| Prime Ministers of the UK | 0 | - | 4.95 | 440,080 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,560 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,003 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,192 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,988 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,435 |
| Countries of the Popes | 0 | - | 4.79 | 128,344 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,381 |
| Name the English Monarchs | 0 | - | 4.91 | 503,966 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,266 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,645 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,089 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,981 |
| The Trojan War | 0 | - | 4.83 | 39,799 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,903 |
| Name that Greek Letter | 0 | - | 4.93 | 324,176 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,251 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,654 |
| Roman Emperors | 0 | - | 4.95 | 120,400 |
| Monty Python Quotes | 0 | - | 4.89 | 42,510 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,693 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,679 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,514 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,854 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,543 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,074 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,777 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,494 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,098 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,927 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,721 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,000 |
| Presidential Middle Names | 0 | - | 4.41 | 60,410 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,316 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,453 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,669 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,485 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,646 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,197 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,686 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,032 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,279 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,171 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,978 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,704 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,759 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,053 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,607 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,477 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,730 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,864 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,755 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,447 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,109 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,325 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,143 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,803 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,857 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,554 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,865 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,236 |
| Countries Bordering France | 0 | - | 4.83 | 403,567 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,691 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,162 |
| Animals in British History | 0 | - | 4.43 | 26,043 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,897 |
| Pope Facts | 0 | - | 4.39 | 31,293 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,094 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,769 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,939 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,495 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,747 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,248 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,254 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,237 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,998 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,076 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| Every European Country Shape | 0 | - | 4.96 | 202,212 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,586 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,015 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,813 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,951 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,855 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,665 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,163 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,966 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,286 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,376 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,983 |
| Counties of Ireland | 0 | - | 4.92 | 196,067 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,022 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,418 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,358 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,300 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,801 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,267 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,368 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,513 |
| UK Immigration by Country | 0 | - | 4.94 | 141,166 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,177 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,998 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,767 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,276 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,805 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,008 |
| Scotland Trivia | 0 | - | 4.58 | 57,656 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,476 |
| National Founders | 0 | - | 4.40 | 83,883 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,710 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,556 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,981 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,384 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,517 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,653 |
| Biggest Cities in France | 0 | - | 4.70 | 224,422 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,437 |
| France by Picture | 0 | - | 4.24 | 21,734 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,363 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,034 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,744 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,205 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,509 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,898 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,712 |
| Ireland Country Quiz | 0 | - | 4.69 | 134,684 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,653 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,792 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,992 |
| Roman Names for Places | 0 | - | 4.62 | 58,400 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,745 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,888 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,514 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,067 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,737 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,752 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,400 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,845 |
| British History A-Z #1 | 0 | - | 4.45 | 46,585 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,778 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,810 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,751 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,758 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,549 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,678 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,749 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,672 |
| 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 | 12,870 |
| The American Revolution | 0 | - | 4.52 | 54,294 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,596 |
| Random European Flag to Country | 0 | - | 4.89 | 182,979 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,390 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,027 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,500 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 75,018 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,177 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,909 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,524 |
| Ancient Greek Words | 0 | - | 4.93 | 111,915 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Italy by Picture | 0 | - | 4.41 | 30,988 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,011 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,204 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,721 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,814 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,987 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,296 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 160,916 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 132,576 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,957 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,126 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,426 |
| Shakespearean Characters | 0 | - | 4.38 | 37,679 |
| English Royal Consorts | 0 | - | 4.38 | 37,412 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,014 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,971 |
| The Wales Quiz | 0 | - | 4.47 | 29,202 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,982 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,294 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,602 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,367 |
| The George Washington Presidency | 0 | - | 4.03 | 14,568 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,948 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,334 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,707 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,216 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,337 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,623 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,345 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,053 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,295 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,329 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,596 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,216 |
