| Prime Ministers of the UK | 0 | - | 4.96 | 436,438 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,353 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,850 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,777 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,651 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,819 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,530 |
| Countries of the Popes | 0 | - | 4.79 | 127,558 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,256 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,835 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,812 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,585 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,057 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,163 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,623 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,656 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,883 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,290 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,458 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,084 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,429 |
| Ancient Greek Words | 0 | - | 4.93 | 111,057 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,991 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,023 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,771 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,233 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,890 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,300 |
| Presidential Middle Names | 0 | - | 4.41 | 59,908 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,962 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,176 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,843 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,629 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,917 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,482 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,811 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,913 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,451 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,327 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,177 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,438 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,727 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,373 |
| Pope Facts | 0 | - | 4.39 | 31,124 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,797 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,612 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,273 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,144 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| Biggest British Empire Countries | 0 | - | 4.73 | 99,417 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,783 |
| Name the English Monarchs | 0 | - | 4.92 | 499,888 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,651 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,198 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,419 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,595 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,195 |
| First Ladies of the United States | 0 | - | 4.28 | 85,359 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,863 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,157 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,645 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,074 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,878 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,705 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,729 |
| Every European Country Shape | 0 | - | 4.96 | 200,761 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,260 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,285 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,458 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,382 |
| The Trojan War | 0 | - | 4.83 | 39,549 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,314 |
| Name that Greek Letter | 0 | - | 4.93 | 322,454 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,106 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,257 |
| Roman Emperors | 0 | - | 4.95 | 119,152 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,990 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,619 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,316 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,801 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,262 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,761 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,583 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,130 |
| National Founders | 0 | - | 4.40 | 83,727 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,542 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,685 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,561 |
| The John Adams Presidency | 0 | - | 4.12 | 8,704 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,710 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,806 |
| The American Revolution | 0 | - | 4.52 | 54,136 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,882 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,706 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,443 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,621 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,720 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,194 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,995 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,019 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,575 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,040 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,921 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,304 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,944 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,092 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,137 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 854,786 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,867 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,835 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,169 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,278 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,960 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,695 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,090 |
| The George Washington Presidency | 0 | - | 4.03 | 14,501 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,901 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,262 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,637 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,653 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,437 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,180 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,201 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,586 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,836 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,595 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,677 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,607 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,840 |
| History of Russia Quiz | 0 | - | 4.49 | 31,836 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,082 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,520 |
| Roman History by Picture | 0 | - | 4.46 | 26,390 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,197 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,553 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,701 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,170 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,448 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,303 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,691 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,028 |
| Communist Countries in History | 0 | - | 4.63 | 493,747 |
| History of India | 0 | - | 4.61 | 21,336 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,294 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,047 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,309 |
| History of South Africa | 0 | - | 4.60 | 17,635 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,222 |
| Australian Capitals | 0 | - | 4.92 | 62,651 |
| History of Mexico | 0 | - | 4.58 | 15,256 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,697 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,840 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 621,986 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,404 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,126 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,531 |
| U.S. President Scramble | 0 | - | 4.40 | 116,434 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,078 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,770 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,900 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,834 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,387 |
| Official European Union Languages | 0 | - | 4.97 | 237,586 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,273 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,401 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,596 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,898 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,759 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Geography of the French Empire | 0 | - | 4.45 | 26,990 |
| The French Revolution | 0 | - | 4.46 | 23,856 |
| History of France | 0 | - | 4.59 | 56,566 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,781 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| Mythology A-Z | 0 | - | 4.31 | 37,094 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,714 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,762 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,125 |
| Byzantine History | 0 | - | 4.91 | 28,690 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,390 |
| Arthurian Legend | 0 | - | 4.33 | 25,074 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,069 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,219 |
| Medieval English History | 0 | - | 4.53 | 43,387 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,576 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,690 |
| Asia Map Quiz | 0 | - | 4.99 | 910,492 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,086 |
| History of Iran | 0 | - | 4.66 | 16,299 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,071 |
