| Prime Ministers of the UK | 0 | - | 4.96 | 436,668 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,674,293 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,797 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,637 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,679 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,436 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,869 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,586 |
| Countries of the Popes | 0 | - | 4.79 | 127,609 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,666 |
| Name the English Monarchs | 0 | - | 4.92 | 500,134 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,626 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,283 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,193 |
| The Trojan War | 0 | - | 4.83 | 39,569 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,656 |
| Name that Greek Letter | 0 | - | 4.93 | 322,556 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,175 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,288 |
| Roman Emperors | 0 | - | 4.95 | 119,247 |
| Monty Python Quotes | 0 | - | 4.88 | 42,379 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,880 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,089 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,088 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,897 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,021 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,941 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,378 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,029 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,272 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,941 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,334 |
| Presidential Middle Names | 0 | - | 4.41 | 59,935 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,395 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,989 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,211 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,285 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,355 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,745 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,450 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,169 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,836 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,298 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,331 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,622 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,832 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,858 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,698 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,942 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,672 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,894 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,546 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,869 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,969 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,494 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,383 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,210 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,457 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,392 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,712 |
| Countries Bordering France | 0 | - | 4.83 | 401,144 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,016 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,670 |
| Animals in British History | 0 | - | 4.44 | 25,934 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,649 |
| Pope Facts | 0 | - | 4.39 | 31,134 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,318 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,179 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,683 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,634 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,199 |
| First Ladies of the United States | 0 | - | 4.28 | 85,379 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,161 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,673 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,086 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,887 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,793 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,735 |
| Every European Country Shape | 0 | - | 4.96 | 200,837 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,296 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,793 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,089 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,420 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,635 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,031 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,699 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,978 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,427 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,859 |
| Counties of Ireland | 0 | - | 4.92 | 194,046 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,638 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,153 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,914 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,312 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,432 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,237 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,857 |
| UK Immigration by Country | 0 | - | 4.94 | 140,365 |
| Arthurian Legend | 0 | - | 4.33 | 25,076 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,975 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,568 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,340 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,496 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,061 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,010 |
| Scotland Trivia | 0 | - | 4.58 | 57,498 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,713 |
| National Founders | 0 | - | 4.40 | 83,740 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,239 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,434 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,875 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,344 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,524 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,876 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,208 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,879 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,335 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,823 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,760 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,313 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,259 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,540 |
| Ireland Country Quiz | 0 | - | 4.68 | 134,215 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,126 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,631 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,791 |
| Roman Names for Places | 0 | - | 4.62 | 58,061 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,148 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,479 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,952 |
| Biggest Cities in Spain | 0 | - | 4.64 | 170,462 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,083 |
| Spain by Picture | 0 | - | 4.21 | 14,732 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,674 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,661 |
| World Capitals Closest to Madrid | 0 | - | 4.50 | 42,388 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,138 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,429 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,873 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,688 |
| British History A-Z #1 | 0 | - | 4.45 | 46,304 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,470 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,494 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,344 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,110 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,200 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,549 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,690 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,569 |
| The John Adams Presidency | 0 | - | 4.12 | 8,706 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,712 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,811 |
| The American Revolution | 0 | - | 4.52 | 54,149 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,820 |
| Random European Flag to Country | 0 | - | 4.89 | 181,569 |
| History of Russia Quiz | 0 | - | 4.49 | 31,845 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,472 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,828 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,653 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 74,752 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,082 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,442 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,454 |
| Ancient Greek Words | 0 | - | 4.93 | 111,104 |
| History of Italy | 0 | - | 4.55 | 31,900 |
| Italy by Picture | 0 | - | 4.41 | 30,832 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,607 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,137 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,568 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,732 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,538 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,094 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,827 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 131,691 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,720 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,351 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,327 |
| Shakespearean Characters | 0 | - | 4.38 | 37,566 |
| English Royal Consorts | 0 | - | 4.37 | 37,273 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,984 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 855,202 |
| The Wales Quiz | 0 | - | 4.47 | 29,077 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,875 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,869 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,402 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,185 |
| The George Washington Presidency | 0 | - | 4.03 | 14,505 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,903 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,266 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,638 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,682 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,537 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,260 |
| Europe Map Quiz | 0 | - | 5.00 | 4,746,164 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,855 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,660 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,772 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,061 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,500 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,092 |
