| Prime Ministers of the UK | 0 | - | 4.95 | 439,266 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,700,514 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,958 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,051 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,691 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,257 |
| Countries of the Popes | 0 | - | 4.79 | 128,157 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,172 |
| Name the English Monarchs | 0 | - | 4.91 | 502,994 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,127 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,553 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,835 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,783 |
| The Trojan War | 0 | - | 4.83 | 39,744 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,771 |
| Name that Greek Letter | 0 | - | 4.93 | 323,646 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,929 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,556 |
| Roman Emperors | 0 | - | 4.95 | 120,126 |
| Monty Python Quotes | 0 | - | 4.88 | 42,473 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,475 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,513 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,109 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,795 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,394 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,622 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,548 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,467 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,078 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,768 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,532 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 93,843 |
| Presidential Middle Names | 0 | - | 4.41 | 60,299 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,928 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,375 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,616 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,443 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,311 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,049 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,633 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,314 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,173 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,697 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,875 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,691 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,517 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,011 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,910 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,328 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,464 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,638 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,453 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,258 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,756 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,075 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,950 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,636 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,766 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,512 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,824 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,180 |
| Countries Bordering France | 0 | - | 4.83 | 402,684 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,540 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,745 |
| Animals in British History | 0 | - | 4.43 | 26,015 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,837 |
| Pope Facts | 0 | - | 4.39 | 31,256 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,904 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,640 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,893 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,299 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,264 |
| First Ladies of the United States | 0 | - | 4.28 | 85,665 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,231 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,117 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,207 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,973 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,847 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,836 |
| Every European Country Shape | 0 | - | 4.96 | 201,838 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,509 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,800 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,494 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,843 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,785 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,348 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,824 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,888 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,200 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,848 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,702 |
| Counties of Ireland | 0 | - | 4.92 | 195,465 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,884 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,347 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,109 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,153 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,695 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,058 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,062 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,315 |
| UK Immigration by Country | 0 | - | 4.94 | 140,956 |
| Arthurian Legend | 0 | - | 4.33 | 25,118 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,881 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,860 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,629 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,904 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,693 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,876 |
| Scotland Trivia | 0 | - | 4.58 | 57,615 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,287 |
| National Founders | 0 | - | 4.40 | 83,850 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,595 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,540 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,959 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,118 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,273 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,433 |
| Biggest Cities in France | 0 | - | 4.70 | 224,078 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,411 |
| France by Picture | 0 | - | 4.24 | 21,716 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,249 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,606 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,501 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,070 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,451 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,719 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,673 |
| Ireland Country Quiz | 0 | - | 4.69 | 134,575 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,522 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,759 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,948 |
| Roman Names for Places | 0 | - | 4.62 | 58,312 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,616 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,790 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,374 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,180 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,976 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,583 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,676 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,274 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,804 |
| British History A-Z #1 | 0 | - | 4.45 | 46,508 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,687 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,692 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,638 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 401,640 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,469 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,644 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,736 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,652 |
| The John Adams Presidency | 0 | - | 4.12 | 8,750 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,744 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,856 |
| The American Revolution | 0 | - | 4.52 | 54,261 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,730 |
| Random European Flag to Country | 0 | - | 4.89 | 182,578 |
| History of Russia Quiz | 0 | - | 4.47 | 31,924 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,141 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,963 |
| Flags of Countries that Border Germany | 0 | - | 4.85 | 97,278 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 74,962 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,151 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,070 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,505 |
| Ancient Greek Words | 0 | - | 4.93 | 111,665 |
| History of Italy | 0 | - | 4.55 | 31,984 |
| Italy by Picture | 0 | - | 4.41 | 30,951 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,912 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,185 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,671 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,795 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,904 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,245 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 160,584 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 132,307 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,881 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,918 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,399 |
| Shakespearean Characters | 0 | - | 4.38 | 37,653 |
| English Royal Consorts | 0 | - | 4.38 | 37,371 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 141,231 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 859,982 |
| The Wales Quiz | 0 | - | 4.47 | 29,169 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,953 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,190 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,300 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,031 |
| The George Washington Presidency | 0 | - | 4.03 | 14,549 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,935 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,327 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,688 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,051 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,886 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 134,279 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,616 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,002 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,709 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 318,780 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,720 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,985 |
