| Prime Ministers of the UK | 0 | - | 4.96 | 434,249 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,190 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,655 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,374 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,152 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,999 |
| Countries of the Popes | 0 | - | 4.79 | 127,108 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,183 |
| Name the English Monarchs | 0 | - | 4.92 | 497,542 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,177 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,991 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,446 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,773 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,397 |
| Name that Greek Letter | 0 | - | 4.94 | 321,481 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,408 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,996 |
| Roman Emperors | 0 | - | 4.95 | 118,347 |
| Monty Python Quotes | 0 | - | 4.88 | 42,308 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,115 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,709 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,133 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,483 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,440 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,408 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,391 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,297 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,990 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,796 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,875 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,391 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,937 |
| Presidential Middle Names | 0 | - | 4.41 | 59,651 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,403 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,686 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,765 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,149 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,215 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,275 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,233 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,572 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,977 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,068 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,564 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,223 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,717 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,668 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,627 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,602 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,244 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,825 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,329 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,282 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,019 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,943 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,732 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,194 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,267 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,619 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,853 |
| Countries Bordering France | 0 | - | 4.85 | 397,642 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,803 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,493 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,986 |
| Animals in British History | 0 | - | 4.44 | 25,863 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,523 |
| Pope Facts | 0 | - | 4.39 | 31,019 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,748 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,807 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,494 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,158 |
| First Ladies of the United States | 0 | - | 4.28 | 85,211 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,204 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,989 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,819 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,160 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| Every European Country Shape | 0 | - | 4.96 | 199,922 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,107 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,070 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,134 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,059 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,496 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,699 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,089 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,488 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,768 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,102 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,060 |
| Counties of Ireland | 0 | - | 4.92 | 192,865 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,394 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,919 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,200 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,966 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,696 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,172 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,432 |
| UK Immigration by Country | 0 | - | 4.94 | 139,518 |
| Arthurian Legend | 0 | - | 4.33 | 25,047 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,018 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,274 |
| Most-Visited Countries by the British | 0 | - | 4.63 | 68,037 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,477 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,636 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,718 |
| Scotland Trivia | 0 | - | 4.58 | 57,390 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,101 |
| National Founders | 0 | - | 4.40 | 83,626 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,908 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,808 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,589 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,825 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,397 |
| Biggest Cities in France | 0 | - | 4.69 | 221,880 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,271 |
| France by Picture | 0 | - | 4.24 | 21,608 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,556 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,038 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,286 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,414 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,191 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,817 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,409 |
| Ireland Country Quiz | 0 | - | 4.69 | 133,837 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,823 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,516 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,648 |
| Roman Names for Places | 0 | - | 4.62 | 57,835 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,777 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,218 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,612 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,004 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,415 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,782 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,264 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,352 |
| British History A-Z #1 | 0 | - | 4.45 | 45,772 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,262 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,289 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,046 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,813 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,902 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,455 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,454 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,766 |
| The American Revolution | 0 | - | 4.52 | 54,040 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,117 |
| Random European Flag to Country | 0 | - | 4.89 | 180,787 |
| History of Russia Quiz | 0 | - | 4.49 | 31,777 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,082 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,653 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,312 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,566 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,977 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,238 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,415 |
| Ancient Greek Words | 0 | - | 4.92 | 110,596 |
| History of Italy | 0 | - | 4.55 | 31,803 |
| Italy by Picture | 0 | - | 4.41 | 30,716 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,321 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,109 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,469 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,684 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,297 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,965 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,106 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 130,840 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,362 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,815 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,260 |
| Shakespearean Characters | 0 | - | 4.38 | 37,497 |
| English Royal Consorts | 0 | - | 4.37 | 37,146 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,593 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 138,956 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 850,579 |
| The Wales Quiz | 0 | - | 4.47 | 28,992 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,808 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,646 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,381 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,246 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,863 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,198 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,603 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,338 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,102 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,334 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,526 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,723 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,744 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,147 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,954 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,756 |
| Countries of the German Empire | 0 | - | 4.51 | 37,629 |
