| Countries of the Soviet Union | 0 | - | 4.98 | 195,646 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,620 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,952 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,450 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,557 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,607 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,198 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,790 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,474 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,766 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,908 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,946 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,203 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,534 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,875 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,927 |
| Name the English Monarchs | 0 | - | 4.91 | 507,008 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,655 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,852 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,341 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,365 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,181 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,675 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,654 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,213 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,705 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,964 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,072 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,220 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,878 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,014 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,100 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,757 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,923 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,042 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,883 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,427 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,563 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,347 |
| The Only European Country ... | 0 | - | 4.91 | 219,334 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,698 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 84,126 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,468 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,189 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,563 |
| Counties of England | 0 | - | 4.97 | 803,625 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,120 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,896 |
| The American Revolution | 0 | - | 4.52 | 54,374 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,683 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,320 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,921 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,055 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,645 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,858 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,721 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,214 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,555 |
| Monarchies of Europe | 0 | - | 4.90 | 98,968 |
| European Countries with One Border | 0 | - | 4.97 | 183,934 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,646 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,625 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,283 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,838 |
| Slavic Countries | 0 | - | 4.96 | 112,448 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,527 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,742 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,916 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,642 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,489 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,644 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,577 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,158 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,478 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,323 |
| Geography of the British Empire | 0 | - | 4.48 | 39,861 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,882 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,070 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,027 |
| Countries of the Popes | 0 | - | 4.79 | 128,818 |
| The Vietnam War | 0 | - | 4.44 | 35,671 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,692 |
| Political Movements by Country | 0 | - | 4.46 | 72,796 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,164 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,152 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,131 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,605 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,869 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,885 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,998 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,885 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,385 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,883 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,782 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,009 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,015 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,628 |
| Countries that Border Poland | 0 | - | 4.99 | 173,268 |
| Russia Country Quiz | 0 | - | 4.83 | 115,382 |
| Countries That Border Russia | 0 | - | 4.98 | 464,698 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,316 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,064 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,797 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,049 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,612 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,152 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,969 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,990 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,904 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,190 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,528 |
| Countries Bordering France | 0 | - | 4.83 | 405,137 |
| Germany Country Quiz | 0 | - | 4.82 | 158,953 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,151 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,050 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,888 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,448 |
| Name that Greek Letter | 0 | - | 4.93 | 325,133 |
| Counties of Ireland | 0 | - | 4.92 | 197,478 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,330 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,138 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,312 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,514 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,550 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,962 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,021 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,323 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,255 |
| UK Immigration by Country | 0 | - | 4.94 | 141,820 |
| Arthurian Legend | 0 | - | 4.33 | 25,182 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,148 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,943 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,527 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,991 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,991 |
| Medieval English History | 0 | - | 4.53 | 43,671 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,340 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,100 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,106 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,353 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,527 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,069 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,556 |
| The Iraq War | 0 | - | 4.47 | 15,710 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,630 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,158 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,085 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,427 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,061 |
| Arms Exports - United States | 0 | - | 4.77 | 62,770 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,610 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,406 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,704 |
| Presidential Middle Names | 0 | - | 4.42 | 60,773 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,720 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,922 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,644 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,353 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,779 |
| Random European Flag to Country | 0 | - | 4.90 | 184,349 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,542 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,669 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,686 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,855 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,073 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,045 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,893 |
| Germany A-Z | 0 | - | 4.56 | 62,882 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,420 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,090 |
| The Trojan War | 0 | - | 4.83 | 40,023 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,077 |
| Italy A-Z | 0 | - | 4.49 | 58,801 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,583 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,238 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,644 |
| Roman Emperors | 0 | - | 4.95 | 121,325 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,221 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,263 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,937 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,395 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,145 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,038 |
| Monty Python Quotes | 0 | - | 4.89 | 42,618 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,828 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,831 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,391 |
| British History A-Z #1 | 0 | - | 4.45 | 47,295 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,124 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,105 |
| History of Scotland | 0 | - | 4.51 | 21,181 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,813 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,623 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 872,316 |
| Scotland A-Z | 0 | - | 4.73 | 41,479 |
| Malta Country Quiz | 0 | - | 4.81 | 31,247 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,247 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,547 |
