| Prime Ministers of the UK | 0 | - | 4.95 | 443,273 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,861 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,099 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,246 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,681 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,631 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,106 |
| Countries of the Popes | 0 | - | 4.78 | 128,917 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,023 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,904 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,640 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,762 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,146 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,566 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,034 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,924 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,931 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,938 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,906 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,627 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,543 |
| Ancient Greek Words | 0 | - | 4.93 | 112,697 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,526 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,146 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,311 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,999 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,681 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,489 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,775 |
| Presidential Middle Names | 0 | - | 4.42 | 60,816 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,756 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,947 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,261 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,661 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,060 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,975 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,587 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,127 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,039 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,043 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,717 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,242 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,517 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,594 |
| Pope Facts | 0 | - | 4.39 | 31,430 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,953 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,770 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,178 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,057 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,621 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,070 |
| Name the English Monarchs | 0 | - | 4.91 | 507,487 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,173 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,727 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,236 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,120 |
| U.S. Bill of Rights | 0 | - | 4.53 | 33,010 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,204 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,383 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,801 |
| First Ladies of the United States | 0 | - | 4.28 | 86,032 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,339 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,545 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,389 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,124 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,668 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,038 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,962 |
| Every European Country Shape | 0 | - | 4.96 | 203,298 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,428 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,833 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,635 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,697 |
| The Trojan War | 0 | - | 4.83 | 40,094 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,120 |
| Name that Greek Letter | 0 | - | 4.93 | 325,345 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,275 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,707 |
| Roman Emperors | 0 | - | 4.95 | 121,466 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 104,178 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,819 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,540 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,040 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.56 | 34,529 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,682 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 52,039 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,519 |
| National Founders | 0 | - | 4.40 | 84,003 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,778 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,788 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,941 |
| The American Revolution | 0 | - | 4.52 | 54,394 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,569 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,971 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,940 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,999 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,420 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,856 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,990 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,739 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,744 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,458 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,525 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,950 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,205 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,800 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,020 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,863 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 873,331 |
| Premier League Relegated Teams | 0 | - | 4.81 | 128,120 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,103 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,598 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,413 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,167 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,879 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,092 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,440 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,004 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,777 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,673 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,793 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,868 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,106 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,133 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,260 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,402 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,935 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,706 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,759 |
| History of Russia Quiz | 0 | - | 4.47 | 32,030 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,669 |
| History of Italy | 0 | - | 4.55 | 32,187 |
| Roman History by Picture | 0 | - | 4.46 | 26,617 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,085 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,856 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,150 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,283 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,857 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,314 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,938 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,702 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,835 |
| Communist Countries in History | 0 | - | 4.63 | 498,832 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,517 |
| Australian Capitals | 0 | - | 4.92 | 62,864 |
| History of Mexico | 0 | - | 4.52 | 15,376 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,892 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,202 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 637,530 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,625 |
| U.S. President Scramble | 0 | - | 4.40 | 117,577 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,372 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,117 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,741 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,311 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,876 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,567 |
| Official European Union Languages | 0 | - | 4.97 | 240,408 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,848 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,455 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,258 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,515 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,518 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| History of France | 0 | - | 4.61 | 57,743 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,106 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,287 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Mythology A-Z | 0 | - | 4.31 | 37,456 |
| Figures from Greek Mythology | 0 | - | 4.92 | 193,167 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,339 |
| Byzantine History | 0 | - | 4.91 | 29,057 |
| Byzantine Emperors | 0 | - | 4.93 | 14,665 |
| History of The Netherlands | 0 | - | 4.46 | 17,574 |
| The Vikings! | 0 | - | 4.46 | 28,425 |
| The Portuguese Empire | 0 | - | 4.58 | 12,119 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,622 |
| Arthurian Legend | 0 | - | 4.33 | 25,195 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,492 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,394 |
| Geography of the British Empire | 0 | - | 4.48 | 39,884 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,343 |
| Medieval English History | 0 | - | 4.53 | 43,693 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,657 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,566 |
| Asia Map Quiz | 0 | - | 4.99 | 926,956 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,064 |
| History of Iran | 0 | - | 4.66 | 16,442 |
| Vietnam War Countries | 0 | - | 4.82 | 94,765 |
| Chinese Inventions | 0 | - | 4.30 | 33,876 |
| History of China | 0 | - | 4.35 | 57,694 |
