| Prime Ministers of the UK | 0 | - | 4.96 | 436,368 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,671,881 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,770 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,643 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,769 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,520 |
| Countries of the Popes | 0 | - | 4.79 | 127,550 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,608 |
| Name the English Monarchs | 0 | - | 4.92 | 499,832 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,578 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,250 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,124 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,138 |
| The Trojan War | 0 | - | 4.83 | 39,545 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,247 |
| Name that Greek Letter | 0 | - | 4.93 | 322,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,092 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,249 |
| Roman Emperors | 0 | - | 4.95 | 119,140 |
| Monty Python Quotes | 0 | - | 4.88 | 42,369 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,795 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,049 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,984 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,617 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,838 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,857 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,870 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,370 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,023 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,227 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,880 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,294 |
| Presidential Middle Names | 0 | - | 4.41 | 59,901 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,272 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,955 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,166 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,208 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,721 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,424 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,942 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,810 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,099 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,297 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,612 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,758 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,843 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,601 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,905 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,590 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,830 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,473 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,803 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,906 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,446 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,320 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,171 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,437 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,381 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,706 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,024 |
| Countries Bordering France | 0 | - | 4.83 | 400,955 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,876 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,570 |
| Animals in British History | 0 | - | 4.44 | 25,926 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,627 |
| Pope Facts | 0 | - | 4.39 | 31,124 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,262 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,130 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,660 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,577 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,193 |
| First Ladies of the United States | 0 | - | 4.28 | 85,354 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,155 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,643 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,073 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,877 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,685 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,729 |
| Every European Country Shape | 0 | - | 4.96 | 200,751 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,281 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,702 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,976 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,373 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,616 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,000 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,631 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,681 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,958 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,262 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,763 |
| Counties of Ireland | 0 | - | 4.92 | 193,903 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,616 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,122 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,833 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,267 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,375 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,162 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,796 |
| UK Immigration by Country | 0 | - | 4.94 | 140,047 |
| Arthurian Legend | 0 | - | 4.33 | 25,074 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,823 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,517 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,301 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,369 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,014 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,979 |
| Scotland Trivia | 0 | - | 4.58 | 57,481 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,638 |
| National Founders | 0 | - | 4.40 | 83,725 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,189 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,417 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,861 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,244 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,442 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,829 |
| Biggest Cities in France | 0 | - | 4.69 | 222,985 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,324 |
| France by Picture | 0 | - | 4.24 | 21,648 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,837 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,194 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,771 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,715 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,304 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,211 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,527 |
| Ireland Country Quiz | 0 | - | 4.69 | 134,175 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,104 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,612 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,768 |
| Roman Names for Places | 0 | - | 4.62 | 58,032 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,116 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,444 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,926 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,073 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,632 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,090 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,406 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,824 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,676 |
| British History A-Z #1 | 0 | - | 4.45 | 46,278 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,448 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,464 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,317 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,828 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,163 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,540 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,683 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,557 |
| The John Adams Presidency | 0 | - | 4.12 | 8,703 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,710 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,806 |
| The American Revolution | 0 | - | 4.52 | 54,135 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,538 |
| Random European Flag to Country | 0 | - | 4.89 | 181,471 |
| History of Russia Quiz | 0 | - | 4.49 | 31,834 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,440 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,814 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,611 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 74,721 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,066 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,091 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,450 |
| Ancient Greek Words | 0 | - | 4.93 | 111,049 |
| History of Italy | 0 | - | 4.55 | 31,888 |
| Italy by Picture | 0 | - | 4.41 | 30,821 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,567 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,133 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,551 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,724 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,515 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,078 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,720 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 131,616 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,697 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,292 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,316 |
| Shakespearean Characters | 0 | - | 4.38 | 37,559 |
| English Royal Consorts | 0 | - | 4.37 | 37,256 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,866 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 854,709 |
| The Wales Quiz | 0 | - | 4.47 | 29,062 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,867 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,830 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,292 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,081 |
| The George Washington Presidency | 0 | - | 4.03 | 14,501 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,900 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,261 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,637 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,646 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,412 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,166 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,817 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,832 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,573 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,642 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,851 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,453 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,078 |
