| Name the English Monarchs | 0 | - | 4.91 | 501,039 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,851 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,661 |
| Name that Greek Letter | 0 | - | 4.93 | 322,929 |
| The Trojan War | 0 | - | 4.83 | 39,624 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,432 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,378 |
| Roman Emperors | 0 | - | 4.95 | 119,570 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,437 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,375 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,879 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,403 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,035 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,868 |
| German History A-Z | 0 | - | 4.49 | 24,557 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,774 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,049 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,193 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,635 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,535 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,455 |
| States of Germany | 0 | - | 4.96 | 151,655 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,810 |
| Countries Bordering France | 0 | - | 4.83 | 401,650 |
| Germany Country Quiz | 0 | - | 4.82 | 157,458 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,400 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,588 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,674 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,838 |
| Roman Names for Places | 0 | - | 4.62 | 58,140 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,724 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,543 |
| Europe Map Quiz | 0 | - | 5.00 | 4,752,512 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,366 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,696 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,138 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,768 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,057 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,878 |
| Counties of Ireland | 0 | - | 4.92 | 194,427 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,722 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,598 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,498 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,022 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,931 |
| British History A-Z #1 | 0 | - | 4.45 | 46,366 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,554 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,424 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,175 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,637 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,193 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,002 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,453 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,469 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,262 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,159 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,319 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,079 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,748 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,302 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,074 |
| English Royal Consorts | 0 | - | 4.37 | 37,300 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,927 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,749 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,747 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,250 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,227 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,051 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,627 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,102 |
| Medieval English History | 0 | - | 4.53 | 43,439 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,082 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,917 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 140,394 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,340 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,238,422 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,321 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,653 |
| The Only European Country ... | 0 | - | 4.91 | 215,749 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,614 |
| History of Russia Quiz | 0 | - | 4.49 | 31,871 |
| History of Germany | 0 | - | 4.39 | 52,763 |
| Ancient Greek Words | 0 | - | 4.93 | 111,262 |
| History of Italy | 0 | - | 4.55 | 31,927 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,601 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,149 |
| Counties of England | 0 | - | 4.97 | 794,064 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,776 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,796 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,730 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,336 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,882 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,928 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,919 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,801 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,141 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,903 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,638 |
| Slavic Countries | 0 | - | 4.96 | 111,408 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,007 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,193 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,108 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,328 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,812 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,962 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,704 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,479 |
| Champions League Winners | 0 | - | 4.92 | 1,002,945 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,528 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,794 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,696 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,607 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,159 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,788 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,418 |
| Monarchies of Europe | 0 | - | 4.90 | 97,869 |
| European Countries with One Border | 0 | - | 4.97 | 182,398 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,226 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,360 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,104 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,606 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,497 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,591 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,201 |
| Russia Country Quiz | 0 | - | 4.85 | 114,192 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,016 |
| Countries That Border Russia | 0 | - | 4.98 | 460,874 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,193 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,659 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,266 |
| History of Austria | 0 | - | 4.70 | 17,826 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,027 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,308 |
| Departments of France | 0 | - | 4.93 | 53,646 |
| Geography of the French Empire | 0 | - | 4.45 | 27,015 |
| The French Revolution | 0 | - | 4.46 | 23,889 |
| History of France | 0 | - | 4.59 | 56,763 |
| French History A-Z | 0 | - | 4.23 | 24,508 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,800 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,268 |
| Regions of Italy | 0 | - | 4.92 | 75,450 |
| Italy Country Quiz | 0 | - | 4.82 | 122,947 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,009 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,715 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,498 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,606 |
| The Vikings! | 0 | - | 4.46 | 28,308 |
| The Portuguese Empire | 0 | - | 4.58 | 12,043 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,589 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,520 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,266 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,933 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,486 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,119 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,295 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,241 |
| Geography of the British Empire | 0 | - | 4.48 | 39,620 |
| Animals in British History | 0 | - | 4.44 | 25,965 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,406 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,653 |
| England or Wales? | 0 | - | 4.94 | 45,565 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,590 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,524 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,684,386 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,389 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,009 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,240 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,287 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,672 |
| Countries that Border Poland | 0 | - | 4.99 | 171,972 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,673 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,009 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,043 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,192 |
| Countries that Beat France | 0 | - | 4.49 | 75,570 |
| France True or False? | 0 | - | 4.43 | 39,891 |
| French History Multiple Choice | 0 | - | 4.55 | 32,989 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,811 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,831 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,912 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,866 |
| Italian History A-Z | 0 | - | 4.21 | 17,650 |
| Byzantine History | 0 | - | 4.91 | 28,741 |
| History of The Netherlands | 0 | - | 4.46 | 17,397 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,275 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,755 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,288 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 53,042 |
| Finland Country Quiz | 0 | - | 4.50 | 59,474 |
| Norway Country Quiz | 0 | - | 4.44 | 77,125 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,049 |
| Spanish History A-Z | 0 | - | 4.37 | 19,249 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,303 |
| Arthurian Legend | 0 | - | 4.33 | 25,090 |
| British Monopoly Board | 0 | - | 4.52 | 41,130 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 74,831 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,292 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,836 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,388 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,177 |
