| Name the English Monarchs | 0 | - | 4.92 | 498,755 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,912 |
| Name that Greek Letter | 0 | - | 4.94 | 321,960 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,763 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,133 |
| Roman Emperors | 0 | - | 4.95 | 118,676 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,402 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,617 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,579 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,722 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,755 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,542 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,566 |
| German History A-Z | 0 | - | 4.49 | 24,451 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,128 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,587 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,608 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,252 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,162 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,896 |
| States of Germany | 0 | - | 4.96 | 150,476 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,142 |
| Countries Bordering France | 0 | - | 4.83 | 400,230 |
| Germany Country Quiz | 0 | - | 4.82 | 156,784 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,012 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,481 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,571 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,728 |
| Roman Names for Places | 0 | - | 4.62 | 57,932 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,637 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,367 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,344 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,201 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,554 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,868 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,594 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,875 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,751 |
| Counties of Ireland | 0 | - | 4.92 | 193,409 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,526 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,527 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,840 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,626 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,954 |
| British History A-Z #1 | 0 | - | 4.45 | 46,170 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,401 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,207 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,865 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,859 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,679 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,690 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,435 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,974 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,955 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,776 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,542 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,930 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,553 |
| English Royal Consorts | 0 | - | 4.37 | 37,219 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,858 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,652 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,675 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,119 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,035 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,982 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,411 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,051 |
| Medieval English History | 0 | - | 4.53 | 43,347 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,986 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,859 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,431 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,337 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,444 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,206 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,832 |
| The Only European Country ... | 0 | - | 4.91 | 214,304 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,830 |
| History of Russia Quiz | 0 | - | 4.49 | 31,807 |
| History of Germany | 0 | - | 4.39 | 52,661 |
| Ancient Greek Words | 0 | - | 4.92 | 110,853 |
| History of Italy | 0 | - | 4.55 | 31,854 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,504 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| Counties of England | 0 | - | 4.97 | 790,344 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,618 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,708 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,818 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,851 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,441 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,707 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,584 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,227 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,560 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,427 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,328 |
| Slavic Countries | 0 | - | 4.96 | 110,994 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 66,939 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,997 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,015 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,297 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,163 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,686 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,634 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,439 |
| Champions League Winners | 0 | - | 4.92 | 997,837 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,061 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,473 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,364 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,243 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,148 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,571 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,080 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,948 |
| Monarchies of Europe | 0 | - | 4.90 | 97,468 |
| European Countries with One Border | 0 | - | 4.97 | 181,794 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,909 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,526 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,433 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,450 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,415 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,452 |
| Russia Country Quiz | 0 | - | 4.85 | 113,784 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,503 |
| Countries That Border Russia | 0 | - | 4.98 | 459,544 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,946 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,311 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,097 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,394 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,391 |
| Departments of France | 0 | - | 4.93 | 52,994 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,815 |
| History of France | 0 | - | 4.59 | 56,279 |
| French History A-Z | 0 | - | 4.22 | 23,938 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,321 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,291 |
| Regions of Italy | 0 | - | 4.92 | 74,900 |
| Italy Country Quiz | 0 | - | 4.82 | 122,394 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,565 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,247 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,941 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,200 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,587 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,787 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,462 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,150 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,527 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,223 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,928 |
| Geography of the British Empire | 0 | - | 4.48 | 39,525 |
| Animals in British History | 0 | - | 4.44 | 25,894 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,360 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,572 |
| England or Wales? | 0 | - | 4.94 | 45,390 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,738 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,328 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,661,442 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,430 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,836 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,934 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,932 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,129 |
| Countries that Border Poland | 0 | - | 4.99 | 171,512 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,446 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,882 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,781 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,863 |
| Countries that Beat France | 0 | - | 4.49 | 75,264 |
| France True or False? | 0 | - | 4.43 | 39,809 |
| French History Multiple Choice | 0 | - | 4.55 | 32,898 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,762 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,657 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,811 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,799 |
| Italian History A-Z | 0 | - | 4.21 | 17,573 |
| Byzantine History | 0 | - | 4.91 | 28,657 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,188 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,510 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,166 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 52,960 |
| Finland Country Quiz | 0 | - | 4.50 | 59,208 |
| Norway Country Quiz | 0 | - | 4.44 | 76,762 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,912 |
| Spanish History A-Z | 0 | - | 4.37 | 19,181 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,128 |
| Arthurian Legend | 0 | - | 4.33 | 25,058 |
| British Monopoly Board | 0 | - | 4.52 | 41,067 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,428 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,192 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,714 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,314 |
