| Prime Ministers of the UK | 0 | - | 4.96 | 434,233 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,997 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,650 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,371 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,149 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,988 |
| Countries of the Popes | 0 | - | 4.79 | 127,104 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,177 |
| Name the English Monarchs | 0 | - | 4.92 | 497,523 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,171 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,983 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,439 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,769 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,369 |
| Name that Greek Letter | 0 | - | 4.94 | 321,474 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,398 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,990 |
| Roman Emperors | 0 | - | 4.95 | 118,340 |
| Monty Python Quotes | 0 | - | 4.88 | 42,307 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,114 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,704 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,125 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,483 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,438 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,388 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,388 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,295 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,989 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,776 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,871 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,384 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,930 |
| Presidential Middle Names | 0 | - | 4.41 | 59,647 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,398 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,683 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,761 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,148 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,209 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,273 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,213 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,568 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,970 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,067 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,563 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,213 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,713 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,658 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,622 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,595 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,241 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,817 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,319 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,273 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,013 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,932 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,718 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,192 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,265 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,618 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,853 |
| Countries Bordering France | 0 | - | 4.85 | 397,525 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,785 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,493 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,984 |
| Animals in British History | 0 | - | 4.44 | 25,863 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,522 |
| Pope Facts | 0 | - | 4.39 | 31,019 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,739 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,804 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,492 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,156 |
| First Ladies of the United States | 0 | - | 4.28 | 85,209 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,200 |
| 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 | 189,156 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| Every European Country Shape | 0 | - | 4.95 | 199,887 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,105 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,068 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,129 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,057 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,687 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,088 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,485 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,763 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,093 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,044 |
| Counties of Ireland | 0 | - | 4.92 | 192,858 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,389 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,918 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,196 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,964 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,694 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,165 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,429 |
| UK Immigration by Country | 0 | - | 4.94 | 139,513 |
| Arthurian Legend | 0 | - | 4.33 | 25,047 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,006 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,274 |
| Most-Visited Countries by the British | 0 | - | 4.63 | 68,034 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,471 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,633 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,715 |
| Scotland Trivia | 0 | - | 4.58 | 57,390 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,094 |
| National Founders | 0 | - | 4.40 | 83,626 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,904 |
| 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 | 94,582 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,817 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,392 |
| Biggest Cities in France | 0 | - | 4.69 | 221,866 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,271 |
| France by Picture | 0 | - | 4.24 | 21,606 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,556 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,029 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,276 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,410 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,189 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,811 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,409 |
| Ireland Country Quiz | 0 | - | 4.69 | 133,835 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,819 |
| 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 | 57,834 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,771 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,218 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,610 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,004 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,411 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,777 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,264 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,342 |
| British History A-Z #1 | 0 | - | 4.45 | 45,770 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,261 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,288 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,044 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,798 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,900 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,452 |
| 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 | 12,765 |
| The American Revolution | 0 | - | 4.52 | 54,039 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,101 |
| Random European Flag to Country | 0 | - | 4.89 | 180,776 |
| History of Russia Quiz | 0 | - | 4.49 | 31,775 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,074 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,651 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,306 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,563 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,973 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,162 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,414 |
| Ancient Greek Words | 0 | - | 4.92 | 110,586 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Italy by Picture | 0 | - | 4.41 | 30,715 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,320 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,109 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,683 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,293 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,965 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,100 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 130,835 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,361 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,814 |
| 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 | 37,145 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,591 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 138,937 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 850,535 |
| 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 | 266,377 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,230 |
| The George Washington Presidency | 0 | - | 4.03 | 14,469 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,862 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,197 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,602 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,332 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,068 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,329 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,374 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,722 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,730 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,131 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,952 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,756 |
| Countries of the German Empire | 0 | - | 4.51 | 37,627 |
