| Name the English Monarchs | 0 | - | 4.92 | 499,368 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,687 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,673 |
| Name that Greek Letter | 0 | - | 4.94 | 322,222 |
| The Trojan War | 0 | - | 4.83 | 39,518 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,970 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,195 |
| Roman Emperors | 0 | - | 4.95 | 118,981 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,678 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,866 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,052 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,938 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,698 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,633 |
| German History A-Z | 0 | - | 4.49 | 24,488 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,318 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,712 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,796 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,369 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,259 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,034 |
| States of Germany | 0 | - | 4.96 | 150,772 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,249 |
| Countries Bordering France | 0 | - | 4.83 | 400,728 |
| Germany Country Quiz | 0 | - | 4.82 | 156,971 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,132 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,509 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,595 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,745 |
| Roman Names for Places | 0 | - | 4.62 | 57,992 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,660 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,402 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,971 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,256 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,598 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,951 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,646 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,933 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,793 |
| Counties of Ireland | 0 | - | 4.92 | 193,728 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,587 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,736 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,038 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,721 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,211 |
| British History A-Z #1 | 0 | - | 4.45 | 46,241 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,439 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,272 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,967 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,934 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,071 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,758 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,445 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,051 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,126 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,055 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,867 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,606 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,020 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,710 |
| English Royal Consorts | 0 | - | 4.37 | 37,240 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,446 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,933 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,697 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,683 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,089 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,001 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,470 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| Medieval English History | 0 | - | 4.53 | 43,364 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,015 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,876 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,713 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,624 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,232,022 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,220 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,077 |
| The Only European Country ... | 0 | - | 4.91 | 214,730 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,059 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| History of Germany | 0 | - | 4.39 | 52,689 |
| Ancient Greek Words | 0 | - | 4.93 | 110,979 |
| History of Italy | 0 | - | 4.55 | 31,873 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,536 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,056 |
| Counties of England | 0 | - | 4.97 | 791,494 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,668 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,732 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,715 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,992 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,574 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,033 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,659 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,933 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,008 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,577 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,399 |
| Slavic Countries | 0 | - | 4.96 | 111,106 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 66,961 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,050 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,056 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,305 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,648 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,760 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,650 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,448 |
| Champions League Winners | 0 | - | 4.92 | 999,313 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,180 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,541 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,480 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,364 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,237 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,736 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,284 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,103 |
| Monarchies of Europe | 0 | - | 4.90 | 97,568 |
| European Countries with One Border | 0 | - | 4.97 | 181,957 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,842 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,333 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,839 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,561 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,768 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,012 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,671 |
| Russia Country Quiz | 0 | - | 4.85 | 113,905 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,893 |
| Countries That Border Russia | 0 | - | 4.98 | 459,940 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,003 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,410 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,138 |
| History of Austria | 0 | - | 4.70 | 17,783 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,582 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,544 |
| Departments of France | 0 | - | 4.93 | 53,126 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| History of France | 0 | - | 4.59 | 56,457 |
| French History A-Z | 0 | - | 4.22 | 24,240 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,436 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,559 |
| Regions of Italy | 0 | - | 4.92 | 75,023 |
| Italy Country Quiz | 0 | - | 4.82 | 122,539 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,701 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,345 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,412 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,019 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,013 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,295 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,925 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,905 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,611 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,238 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,662 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,246 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,008 |
| Geography of the British Empire | 0 | - | 4.48 | 39,552 |
| Animals in British History | 0 | - | 4.44 | 25,913 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,374 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,592 |
| England or Wales? | 0 | - | 4.94 | 45,443 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,989 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,377 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,667,828 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,595 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,879 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,024 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,032 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,294 |
| Countries that Border Poland | 0 | - | 4.99 | 171,647 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,506 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,197 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,861 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,964 |
| Countries that Beat France | 0 | - | 4.49 | 75,347 |
| France True or False? | 0 | - | 4.43 | 39,831 |
| French History Multiple Choice | 0 | - | 4.55 | 32,920 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,773 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,705 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,841 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,818 |
| Italian History A-Z | 0 | - | 4.21 | 17,607 |
| Byzantine History | 0 | - | 4.91 | 28,671 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,217 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,566 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,185 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 52,991 |
| Finland Country Quiz | 0 | - | 4.50 | 59,296 |
| Norway Country Quiz | 0 | - | 4.44 | 76,870 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,944 |
| Spanish History A-Z | 0 | - | 4.37 | 19,209 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,180 |
| Arthurian Legend | 0 | - | 4.33 | 25,065 |
| British Monopoly Board | 0 | - | 4.52 | 41,082 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,547 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,219 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,746 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,018 |
