| Prime Ministers of the UK | 0 | - | 4.95 | 442,566 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,363 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,010 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,208 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,596 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,533 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,985 |
| Countries of the Popes | 0 | - | 4.79 | 128,778 |
| Cities of Ireland | 0 | - | 4.51 | 50,928 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,949 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,671 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,042 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,917 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,009 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,620 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,685 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,260 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,776 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,432 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 113,220 |
| Ancient Greek Words | 0 | - | 4.93 | 112,529 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,978 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,133 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,856 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,583 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,378 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,674 |
| Presidential Middle Names | 0 | - | 4.41 | 60,750 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,709 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,912 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,220 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,640 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,864 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,896 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,427 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,620 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,854 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,903 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,624 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,605 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,175 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,475 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,404 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,577 |
| Pope Facts | 0 | - | 4.39 | 31,400 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,936 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,758 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,122 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,981 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,845 |
| Name the English Monarchs | 0 | - | 4.91 | 506,805 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,892 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,031 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,582 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,122 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,046 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,603 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,069 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,372 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,782 |
| First Ladies of the United States | 0 | - | 4.28 | 85,995 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,075 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,323 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,502 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,370 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,105 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,240 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,833 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,953 |
| Every European Country Shape | 0 | - | 4.96 | 203,086 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,227 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,765 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,442 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,661 |
| The Trojan War | 0 | - | 4.83 | 40,006 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,239 |
| Name that Greek Letter | 0 | - | 4.93 | 325,076 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,019 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,613 |
| Roman Emperors | 0 | - | 4.95 | 121,276 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 104,036 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,704 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,428 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,908 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,799 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,507 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,449 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,605 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,487 |
| National Founders | 0 | - | 4.40 | 83,981 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,784 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,759 |
| The John Adams Presidency | 0 | - | 4.12 | 8,795 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,780 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,934 |
| The American Revolution | 0 | - | 4.52 | 54,365 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,402 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,943 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,845 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,902 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,157 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,795 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,641 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,498 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,727 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,372 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,473 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,853 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,052 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,432 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,848 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,796 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 871,869 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,937 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,075 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,534 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,399 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,150 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,866 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,266 |
| The George Washington Presidency | 0 | - | 4.03 | 14,616 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,993 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,386 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,766 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,612 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,532 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,666 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,621 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,642 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,201 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,205 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,636 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,492 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,557 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,633 |
| History of Italy | 0 | - | 4.55 | 32,160 |
| Roman History by Picture | 0 | - | 4.46 | 26,596 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,892 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,434 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,111 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,274 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,826 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,237 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,919 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,630 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,782 |
| Communist Countries in History | 0 | - | 4.63 | 498,382 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,306 |
| History of South Africa | 0 | - | 4.60 | 17,767 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,700 |
| Australian Capitals | 0 | - | 4.92 | 62,839 |
| History of Mexico | 0 | - | 4.52 | 15,367 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,058 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,158 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 636,153 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,613 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,288 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,934 |
| U.S. President Scramble | 0 | - | 4.40 | 117,491 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,358 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,052 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,095 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,667 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,773 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,491 |
| Official European Union Languages | 0 | - | 4.97 | 239,870 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,702 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,048 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,100 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,940 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,447 |
| History of Austria | 0 | - | 4.70 | 17,978 |
| Geography of the French Empire | 0 | - | 4.45 | 27,221 |
| The French Revolution | 0 | - | 4.47 | 24,152 |
| History of France | 0 | - | 4.61 | 57,656 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,562 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,876 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,248 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,053 |
| Mythology A-Z | 0 | - | 4.31 | 37,411 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,959 |
| Can You Name All Of One Direction's Songs? | 0 | - | 4.52 | 96,863 |
| Countries Italy Declared War On | 0 | - | 4.70 | 45,906 |
| Byzantine History | 0 | - | 4.91 | 29,030 |
| Byzantine Emperors | 0 | - | 4.93 | 14,617 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| The Portuguese Empire | 0 | - | 4.58 | 12,113 |
| Arthurian Legend | 0 | - | 4.33 | 25,179 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,529 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,468 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,292 |
| Geography of the British Empire | 0 | - | 4.48 | 39,852 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,334 |
| Medieval English History | 0 | - | 4.53 | 43,662 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,992 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,653 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,773 |
