| Name the English Monarchs | 0 | - | 4.91 | 503,782 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,173 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,690 |
| Name that Greek Letter | 0 | - | 4.93 | 324,120 |
| The Trojan War | 0 | - | 4.83 | 39,792 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,197 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,640 |
| Roman Emperors | 0 | - | 4.95 | 120,359 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,570 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,456 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,274 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,556 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,702 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,175 |
| German History A-Z | 0 | - | 4.49 | 24,654 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,698 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,211 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,046 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,287 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,109 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,120 |
| States of Germany | 0 | - | 4.95 | 153,096 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,255 |
| Countries Bordering France | 0 | - | 4.83 | 403,454 |
| Germany Country Quiz | 0 | - | 4.83 | 158,141 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,863 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,703 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,785 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,986 |
| Roman Names for Places | 0 | - | 4.62 | 58,389 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,838 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,753 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,846 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,565 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,845 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,642 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,955 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,269 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,018 |
| Counties of Ireland | 0 | - | 4.92 | 195,943 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,010 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,306 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,318 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,211 |
| British History A-Z #1 | 0 | - | 4.45 | 46,570 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,792 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,732 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,781 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,979 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,930 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,348 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,518 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,629 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,202 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,721 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,494 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,050 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,711 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,652 |
| English Royal Consorts | 0 | - | 4.38 | 37,404 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,594 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,969 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,853 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,751 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,404 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,120 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,975 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,215 |
| Medieval English History | 0 | - | 4.53 | 43,565 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,200 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,997 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 141,902 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,503 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,994 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,484 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,634 |
| The Only European Country ... | 0 | - | 4.91 | 217,317 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,525 |
| History of Russia Quiz | 0 | - | 4.47 | 31,945 |
| History of Germany | 0 | - | 4.39 | 52,889 |
| Ancient Greek Words | 0 | - | 4.93 | 111,875 |
| History of Italy | 0 | - | 4.55 | 32,047 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,716 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,292 |
| Counties of England | 0 | - | 4.97 | 798,619 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,947 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,872 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,948 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,892 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,405 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,299 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,337 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,146 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,795 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,530 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,370 |
| Slavic Countries | 0 | - | 4.96 | 111,861 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,124 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,503 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,373 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,169 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,369 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,873 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,265 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,790 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,526 |
| Champions League Winners | 0 | - | 4.91 | 1,009,514 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,063 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,284 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,222 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,025 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,813 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,657 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,964 |
| Monarchies of Europe | 0 | - | 4.90 | 98,325 |
| European Countries with One Border | 0 | - | 4.97 | 183,089 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,865 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,836 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,312 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 85,180 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,566 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,896 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,997 |
| Russia Country Quiz | 0 | - | 4.83 | 114,675 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,933 |
| Countries That Border Russia | 0 | - | 4.98 | 462,739 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,455 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,073 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,408 |
| History of Austria | 0 | - | 4.70 | 17,900 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,757 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,767 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,093 |
| Departments of France | 0 | - | 4.93 | 54,413 |
| Geography of the French Empire | 0 | - | 4.45 | 27,152 |
| The French Revolution | 0 | - | 4.47 | 24,054 |
| History of France | 0 | - | 4.59 | 57,250 |
| French History A-Z | 0 | - | 4.27 | 24,751 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,586 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,836 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,650 |
| Regions of Italy | 0 | - | 4.92 | 76,202 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,625 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,281 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,609 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,399 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,093 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,335 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,158 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,382 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,131 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,944 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,398 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,643 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Animals in British History | 0 | - | 4.43 | 26,038 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,478 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,741 |
| England or Wales? | 0 | - | 4.94 | 45,785 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,941 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,737 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,707,053 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,042 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,176 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,499 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,604 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,334 |
| Countries that Border Poland | 0 | - | 4.99 | 172,573 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,964 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,421 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,398 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,640 |
| Countries that Beat France | 0 | - | 4.49 | 76,006 |
| France True or False? | 0 | - | 4.44 | 39,977 |
| French History Multiple Choice | 0 | - | 4.55 | 33,116 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,856 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,052 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,066 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,945 |
| Italian History A-Z | 0 | - | 4.21 | 17,736 |
| Byzantine History | 0 | - | 4.91 | 28,910 |
| Byzantine Emperors | 0 | - | 4.92 | 14,349 |
| History of The Netherlands | 0 | - | 4.46 | 17,476 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,396 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,010 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,409 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 53,117 |
| Finland Country Quiz | 0 | - | 4.50 | 59,772 |
| Norway Country Quiz | 0 | - | 4.44 | 77,480 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,228 |
| Spanish History A-Z | 0 | - | 4.37 | 19,322 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,519 |
| Arthurian Legend | 0 | - | 4.33 | 25,130 |
| British Monopoly Board | 0 | - | 4.52 | 41,191 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,343 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,403 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,954 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,937 |
