| Name the English Monarchs | 0 | - | 4.91 | 505,395 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,340 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,707 |
| Name that Greek Letter | 0 | - | 4.93 | 324,668 |
| The Trojan War | 0 | - | 4.83 | 39,931 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,676 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,482 |
| Roman Emperors | 0 | - | 4.95 | 120,889 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,331 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,128 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,089 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,094 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,435 |
| German History A-Z | 0 | - | 4.49 | 24,858 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,086 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,684 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,490 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,623 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,382 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,548 |
| States of Germany | 0 | - | 4.95 | 153,996 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,536 |
| Countries Bordering France | 0 | - | 4.83 | 404,351 |
| Germany Country Quiz | 0 | - | 4.83 | 158,567 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,147 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,788 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,063 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,153 |
| Roman Names for Places | 0 | - | 4.62 | 58,608 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,907 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,877 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,700 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,835 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,070 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,386 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,087 |
| Counties of Ireland | 0 | - | 4.92 | 196,837 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,164 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,059 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,804 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,964 |
| British History A-Z #1 | 0 | - | 4.45 | 47,077 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,994 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,925 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,954 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,180 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,179 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,577 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,553 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,027 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,237 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,956 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,728 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,229 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,932 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,038 |
| English Royal Consorts | 0 | - | 4.38 | 37,484 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,887 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,713 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,941 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,982 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,560 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,156 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,144 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,284 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,274 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,052 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 142,776 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,275 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,799 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,773 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,736 |
| The Only European Country ... | 0 | - | 4.91 | 218,353 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,157 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Ancient Greek Words | 0 | - | 4.93 | 112,241 |
| History of Italy | 0 | - | 4.55 | 32,108 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,782 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,380 |
| Counties of England | 0 | - | 4.97 | 801,271 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,039 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,943 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,106 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,285 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,836 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,219 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,610 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,204 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,951 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,945 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,641 |
| Slavic Countries | 0 | - | 4.96 | 112,188 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,209 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,507 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,211 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,394 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,061 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,413 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,832 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,551 |
| Champions League Winners | 0 | - | 4.92 | 1,013,207 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,561 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,619 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,565 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,324 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,233 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,206 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,281 |
| Monarchies of Europe | 0 | - | 4.90 | 98,647 |
| European Countries with One Border | 0 | - | 4.97 | 183,506 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,246 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,130 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,446 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,273 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,430 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,730 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,607 |
| Russia Country Quiz | 0 | - | 4.83 | 115,141 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,918 |
| Countries That Border Russia | 0 | - | 4.98 | 463,904 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,620 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,326 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,505 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,874 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,362 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,514 |
| Departments of France | 0 | - | 4.93 | 54,856 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| The French Revolution | 0 | - | 4.47 | 24,110 |
| History of France | 0 | - | 4.61 | 57,465 |
| French History A-Z | 0 | - | 4.27 | 25,031 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,900 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,922 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,369 |
| Regions of Italy | 0 | - | 4.92 | 76,693 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,021 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,873 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,703 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,650 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,322 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,010 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,586 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,609 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,380 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,463 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,436 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,113 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| British History A-Z #2 | 0 | - | 4.24 | 10,897 |
| The Reign of Queen Victoria | 0 | - | 4.34 | 23,524 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| England or Wales? | 0 | - | 4.94 | 45,895 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,633 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,334 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,855 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,844 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,570 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,286 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,628 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,786 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,799 |
| Countries that Border Poland | 0 | - | 4.99 | 172,947 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,133 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,290 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,890 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,916 |
| Countries that Beat France | 0 | - | 4.48 | 76,216 |
| France True or False? | 0 | - | 4.44 | 40,033 |
| French History Multiple Choice | 0 | - | 4.55 | 33,178 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,888 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,408 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,173 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,003 |
| Italian History A-Z | 0 | - | 4.16 | 17,879 |
| Byzantine History | 0 | - | 4.91 | 28,988 |
| Byzantine Emperors | 0 | - | 4.92 | 14,503 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,557 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,179 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,477 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 53,166 |
| Finland Country Quiz | 0 | - | 4.51 | 59,910 |
| Norway Country Quiz | 0 | - | 4.45 | 77,682 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,333 |
| Spanish History A-Z | 0 | - | 4.37 | 19,465 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,625 |
| Arthurian Legend | 0 | - | 4.33 | 25,156 |
| British Monopoly Board | 0 | - | 4.52 | 41,237 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,659 |
| British Geography Quiz #1 | 0 | - | 4.55 | 54,068 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,014 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,378 |
