| Prime Ministers of the UK | 0 | - | 4.96 | 436,645 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,674,087 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,794 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,635 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,677 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,432 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,864 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,581 |
| Countries of the Popes | 0 | - | 4.79 | 127,607 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,659 |
| Name the English Monarchs | 0 | - | 4.92 | 500,125 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,624 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,281 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,186 |
| The Trojan War | 0 | - | 4.83 | 39,567 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,631 |
| Name that Greek Letter | 0 | - | 4.93 | 322,549 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,167 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,287 |
| Roman Emperors | 0 | - | 4.95 | 119,243 |
| Monty Python Quotes | 0 | - | 4.88 | 42,378 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,874 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,083 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,077 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,895 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,010 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,935 |
| 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 | 108,270 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,937 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,331 |
| Presidential Middle Names | 0 | - | 4.41 | 59,934 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,389 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,984 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,208 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,284 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,351 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,743 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,449 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,152 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,836 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,285 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,330 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,621 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,829 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,858 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,695 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,941 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,668 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,887 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,538 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,866 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,959 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,490 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,381 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,208 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,455 |
| 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 | 401,130 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,007 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,667 |
| Animals in British History | 0 | - | 4.44 | 25,934 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,646 |
| Pope Facts | 0 | - | 4.39 | 31,133 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,312 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,174 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,682 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,633 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,198 |
| First Ladies of the United States | 0 | - | 4.28 | 85,377 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,161 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,672 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,085 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,886 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,788 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,734 |
| Every European Country Shape | 0 | - | 4.96 | 200,831 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,294 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,791 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,080 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,416 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,634 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,027 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,698 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,975 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,414 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,851 |
| Counties of Ireland | 0 | - | 4.92 | 194,038 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,635 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,147 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,903 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,302 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,426 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,229 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,850 |
| UK Immigration by Country | 0 | - | 4.94 | 140,360 |
| Arthurian Legend | 0 | - | 4.33 | 25,076 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,964 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,563 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,339 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,490 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,056 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,007 |
| Scotland Trivia | 0 | - | 4.58 | 57,498 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,706 |
| National Founders | 0 | - | 4.40 | 83,738 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,232 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,434 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,874 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,335 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,515 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,871 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,204 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,875 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,324 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,818 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,753 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,312 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,251 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,539 |
| Ireland Country Quiz | 0 | - | 4.68 | 134,211 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,124 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,629 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,789 |
| Roman Names for Places | 0 | - | 4.62 | 58,058 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,143 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,473 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,952 |
| Biggest Cities in Spain | 0 | - | 4.64 | 170,456 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,083 |
| Spain by Picture | 0 | - | 4.21 | 14,731 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,671 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,660 |
| World Capitals Closest to Madrid | 0 | - | 4.50 | 42,388 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,136 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,425 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,870 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,687 |
| British History A-Z #1 | 0 | - | 4.45 | 46,302 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,469 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,492 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,344 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,084 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,197 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,548 |
| 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 | 527,799 |
| Random European Flag to Country | 0 | - | 4.89 | 181,565 |
| History of Russia Quiz | 0 | - | 4.49 | 31,844 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,466 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,828 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,647 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 74,751 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,081 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,423 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,454 |
| Ancient Greek Words | 0 | - | 4.93 | 111,099 |
| History of Italy | 0 | - | 4.55 | 31,898 |
| Italy by Picture | 0 | - | 4.41 | 30,832 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,604 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,136 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,567 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,729 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,535 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,092 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,820 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 131,685 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,716 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,347 |
| 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 | 139,970 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 855,158 |
| The Wales Quiz | 0 | - | 4.47 | 29,077 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,874 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,866 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,398 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,178 |
| 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 | 219,530 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,254 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,957 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,850 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,652 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,766 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,035 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,496 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,091 |
