| Prime Ministers of the UK | 0 | - | 4.95 | 440,040 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,096 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,537 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,000 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,189 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,276 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,427 |
| Countries of the Popes | 0 | - | 4.79 | 128,336 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,640 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,394 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,677 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,259 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,671 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,856 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,845 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,779 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,024 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,301 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,055 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,206 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,589 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,684 |
| Ancient Greek Words | 0 | - | 4.93 | 111,898 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,983 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,096 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,748 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,920 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,709 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,985 |
| Presidential Middle Names | 0 | - | 4.41 | 60,405 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,449 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,667 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,049 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,484 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,585 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,465 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,741 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,375 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,095 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,312 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,133 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,800 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,853 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,193 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,494 |
| Pope Facts | 0 | - | 4.39 | 31,291 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,874 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,704 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,074 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,761 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,935 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,839 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,182 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,974 |
| Name the English Monarchs | 0 | - | 4.91 | 503,917 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,461 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,705 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,554 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,480 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,280 |
| First Ladies of the United States | 0 | - | 4.28 | 85,736 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,979 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,245 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,249 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,237 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,997 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,066 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,856 |
| Every European Country Shape | 0 | - | 4.96 | 202,193 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,364 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,575 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,498 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,552 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,847 |
| Name that Greek Letter | 0 | - | 4.93 | 324,157 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,235 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,648 |
| Roman Emperors | 0 | - | 4.95 | 120,387 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,223 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,293 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,061 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,504 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,413 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,257 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,813 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,335 |
| National Founders | 0 | - | 4.40 | 83,882 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,676 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,747 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,669 |
| The John Adams Presidency | 0 | - | 4.12 | 8,761 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,749 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,869 |
| The American Revolution | 0 | - | 4.52 | 54,293 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,763 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,863 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,383 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,486 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,162 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,558 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,500 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,534 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,003 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 41,277 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,416 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,111 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,991 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,076 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,485 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,880 |
| Premier League Relegated Teams | 0 | - | 4.81 | 126,900 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,980 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,286 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,543 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,350 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,106 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,353 |
| The George Washington Presidency | 0 | - | 4.03 | 14,564 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,947 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,334 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,705 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,213 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,304 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,605 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,862 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,557 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,049 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,282 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,300 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,713 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,852 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,379 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,644 |
| Roman History by Picture | 0 | - | 4.46 | 26,497 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,204 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,719 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,954 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,244 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,717 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,974 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,863 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,366 |
| Communist Countries in History | 0 | - | 4.63 | 496,494 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,274 |
| History of India | 0 | - | 4.62 | 21,452 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,519 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,654 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,591 |
| History of South Africa | 0 | - | 4.60 | 17,717 |
| Oceania Map Quiz | 0 | - | 4.98 | 650,407 |
| Australian Capitals | 0 | - | 4.92 | 62,754 |
| History of Mexico | 0 | - | 4.58 | 15,334 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,478 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,034 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,958 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,538 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,212 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,747 |
| U.S. President Scramble | 0 | - | 4.40 | 116,922 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,220 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,946 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,399 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,319 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,777 |
| Official European Union Languages | 0 | - | 4.97 | 238,909 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,126 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,014 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,500 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,554 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,149 |
| History of Austria | 0 | - | 4.70 | 17,903 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,063 |
| History of France | 0 | - | 4.59 | 57,268 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,962 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Mythology A-Z | 0 | - | 4.31 | 37,282 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,700 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,413 |
| Byzantine History | 0 | - | 4.91 | 28,916 |
| Byzantine Emperors | 0 | - | 4.92 | 14,356 |
| History of The Netherlands | 0 | - | 4.46 | 17,481 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,512 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,403 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,666 |
| Geography of the British Empire | 0 | - | 4.48 | 39,734 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,275 |
| Medieval English History | 0 | - | 4.53 | 43,571 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,621 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,700 |
| Asia Map Quiz | 0 | - | 4.99 | 919,579 |
