| Prime Ministers of the UK | 0 | - | 4.95 | 438,402 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,693,069 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,265 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,907 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,914 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,067 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,032 |
| Countries of the Popes | 0 | - | 4.79 | 128,011 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,467 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,164 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,286 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,975 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,408 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,329 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,761 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,724 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,193 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,317 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,921 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,833 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,898 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,584 |
| Ancient Greek Words | 0 | - | 4.93 | 111,472 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,727 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,062 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,309 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,614 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,365 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,695 |
| Presidential Middle Names | 0 | - | 4.41 | 60,173 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,260 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,533 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,962 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,391 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,577 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,216 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,064 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,309 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,495 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,853 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,752 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,501 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,675 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,934 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,430 |
| Pope Facts | 0 | - | 4.39 | 31,223 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,846 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,669 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,743 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,535 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,837 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,864 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,430 |
| Name the English Monarchs | 0 | - | 4.91 | 502,089 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,132 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,514 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,518 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,164 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,247 |
| First Ladies of the United States | 0 | - | 4.28 | 85,594 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,945 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,214 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,013 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,179 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,948 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,662 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,814 |
| Every European Country Shape | 0 | - | 4.96 | 201,464 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,882 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,452 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,041 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,465 |
| The Trojan War | 0 | - | 4.83 | 39,682 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,769 |
| Name that Greek Letter | 0 | - | 4.93 | 323,276 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,693 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,479 |
| Roman Emperors | 0 | - | 4.95 | 119,824 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,743 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,029 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,732 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,198 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,356 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,013 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,723 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,246 |
| National Founders | 0 | - | 4.40 | 83,815 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,619 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,721 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,641 |
| The John Adams Presidency | 0 | - | 4.12 | 8,742 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,737 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,847 |
| The American Revolution | 0 | - | 4.52 | 54,230 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,368 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,785 |
| Flags of Countries That Border France | 0 | - | 4.88 | 122,801 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,936 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,516 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,430 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,756 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,815 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,806 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,174 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,195 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,748 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,923 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,580 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,323 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 858,580 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,933 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,127 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,395 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,317 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,776 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,794 |
| The George Washington Presidency | 0 | - | 4.03 | 14,539 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,926 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,313 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,670 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,940 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,587 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,029 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,132 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,194 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,951 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,273 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,825 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,218 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,406 |
| History of Russia Quiz | 0 | - | 4.47 | 31,903 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,266 |
| History of Italy | 0 | - | 4.55 | 31,959 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,585 |
| Roman History by Picture | 0 | - | 4.46 | 26,447 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,722 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,640 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,200 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,831 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,208 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,639 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,777 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,799 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,208 |
| Communist Countries in History | 0 | - | 4.63 | 495,284 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,263 |
| History of India | 0 | - | 4.62 | 21,410 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,420 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,380 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,034 |
| History of South Africa | 0 | - | 4.60 | 17,676 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,487 |
| Australian Capitals | 0 | - | 4.92 | 62,714 |
| History of Mexico | 0 | - | 4.58 | 15,301 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,846 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,952 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 626,461 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,487 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,181 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,657 |
| U.S. President Scramble | 0 | - | 4.40 | 116,709 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,170 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,864 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,205 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,063 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,600 |
| Official European Union Languages | 0 | - | 4.97 | 238,332 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,737 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,874 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,069 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,747 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,972 |
| History of Austria | 0 | - | 4.70 | 17,851 |
| Geography of the French Empire | 0 | - | 4.45 | 27,043 |
| The French Revolution | 0 | - | 4.46 | 23,922 |
| History of France | 0 | - | 4.59 | 56,920 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,472 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,966 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,896 |
| Mythology A-Z | 0 | - | 4.31 | 37,196 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,768 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,696 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,290 |
| Byzantine History | 0 | - | 4.91 | 28,792 |
| History of The Netherlands | 0 | - | 4.46 | 17,426 |
| The Vikings! | 0 | - | 4.46 | 28,334 |
| The Portuguese Empire | 0 | - | 4.58 | 12,057 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,458 |
| Arthurian Legend | 0 | - | 4.33 | 25,105 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,321 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,399 |
| Geography of the British Empire | 0 | - | 4.48 | 39,650 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,245 |
| Medieval English History | 0 | - | 4.53 | 43,491 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,604 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,637 |
| Asia Map Quiz | 0 | - | 4.99 | 915,715 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,870 |
| History of Iran | 0 | - | 4.66 | 16,349 |
