| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,672 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,762 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,142 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,403 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,410 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,716 |
| Countries of the Popes | 0 | - | 4.79 | 128,556 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,805 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,592 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,028 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,478 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,848 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,955 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,917 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,830 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,952 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,118 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,506 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,970 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,781 |
| Ancient Greek Words | 0 | - | 4.93 | 112,236 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,035 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,116 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,598 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,177 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,052 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,409 |
| Presidential Middle Names | 0 | - | 4.41 | 60,597 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,565 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,801 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,145 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,567 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,328 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,743 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,076 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,666 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,484 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,617 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,377 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,382 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,030 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,338 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,543 |
| Pope Facts | 0 | - | 4.39 | 31,346 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,729 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,047 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,920 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,354 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,460 |
| Name the English Monarchs | 0 | - | 4.91 | 505,371 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,751 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,330 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,944 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,874 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,578 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,769 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,328 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,717 |
| First Ladies of the United States | 0 | - | 4.28 | 85,858 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,028 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,281 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,383 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,312 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,061 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,568 |
| Every European Country Shape | 0 | - | 4.96 | 202,605 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,781 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,893 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,611 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,690 |
| Name that Greek Letter | 0 | - | 4.93 | 324,653 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,667 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,477 |
| Roman Emperors | 0 | - | 4.95 | 120,876 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,522 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,504 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,713 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,456 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,459 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,904 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,415 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,911 |
| National Founders | 0 | - | 4.40 | 83,933 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,764 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,724 |
| The John Adams Presidency | 0 | - | 4.12 | 8,772 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,760 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,897 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,061 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,906 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,618 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,704 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,693 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,707 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,124 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,982 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,691 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,191 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,380 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,617 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,431 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,857 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,559 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,661 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 868,053 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,468 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,040 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,408 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,130 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,851 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,930 |
| The George Washington Presidency | 0 | - | 4.03 | 14,589 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,970 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,357 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,739 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,439 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,039 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,282 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,550 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,695 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,131 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,675 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,040 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,091 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,195 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,504 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Roman History by Picture | 0 | - | 4.46 | 26,549 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,514 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,379 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,256 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,768 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,094 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,889 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,478 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,662 |
| Communist Countries in History | 0 | - | 4.63 | 497,463 |
| History of South Africa | 0 | - | 4.60 | 17,742 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,860 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| History of Mexico | 0 | - | 4.52 | 15,354 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,708 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,095 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 632,938 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,583 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,256 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,882 |
| U.S. President Scramble | 0 | - | 4.40 | 117,341 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,300 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,029 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,532 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,572 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,934 |
| Official European Union Languages | 0 | - | 4.97 | 239,428 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,437 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,165 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,813 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,891 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,313 |
| History of Austria | 0 | - | 4.70 | 17,950 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| History of France | 0 | - | 4.61 | 57,461 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,541 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,330 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,002 |
| Mythology A-Z | 0 | - | 4.31 | 37,350 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,350 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,557 |
| Byzantine History | 0 | - | 4.91 | 28,987 |
| Byzantine Emperors | 0 | - | 4.92 | 14,498 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,545 |
| Arthurian Legend | 0 | - | 4.33 | 25,156 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,435 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,112 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,293 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,645 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,059 |
| Asia Map Quiz | 0 | - | 4.99 | 922,981 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,291 |
| History of Iran | 0 | - | 4.66 | 16,404 |
| Vietnam War Countries | 0 | - | 4.82 | 94,496 |
| Chinese Inventions | 0 | - | 4.30 | 33,845 |
| History of China | 0 | - | 4.35 | 57,465 |
| History of India | 0 | - | 4.62 | 21,488 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,597 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,895 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,031 |
