| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,743 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,175 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,848 |
| Counties of England | 0 | - | 4.97 | 792,557 |
| History of Italy | 0 | - | 4.55 | 31,897 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,567 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,716 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,884 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,537 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,863 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,957 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,490 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,379 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,773 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,146 |
| States of Germany | 0 | - | 4.96 | 151,079 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,495 |
| Regions of Italy | 0 | - | 4.92 | 75,205 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 47,997 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,727 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,346 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,618 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,294 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,045 |
| History of Spain | 0 | - | 4.29 | 21,044 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,559 |
| History of Austria | 0 | - | 4.70 | 17,800 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,862 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| The Vikings! | 0 | - | 4.46 | 28,286 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Name the English Monarchs | 0 | - | 4.92 | 500,116 |
| History of France | 0 | - | 4.59 | 56,625 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,228 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,264 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,095 |
| Geography of the British Empire | 0 | - | 4.48 | 39,584 |
| Malta Country Quiz | 0 | - | 4.81 | 30,937 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,933 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,226 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,310 |
| The Only European Country ... | 0 | - | 4.91 | 215,140 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,321 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,618 |
| Name that Greek Letter | 0 | - | 4.93 | 322,543 |
| History of The Netherlands | 0 | - | 4.46 | 17,360 |
| Canary Islands | 0 | - | 4.61 | 17,438 |
| History of Russia Quiz | 0 | - | 4.49 | 31,844 |
| The Trojan War | 0 | - | 4.83 | 39,567 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,165 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,287 |
| Roman Emperors | 0 | - | 4.95 | 119,241 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,660 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,154 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,626 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,484 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,155 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,699 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,435 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,758 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,304 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,465 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,738 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,524 |
| Slavic Countries | 0 | - | 4.96 | 111,256 |
| French History Multiple Choice | 0 | - | 4.55 | 32,946 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,196 |
| History of Germany | 0 | - | 4.39 | 52,724 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,074 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,083 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,725 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,112 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,498 |
| Regions of France | 0 | - | 4.77 | 119,965 |
| France Immigration by Country | 0 | - | 4.72 | 76,197 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,727 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,418 |
| Ancient Greek Words | 0 | - | 4.93 | 111,099 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,060 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,945 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,155 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,827 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,505 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,619 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,407 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,917 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,498 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,235 |
| Monarchies of Europe | 0 | - | 4.90 | 97,700 |
| European Countries with One Border | 0 | - | 4.97 | 182,117 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,982 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,686 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,309 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,535 |
| French Inventions | 0 | - | 4.08 | 13,876 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,157 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,067 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,835 |
| Spain Country Quiz | 0 | - | 4.45 | 128,044 |
| American to British Word Translation | 0 | - | 4.13 | 138,282 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,813 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,664 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,259 |
| Champions League Winners | 0 | - | 4.92 | 1,000,687 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,310 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,637 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,491 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,776 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,721 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,079 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,711 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,906 |
| Russia Country Quiz | 0 | - | 4.85 | 114,043 |
| Countries That Border Russia | 0 | - | 4.98 | 460,336 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,092 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,190 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,702 |
| Departments of France | 0 | - | 4.93 | 53,300 |
| Countries Bordering France | 0 | - | 4.83 | 401,124 |
| Germany Country Quiz | 0 | - | 4.82 | 157,183 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,559 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,006 |
| Italy Country Quiz | 0 | - | 4.82 | 122,673 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,824 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,460 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,438 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,144 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,420 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,861 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,131 |
| England or Wales? | 0 | - | 4.94 | 45,489 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,246 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,774 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,834 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,992 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,870 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,842 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,851 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,147 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,230 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,409 |
| British Spellings | 0 | - | 4.06 | 99,356 |
| British Groups of Things | 0 | - | 4.25 | 82,778 |
| British Acronyms | 0 | - | 4.39 | 45,702 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,994 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,809 |
| Geography of Scotland | 0 | - | 4.63 | 21,547 |
| Medieval English History | 0 | - | 4.53 | 43,403 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,990 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,785 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,932 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,095 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,128 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,479 |
| Countries that Border Poland | 0 | - | 4.99 | 171,782 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,566 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,537 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,930 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,724 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,668 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,062 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,633 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,532 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,026 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,698 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,974 |
| Geography of Germany | 0 | - | 4.35 | 17,137 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,408 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,251 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,539 |
| Counties of Ireland | 0 | - | 4.92 | 194,029 |
| Italian Inventions | 0 | - | 3.81 | 18,424 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,634 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,899 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,628 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,788 |
| Roman Names for Places | 0 | - | 4.62 | 58,056 |
| Byzantine History | 0 | - | 4.91 | 28,703 |
| Spanish History A-Z | 0 | - | 4.37 | 19,224 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,740 |
| British to American Word Translation | 0 | - | 3.74 | 254,906 |
| British Foods by Description | 0 | - | 3.94 | 48,293 |
| British and American Word Differences | 0 | - | 2.63 | 46,826 |
| English Inventions #1 | 0 | - | 3.15 | 23,536 |
| English Inventions #2 | 0 | - | 4.00 | 8,682 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,547 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,486 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,685 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,468 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,049 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,895 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,641 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,054 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,006 |
| Bridges of London | 0 | - | 4.17 | 10,079 |
| British Sport Trivia | 0 | - | 4.37 | 20,408 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,081 |
