| Prime Ministers of the UK | 0 | - | 4.96 | 436,315 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,671,072 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,830 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,769 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,643 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,507 |
| Countries of the Popes | 0 | - | 4.79 | 127,542 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,806 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,562 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,243 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,813 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,777 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,652 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,764 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,036 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,012 |
| Ancient Greek Words | 0 | - | 4.93 | 111,036 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,615 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,217 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,862 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,285 |
| Presidential Middle Names | 0 | - | 4.41 | 59,890 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,236 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,940 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,136 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,256 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,557 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,893 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,438 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,162 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,716 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,042 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,421 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,889 |
| Pope Facts | 0 | - | 4.39 | 31,122 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,022 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,611 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,742 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,839 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,440 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,784 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,893 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,426 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,313 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,432 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,369 |
| Biggest British Empire Countries | 0 | - | 4.73 | 99,378 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,247 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,118 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,652 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,414 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,552 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,191 |
| First Ladies of the United States | 0 | - | 4.28 | 85,353 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,151 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,631 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,070 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,875 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,666 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,726 |
| Every European Country Shape | 0 | - | 4.96 | 200,729 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,601 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,302 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,782 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,751 |
| Name the English Monarchs | 0 | - | 4.92 | 499,737 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,738 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,573 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,626 |
| National Founders | 0 | - | 4.40 | 83,719 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,174 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,856 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,227 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,276 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,411 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,378 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,703 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,674 |
| The Trojan War | 0 | - | 4.83 | 39,540 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,167 |
| Name that Greek Letter | 0 | - | 4.93 | 322,393 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,143 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,068 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,963 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,982 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,242 |
| Roman Emperors | 0 | - | 4.95 | 119,077 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,955 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,033 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,258 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,129 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,127 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 854,624 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,865 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,823 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,154 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,275 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,538 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,063 |
| The George Washington Presidency | 0 | - | 4.03 | 14,498 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,681 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,556 |
| The John Adams Presidency | 0 | - | 4.12 | 8,701 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,898 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,708 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,259 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,636 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,633 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,805 |
| The American Revolution | 0 | - | 4.52 | 54,131 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,370 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,142 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,856 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,548 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,618 |
| History of Russia Quiz | 0 | - | 4.49 | 31,832 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,430 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,602 |
| History of Italy | 0 | - | 4.55 | 31,885 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,561 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,549 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,073 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,899 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,694 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,169 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,279 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,446 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,295 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,888 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,060 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,673 |
| History of India | 0 | - | 4.61 | 21,332 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,260 |
| History of South Africa | 0 | - | 4.60 | 17,632 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,957 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,693 |
| U.S. President Scramble | 0 | - | 4.40 | 116,425 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,074 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,764 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,885 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,263 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,437 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,830 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,562 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,767 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,575 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,806 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,751 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| Geography of the French Empire | 0 | - | 4.45 | 26,985 |
| The French Revolution | 0 | - | 4.46 | 23,851 |
| History of France | 0 | - | 4.59 | 56,529 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,074 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,738 |
| Mythology A-Z | 0 | - | 4.31 | 37,086 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,711 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,702 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,518 |
| Roman History by Picture | 0 | - | 4.46 | 26,386 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,157 |
| Byzantine History | 0 | - | 4.91 | 28,685 |
| The Vikings! | 0 | - | 4.46 | 28,280 |
| The Portuguese Empire | 0 | - | 4.58 | 12,025 |
| Arthurian Legend | 0 | - | 4.33 | 25,072 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,058 |
| Geography of the British Empire | 0 | - | 4.48 | 39,567 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,214 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,576 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,047 |
| History of Iran | 0 | - | 4.66 | 16,298 |
| Vietnam War Countries | 0 | - | 4.83 | 93,854 |
| History of China | 0 | - | 4.37 | 56,883 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,011 |
| Communist Countries in History | 0 | - | 4.63 | 493,671 |
| Political Movements by Country | 0 | - | 4.46 | 72,366 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,283 |
| Countries of Africa | 0 | - | 5.00 | 2,518,564 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,708 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,190 |
| African East Coast | 0 | - | 4.96 | 95,443 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,296 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,986 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,132 |
| Australian Capitals | 0 | - | 4.92 | 62,646 |
| Australia Map Quiz | 0 | - | 4.94 | 343,131 |
| History of Mexico | 0 | - | 4.58 | 15,253 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,306 |
| Arms Exports - United States | 0 | - | 4.75 | 61,734 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,828 |
| U.S. States by Governor | 0 | - | 4.43 | 18,009 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,611 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,592 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,105 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 621,812 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,399 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,119 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,976 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,526 |
