| Prime Ministers of the UK | 0 | - | 4.95 | 442,492 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,205 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,944 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,038 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,007 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,002 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,773 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,587 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,827 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,727,049 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,276 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,329 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,664 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,172 |
| Name that Greek Letter | 0 | - | 4.93 | 325,051 |
| Monty Python Quotes | 0 | - | 4.89 | 42,613 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,041 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,940 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,618 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,465 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,964 |
| Countries of the Popes | 0 | - | 4.79 | 128,766 |
| National Founders | 0 | - | 4.40 | 83,979 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,604 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,385 |
| Ancient Greek Words | 0 | - | 4.93 | 112,519 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,367 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,046 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,133 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,674 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,853 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,889 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,520 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,475 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,543 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,597 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,468 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,421 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,528 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,530 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,823 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,756 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,848 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,112 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,417 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,569 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,834 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,884 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,617 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,583 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,170 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,660 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,575 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,965 |
| UK Immigration by Country | 0 | - | 4.94 | 141,753 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,064 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,103 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,273 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,019 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,407 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,572 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,117 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,375 |
| Political Movements by Country | 0 | - | 4.46 | 72,788 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,154 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,148 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,602 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,866 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,822 |
| Every European Country Shape | 0 | - | 4.96 | 203,070 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,828 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,759 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,120 |
| Ireland Country Quiz | 0 | - | 4.69 | 135,262 |
| Countries Italy Declared War On | 0 | - | 4.75 | 45,106 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,691 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,099 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,403 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,316 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,904 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,888 |
| Name the English Monarchs | 0 | - | 4.91 | 506,717 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,597 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,130 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,054 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,035 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,578 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,370 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,666 |
| Presidential Middle Names | 0 | - | 4.41 | 60,747 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,705 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,907 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,640 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,207 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,414 |
| Random European Flag to Country | 0 | - | 4.90 | 184,294 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,494 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,659 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,823 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,470 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,722 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,158 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,325 |
| Germany A-Z | 0 | - | 4.56 | 62,872 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,127 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,573 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,923 |
| The Trojan War | 0 | - | 4.83 | 40,002 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,791 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,651 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,010 |
| Italy A-Z | 0 | - | 4.49 | 58,774 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,475 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,724 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,609 |
| Roman Emperors | 0 | - | 4.95 | 121,259 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,174 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,245 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,109 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,787 |
| Middle Earth Geography | 0 | - | 4.56 | 39,962 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 81,804 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,973 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,421 |
| British History A-Z #1 | 0 | - | 4.45 | 47,275 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,101 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,792 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,500 |
| Scotland A-Z | 0 | - | 4.73 | 41,467 |
| Pope Facts | 0 | - | 4.39 | 31,398 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,221 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,072 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,527 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,595 |
| Hindu Countries | 0 | - | 4.87 | 50,599 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,562 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,249 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,217 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,608 |
| The American Revolution | 0 | - | 4.52 | 54,364 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,515 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,654 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,618 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,181 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,602 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,833 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,900 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 75,206 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,881 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 112,823 |
| History of Italy | 0 | - | 4.55 | 32,157 |
| Italy by Picture | 0 | - | 4.41 | 31,097 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,931 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,828 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,842 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,103 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,803 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,499 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,233 |
| Animals in British History | 0 | - | 4.43 | 26,103 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,888 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 871,752 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,908 |
| The Vietnam War | 0 | - | 4.44 | 35,662 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,780 |
| History of South Africa | 0 | - | 4.60 | 17,766 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,218 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,565 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,907 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,050 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,369 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,779 |
| First Ladies of the United States | 0 | - | 4.28 | 85,991 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,074 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,322 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,500 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,367 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,104 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,195 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,950 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,175 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,332 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,495 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,195 |
| Most Forested European Countries | 0 | - | 4.80 | 75,694 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,711 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,620 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,087 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,891 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,196 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,441 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,372 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,149 |
| History of France | 0 | - | 4.61 | 57,643 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,561 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,625 |
