 | - | 4.97 | 237,420 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,180 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,085 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,559 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,711 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,391 |
| History of Austria | 0 | - | 4.70 | 17,784 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| History of France | 0 | - | 4.59 | 56,463 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,843 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,819 |
| Mythology A-Z | 0 | - | 4.31 | 37,074 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,573 |
| Byzantine History | 0 | - | 4.91 | 28,671 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,879 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,015 |
| Arthurian Legend | 0 | - | 4.33 | 25,066 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,248 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,012 |
| Geography of the British Empire | 0 | - | 4.48 | 39,552 |
| Medieval English History | 0 | - | 4.53 | 43,365 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,568 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,036 |
| Asia Map Quiz | 0 | - | 4.99 | 909,630 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,915 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,109 |
| History of Iran | 0 | - | 4.66 | 16,293 |
| The Iraq War | 0 | - | 4.47 | 15,582 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,060 |
| Chinese Inventions | 0 | - | 4.30 | 33,744 |
| History of China | 0 | - | 4.37 | 56,833 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,392 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,354 |
| Countries by Founding Story | 0 | - | 4.95 | 76,749 |
| Independence from Whom | 0 | - | 4.99 | 210,231 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,117 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,149 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,541 |
| Countries of Africa | 0 | - | 5.00 | 2,516,677 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,583 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,688 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,130 |
| African Capitals by Map | 0 | - | 4.99 | 132,608 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,027 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,805 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,559 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,730 |
| African East Coast | 0 | - | 4.96 | 95,378 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,536 |
