| Prime Ministers of the UK | 0 | - | 4.95 | 439,872 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,706,234 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,500 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,996 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,167 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,245 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,382 |
| Countries of the Popes | 0 | - | 4.79 | 128,288 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,610 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,369 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,635 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,230 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,629 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,666 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,829 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,771 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,919 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,192 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,042 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,149 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,528 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,677 |
| Ancient Greek Words | 0 | - | 4.93 | 111,840 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,776 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,088 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,691 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,889 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,670 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 93,950 |
| Presidential Middle Names | 0 | - | 4.41 | 60,376 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,437 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,651 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,034 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,467 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,484 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,425 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,671 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,108 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,017 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,266 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,089 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,766 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,835 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,156 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,487 |
| Pope Facts | 0 | - | 4.39 | 31,283 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,871 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,698 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,045 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,733 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,926 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,824 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,151 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,921 |
| Name the English Monarchs | 0 | - | 4.91 | 503,684 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,421 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,681 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,553 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,429 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,276 |
| First Ladies of the United States | 0 | - | 4.28 | 85,719 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,975 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,243 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,218 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,230 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,992 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,012 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,849 |
| Every European Country Shape | 0 | - | 4.96 | 202,117 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,303 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,559 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,439 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,543 |
| The Trojan War | 0 | - | 4.83 | 39,785 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,561 |
| Name that Greek Letter | 0 | - | 4.93 | 324,096 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,136 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,629 |
| Roman Emperors | 0 | - | 4.95 | 120,320 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,181 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,257 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,023 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,452 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,405 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,220 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,802 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,329 |
| National Founders | 0 | - | 4.40 | 83,869 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,667 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,745 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,662 |
| The John Adams Presidency | 0 | - | 4.12 | 8,758 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,866 |
| The American Revolution | 0 | - | 4.52 | 54,285 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,711 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,856 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,341 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,453 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,086 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,549 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,406 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,459 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,983 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,257 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,387 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,059 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,820 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,991 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,457 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,491 |
| Premier League Relegated Teams | 0 | - | 4.81 | 126,803 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,974 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,272 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,529 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,346 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,100 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,827 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,282 |
| The George Washington Presidency | 0 | - | 4.03 | 14,560 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,945 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,332 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,700 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,179 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,204 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 134,525 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,206 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,348 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,039 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,176 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,175 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,657 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,792 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,364 |
| History of Italy | 0 | - | 4.55 | 32,041 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,641 |
| Roman History by Picture | 0 | - | 4.46 | 26,490 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,145 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,714 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,288 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,939 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,237 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,707 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,944 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,860 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,347 |
| Communist Countries in History | 0 | - | 4.63 | 496,358 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,272 |
| History of India | 0 | - | 4.62 | 21,447 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,507 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,013 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,522 |
| History of South Africa | 0 | - | 4.60 | 17,714 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,569 |
| Australian Capitals | 0 | - | 4.92 | 62,743 |
| History of Mexico | 0 | - | 4.58 | 15,327 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,591 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,022 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,472 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,529 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,210 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,732 |
| U.S. President Scramble | 0 | - | 4.40 | 116,888 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,209 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,937 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,377 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,287 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,757 |
| Official European Union Languages | 0 | - | 4.97 | 238,832 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,076 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,822 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,443 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,372 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,131 |
| History of Austria | 0 | - | 4.70 | 17,897 |
| Geography of the French Empire | 0 | - | 4.45 | 27,149 |
| The French Revolution | 0 | - | 4.47 | 24,050 |
| History of France | 0 | - | 4.59 | 57,234 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,892 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,061 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,944 |
| Mythology A-Z | 0 | - | 4.31 | 37,270 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,497 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,396 |
| Byzantine History | 0 | - | 4.91 | 28,907 |
| Byzantine Emperors | 0 | - | 4.92 | 14,337 |
| History of The Netherlands | 0 | - | 4.46 | 17,471 |
| The Vikings! | 0 | - | 4.46 | 28,366 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,504 |
| Arthurian Legend | 0 | - | 4.33 | 25,128 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,396 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,629 |
| Geography of the British Empire | 0 | - | 4.48 | 39,731 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,269 |
| Medieval English History | 0 | - | 4.53 | 43,561 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,620 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,392 |
| Asia Map Quiz | 0 | - | 4.99 | 918,955 |
