| Prime Ministers of the UK | 0 | - | 4.95 | 442,226 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,725,179 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,194 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,550 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,720 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,905 |
| Countries of the Popes | 0 | - | 4.79 | 128,725 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,832 |
| Name the English Monarchs | 0 | - | 4.91 | 506,292 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,620 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,921 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,682 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,422 |
| The Trojan War | 0 | - | 4.83 | 39,982 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,778 |
| Name that Greek Letter | 0 | - | 4.93 | 324,951 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,929 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,581 |
| Roman Emperors | 0 | - | 4.95 | 121,176 |
| Monty Python Quotes | 0 | - | 4.89 | 42,606 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,267 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,006 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,514 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,987 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,960 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,468 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,279 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,567 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,131 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,553 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,318 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,620 |
| Presidential Middle Names | 0 | - | 4.41 | 60,722 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,567 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,687 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,895 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,629 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,359 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,436 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 106,898 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,727 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,496 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,397 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,191 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,750 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,812 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,195 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,773 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,859 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,345 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,413 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,342 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,338 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,739 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,819 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,551 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,541 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,139 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,645 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,928 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,357 |
| Countries Bordering France | 0 | - | 4.83 | 404,852 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,801 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,000 |
| Animals in British History | 0 | - | 4.43 | 26,095 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,022 |
| Pope Facts | 0 | - | 4.39 | 31,383 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,093 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,969 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,362 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,768 |
| First Ladies of the United States | 0 | - | 4.28 | 85,949 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,313 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,464 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,360 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,097 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 58,732 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,760 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,943 |
| Every European Country Shape | 0 | - | 4.96 | 202,961 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,744 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,181 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,672 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,294 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,080 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,937 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,775 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,143 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,463 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,588 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,659 |
| Counties of Ireland | 0 | - | 4.92 | 197,276 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,245 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,644 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,364 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,646 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,053 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,820 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,098 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,859 |
| UK Immigration by Country | 0 | - | 4.94 | 141,696 |
| Arthurian Legend | 0 | - | 4.33 | 25,174 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,972 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,286 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 69,021 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,346 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,053 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,289 |
| Scotland Trivia | 0 | - | 4.58 | 57,755 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,962 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,506 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,089 |
| National Founders | 0 | - | 4.40 | 83,973 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,000 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,595 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,066 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,098 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,194 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,437 |
| Biggest Cities in France | 0 | - | 4.70 | 225,278 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,491 |
| France by Picture | 0 | - | 4.24 | 21,783 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,688 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,185 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,293 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,547 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,628 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,293 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,839 |
| Ireland Country Quiz | 0 | - | 4.69 | 135,218 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,164 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,282 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,204 |
| Roman Names for Places | 0 | - | 4.62 | 58,697 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,138 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 52,144 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,868 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,311 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,337 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,064 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,954 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,732 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,960 |
| British History A-Z #1 | 0 | - | 4.45 | 47,254 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,944 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,073 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,043 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 406,537 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,778 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,752 |
| The John Adams Presidency | 0 | - | 4.12 | 8,788 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,776 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,925 |
| The American Revolution | 0 | - | 4.52 | 54,356 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,440 |
| Random European Flag to Country | 0 | - | 4.90 | 184,188 |
| History of Russia Quiz | 0 | - | 4.47 | 32,003 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,782 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,137 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,852 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 75,196 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,237 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,676 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,574 |
| Ancient Greek Words | 0 | - | 4.93 | 112,439 |
| History of Italy | 0 | - | 4.55 | 32,142 |
| Italy by Picture | 0 | - | 4.41 | 31,088 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,308 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,258 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,817 |
| Countries Once Held by Sweden | 0 | - | 4.18 | 34,856 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,220 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,420 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 161,729 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 133,128 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,092 |
| Satellite Images - The United Kingdom | 0 | - | 4.41 | 28,180 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,984 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,494 |
| Shakespearean Characters | 0 | - | 4.38 | 37,737 |
| English Royal Consorts | 0 | - | 4.38 | 37,521 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,343 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 871,130 |
| The Wales Quiz | 0 | - | 4.46 | 29,270 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,066 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,508 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,751 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,193 |
| The George Washington Presidency | 0 | - | 4.03 | 14,606 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,989 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,378 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,758 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,578 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,424 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,576 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,438 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,180 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,052 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,474 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,633 |
