| Prime Ministers of the UK | 0 | - | 4.96 | 434,375 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,659 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,999 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,725 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,493 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,460 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,158 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,389 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,173 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,651,063 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,094 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,069 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,195 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,499 |
| Name that Greek Letter | 0 | - | 4.94 | 321,503 |
| Monty Python Quotes | 0 | - | 4.88 | 42,313 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,531 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,622 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,156 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,928 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,036 |
| Countries of the Popes | 0 | - | 4.79 | 127,134 |
| National Founders | 0 | - | 4.40 | 83,634 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,450 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,404 |
| Ancient Greek Words | 0 | - | 4.92 | 110,617 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,331 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,835 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,996 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,432 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,697 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,638 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,241 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,625 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,275 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,757 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,584 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,024 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,387 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,568 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,772 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,819 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,328 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,243 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,501 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,846 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,343 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,305 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,042 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,952 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,633 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,200 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,270 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,500 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,300 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,708 |
| UK Immigration by Country | 0 | - | 4.94 | 139,533 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,052 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,014 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,141 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,136 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Political Movements by Country | 0 | - | 4.46 | 72,242 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,145 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,720 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,874 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,367 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,668 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,178 |
| Every European Country Shape | 0 | - | 4.96 | 199,999 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,165 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,117 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,907 |
| Ireland Country Quiz | 0 | - | 4.69 | 133,847 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,924 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,981 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,749 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,006 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,197 |
| Name the English Monarchs | 0 | - | 4.92 | 497,616 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,488 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,910 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,263 |
| Hindu Countries | 0 | - | 4.85 | 49,500 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,924 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,833 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,891 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,408 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,948 |
| Presidential Middle Names | 0 | - | 4.41 | 59,660 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,697 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,769 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,150 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,622 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,848 |
| Random European Flag to Country | 0 | - | 4.89 | 180,818 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,417 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,326 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,463 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,784 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,564 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,657 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,087 |
| Germany A-Z | 0 | - | 4.56 | 62,294 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,945 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,425 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,661 |
| The Trojan War | 0 | - | 4.83 | 39,410 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,002 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,196 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,452 |
| Italy A-Z | 0 | - | 4.49 | 57,668 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,220 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,013 |
| Roman Emperors | 0 | - | 4.95 | 118,366 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,790 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,309 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,795 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,366 |
| Middle Earth Geography | 0 | - | 4.56 | 39,519 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,805 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,528 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,129 |
| British History A-Z #1 | 0 | - | 4.45 | 45,778 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,296 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,923 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 138,997 |
| Scotland A-Z | 0 | - | 4.73 | 41,025 |
| Pope Facts | 0 | - | 4.39 | 31,025 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,811 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,654 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,908 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,965 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,280 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,721 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,353 |
| The American Revolution | 0 | - | 4.52 | 54,042 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,220 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,360 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,165 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,824 |
| History of Russia Quiz | 0 | - | 4.49 | 31,782 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,095 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,322 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,572 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,455 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,280 |
| History of Italy | 0 | - | 4.55 | 31,806 |
| Italy by Picture | 0 | - | 4.41 | 30,720 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,301 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,968 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,638 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,371 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,304 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,262 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,075 |
| Animals in British History | 0 | - | 4.44 | 25,865 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,589 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 850,840 |
| The Vietnam War | 0 | - | 4.43 | 35,283 |
| History of India | 0 | - | 4.61 | 21,271 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,414 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,381 |
| History of South Africa | 0 | - | 4.60 | 17,598 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,070 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,457 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,804 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,160 |
| First Ladies of the United States | 0 | - | 4.28 | 85,217 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,809 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,102 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,215 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,992 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,823 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,677 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,136 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,137 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,729 |
| Most Forested European Countries | 0 | - | 4.80 | 74,881 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,527 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,164 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,085 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,554 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,220 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,759 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,510 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,859 |
| Geography of the French Empire | 0 | - | 4.48 | 26,920 |
| The French Revolution | 0 | - | 4.46 | 23,762 |
| History of France | 0 | - | 4.59 | 55,950 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,378 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,917 |
| German History A-Z | 0 | - | 4.49 | 24,199 |
| Mythology A-Z | 0 | - | 4.31 | 36,977 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,792 |
| Countries that Beat Ireland | 0 | - | 4.39 | 34,077 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,450 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,944 |
