| Prime Ministers of the UK | 0 | - | 4.96 | 436,271 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,768 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,242 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,107 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,695 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,450 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,670,440 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,556 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,640 |
| National Founders | 0 | - | 4.40 | 83,717 |
| Biggest Trading Partners - South Africa | 0 | - | 4.73 | 40,176 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,724 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,021 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,212 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,710 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,798 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,610 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,597 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,727 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,525 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,887 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,427 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,773 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,882 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,421 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,304 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,702 |
| Political Movements by Country | 0 | - | 4.46 | 72,363 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,235 |
| Every African Country Shape | 0 | - | 4.90 | 86,515 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,359 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 63,849 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,827 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,948 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,649 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,693 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,652 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,270 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,670 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,935 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,355 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,387 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,118 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,774 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,737 |
| Name the English Monarchs | 0 | - | 4.92 | 499,681 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,498 |
| Countries of the Popes | 0 | - | 4.79 | 127,541 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,615 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 118,649 |
| Hindu Countries | 0 | - | 4.86 | 49,786 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,171 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,413 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,378 |
| The Trojan War | 0 | - | 4.83 | 39,539 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,100 |
| Name that Greek Letter | 0 | - | 4.93 | 322,346 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,050 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,235 |
| Roman Emperors | 0 | - | 4.95 | 119,058 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,211 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,581 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,120 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,150 |
| Random African Flag to Country | 0 | - | 4.88 | 74,459 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,087 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,207 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,844 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,279 |
| Presidential Middle Names | 0 | - | 4.41 | 59,883 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,928 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,122 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,837 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,254 |
| The American Revolution | 0 | - | 4.52 | 54,128 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,411 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,848 |
| History of Russia Quiz | 0 | - | 4.49 | 31,832 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,807 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,027 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,954 |
| Ancient Greek Words | 0 | - | 4.93 | 111,029 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,951 |
| History of Italy | 0 | - | 4.55 | 31,881 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,367 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,547 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,070 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,895 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,609 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,693 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,818 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,272 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,622 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,334 |
| Countries Closest to Egypt | 0 | - | 4.83 | 100,715 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,737 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,862 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,821 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,233 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,495 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 72,944 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,042 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,624 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,353 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,128 |
| Europe Map Quiz | 0 | - | 5.00 | 4,742,869 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,826 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,723 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,560 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,798 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,149 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,022 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,855 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,443 |
| Pope Facts | 0 | - | 4.39 | 31,118 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,030 |
| The Vietnam War | 0 | - | 4.43 | 35,378 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,008 |
| Communist Countries in History | 0 | - | 4.63 | 493,643 |
| History of India | 0 | - | 4.61 | 21,332 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,279 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,514 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,083 |
| History of South Africa | 0 | - | 4.60 | 17,632 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,889 |
| Australian Capitals | 0 | - | 4.92 | 62,644 |
| History of Mexico | 0 | - | 4.58 | 15,252 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,118 |
| American Political Words | 0 | - | 4.39 | 23,373 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,106 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,483 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,829 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,534 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,191 |
| First Ladies of the United States | 0 | - | 4.28 | 85,352 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,856 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,151 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,621 |
| U.S. President Scramble | 0 | - | 4.40 | 116,410 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,068 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,874 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,073 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,761 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,725 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,807 |
| Official European Union Languages | 0 | - | 4.97 | 237,519 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,235 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,277 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,743 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,427 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| Geography of the French Empire | 0 | - | 4.45 | 26,984 |
| The French Revolution | 0 | - | 4.46 | 23,851 |
| History of France | 0 | - | 4.59 | 56,517 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,070 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,855 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,825 |
| Mythology A-Z | 0 | - | 4.31 | 37,083 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,681 |
| Byzantine History | 0 | - | 4.91 | 28,681 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,940 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| The Vikings! | 0 | - | 4.46 | 28,280 |
| The Portuguese Empire | 0 | - | 4.58 | 12,024 |
| Arthurian Legend | 0 | - | 4.33 | 25,071 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,255 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,056 |
| Geography of the British Empire | 0 | - | 4.48 | 39,567 |
| Medieval English History | 0 | - | 4.53 | 43,380 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,575 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,420 |
| Asia Map Quiz | 0 | - | 4.99 | 910,084 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,160 |
| History of Iran | 0 | - | 4.66 | 16,298 |
| The Iraq War | 0 | - | 4.47 | 15,587 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,067 |
| Chinese Inventions | 0 | - | 4.30 | 33,748 |
| History of China | 0 | - | 4.37 | 56,872 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,470 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,384 |
| Countries by Founding Story | 0 | - | 4.95 | 76,812 |
| Independence from Whom | 0 | - | 4.99 | 210,392 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,212 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,175 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,940 |
| Countries of Africa | 0 | - | 5.00 | 2,518,260 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,590 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,098 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,173 |
| African Capitals by Map | 0 | - | 4.99 | 132,721 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,099 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,833 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,606 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,772 |
| African East Coast | 0 | - | 4.96 | 95,429 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,636 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,290 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,089 |
| African Island Countries | 0 | - | 4.96 | 101,084 |
