| Prime Ministers of the UK | 0 | - | 4.96 | 434,168 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,975 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,697 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,481 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,431 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,115 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,363 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,125 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,403 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,058 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,053 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,158 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,286 |
| Name that Greek Letter | 0 | - | 4.94 | 321,455 |
| Monty Python Quotes | 0 | - | 4.88 | 42,306 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,521 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,616 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,087 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,920 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,973 |
| Countries of the Popes | 0 | - | 4.79 | 127,089 |
| National Founders | 0 | - | 4.40 | 83,623 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,316 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,377 |
| Ancient Greek Words | 0 | - | 4.92 | 110,558 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,312 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,805 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,986 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,372 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,632 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,610 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,197 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,582 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,225 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,712 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,554 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,939 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,381 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,563 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,725 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,795 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,304 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,189 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,482 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,795 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,311 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,262 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,003 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,923 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,614 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,188 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,263 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,486 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,294 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,684 |
| UK Immigration by Country | 0 | - | 4.94 | 139,503 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 137,992 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,962 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,140 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,083 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,161 |
| Political Movements by Country | 0 | - | 4.46 | 72,231 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,132 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,716 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,869 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,663 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,138 |
| Every European Country Shape | 0 | - | 4.95 | 199,857 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,153 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,101 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,872 |
| Ireland Country Quiz | 0 | - | 4.69 | 133,825 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,915 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,960 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,740 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,004 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,164 |
| Name the English Monarchs | 0 | - | 4.92 | 497,454 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,469 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,748 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,224 |
| Hindu Countries | 0 | - | 4.85 | 49,451 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,896 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,752 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,856 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,374 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,918 |
| Presidential Middle Names | 0 | - | 4.41 | 59,642 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,678 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,752 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,145 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,565 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,808 |
| Random European Flag to Country | 0 | - | 4.89 | 180,757 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,377 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,314 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,420 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,755 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,549 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,644 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,002 |
| Germany A-Z | 0 | - | 4.56 | 62,279 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,901 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,400 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,659 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Famous Ancient Romans | 0 | - | 4.69 | 84,990 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,189 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,374 |
| Italy A-Z | 0 | - | 4.49 | 57,635 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,165 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,983 |
| Roman Emperors | 0 | - | 4.95 | 118,316 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,761 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,288 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,765 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,333 |
| Middle Earth Geography | 0 | - | 4.56 | 39,511 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,782 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,518 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,099 |
| British History A-Z #1 | 0 | - | 4.45 | 45,756 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,287 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,906 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 138,916 |
| Scotland A-Z | 0 | - | 4.73 | 41,015 |
| Pope Facts | 0 | - | 4.39 | 31,016 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,806 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,646 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,894 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,959 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,200 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,709 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,326 |
| The American Revolution | 0 | - | 4.52 | 54,037 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,036 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,312 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,052 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,713 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,070 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,303 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,560 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,976 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,269 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Italy by Picture | 0 | - | 4.41 | 30,714 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,156 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,465 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,963 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,620 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,358 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,276 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,257 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,063 |
| Animals in British History | 0 | - | 4.44 | 25,862 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,584 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 850,436 |
| The Vietnam War | 0 | - | 4.43 | 35,278 |
| History of India | 0 | - | 4.61 | 21,265 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,365 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,356 |
| History of South Africa | 0 | - | 4.60 | 17,592 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,064 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,452 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,801 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,155 |
| First Ladies of the United States | 0 | - | 4.28 | 85,198 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,807 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,188 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,987 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,819 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,954 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,132 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,720 |
| Most Forested European Countries | 0 | - | 4.80 | 74,865 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,521 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,153 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,030 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,485 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,100 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,756 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,488 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,850 |
| Geography of the French Empire | 0 | - | 4.48 | 26,915 |
| The French Revolution | 0 | - | 4.46 | 23,752 |
| History of France | 0 | - | 4.59 | 55,901 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,902 |
| German History A-Z | 0 | - | 4.49 | 24,184 |
| Mythology A-Z | 0 | - | 4.31 | 36,963 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,705 |
| Countries that Beat Ireland | 0 | - | 4.39 | 34,067 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,442 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,937 |
