| Prime Ministers of the UK | 0 | - | 4.95 | 442,614 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,523 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,210 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,601 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,856 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,992 |
| Countries of the Popes | 0 | - | 4.79 | 128,784 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,903 |
| Name the English Monarchs | 0 | - | 4.91 | 506,849 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,675 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,951 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,842 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,492 |
| The Trojan War | 0 | - | 4.83 | 40,008 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,274 |
| Name that Greek Letter | 0 | - | 4.93 | 325,082 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,029 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,618 |
| Roman Emperors | 0 | - | 4.95 | 121,280 |
| Monty Python Quotes | 0 | - | 4.89 | 42,614 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,459 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,047 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,653 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,010 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,013 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,631 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,410 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,577 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,134 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,585 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,380 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,677 |
| Presidential Middle Names | 0 | - | 4.41 | 60,753 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,694 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,709 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,912 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,641 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,567 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,475 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 113,409 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,993 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,536 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,569 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,237 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,758 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,861 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,222 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,868 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,898 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,508 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,566 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,432 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,650 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,864 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,907 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,630 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,610 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,179 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,663 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,943 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,374 |
| Countries Bordering France | 0 | - | 4.83 | 405,055 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,976 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,125 |
| Animals in British History | 0 | - | 4.43 | 26,103 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,049 |
| Pope Facts | 0 | - | 4.39 | 31,401 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,122 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,073 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,373 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,784 |
| First Ladies of the United States | 0 | - | 4.28 | 85,997 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,325 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,503 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,370 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,105 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,264 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,840 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,953 |
| Every European Country Shape | 0 | - | 4.96 | 203,099 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,768 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,304 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,813 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,347 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,969 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,864 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,177 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,508 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,793 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,894 |
| Counties of Ireland | 0 | - | 4.92 | 197,412 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,286 |
| Countries Italy Declared War On | 0 | - | 4.70 | 46,169 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,462 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,707 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,115 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,991 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,205 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,913 |
| UK Immigration by Country | 0 | - | 4.94 | 141,775 |
| Arthurian Legend | 0 | - | 4.33 | 25,179 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,102 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,329 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 69,058 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,479 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,091 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,334 |
| Scotland Trivia | 0 | - | 4.58 | 57,769 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,036 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,585 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,128 |
| National Founders | 0 | - | 4.40 | 83,981 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,050 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,604 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,077 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,236 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,456 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,516 |
| Biggest Cities in France | 0 | - | 4.70 | 225,425 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,497 |
| France by Picture | 0 | - | 4.24 | 21,785 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,732 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,380 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,378 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,583 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,655 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,350 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,862 |
| Ireland Country Quiz | 0 | - | 4.69 | 135,271 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,221 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,326 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,223 |
| Roman Names for Places | 0 | - | 4.62 | 58,732 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,191 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 52,196 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,909 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,319 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,375 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,122 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,980 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,805 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,985 |
| British History A-Z #1 | 0 | - | 4.45 | 47,281 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,978 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,110 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,086 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,280 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,784 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,760 |
| The John Adams Presidency | 0 | - | 4.12 | 8,795 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,780 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,935 |
| The American Revolution | 0 | - | 4.52 | 54,366 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,670 |
| Random European Flag to Country | 0 | - | 4.90 | 184,308 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,850 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,169 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,905 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 75,211 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,245 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,944 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,589 |
| Ancient Greek Words | 0 | - | 4.93 | 112,538 |
| History of Italy | 0 | - | 4.55 | 32,160 |
| Italy by Picture | 0 | - | 4.41 | 31,101 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,375 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,269 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Countries Once Held by Sweden | 0 | - | 4.18 | 34,862 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,252 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,435 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 161,844 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 133,210 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,111 |
| Satellite Images - The United Kingdom | 0 | - | 4.41 | 28,192 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,060 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,501 |
| Shakespearean Characters | 0 | - | 4.38 | 37,745 |
| English Royal Consorts | 0 | - | 4.38 | 37,539 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,525 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 871,928 |
| The Wales Quiz | 0 | - | 4.46 | 29,275 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,075 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,535 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,790 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,276 |
| The George Washington Presidency | 0 | - | 4.03 | 14,616 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,993 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,386 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,766 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,612 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,544 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,678 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,850 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,207 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,214 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,654 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,978 |
