| Name the English Monarchs | 0 | - | 4.91 | 503,956 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,892 |
| Name that Greek Letter | 0 | - | 4.93 | 324,166 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,195 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,247 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,653 |
| Roman Emperors | 0 | - | 4.95 | 120,395 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,844 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,773 |
| Monarchies of Europe | 0 | - | 4.90 | 98,354 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,509 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,688 |
| German History A-Z | 0 | - | 4.49 | 24,664 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,369 |
| English Royal Consorts | 0 | - | 4.38 | 37,411 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,737 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,204 |
| British History A-Z #1 | 0 | - | 4.45 | 46,583 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,025 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,882 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,753 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,435 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,103 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,324 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,141 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,177 |
| States of Germany | 0 | - | 4.95 | 153,193 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,284 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,418 |
| Monarchies of Asia | 0 | - | 4.97 | 71,225 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,354 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,262 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,922 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,633 |
| Countries Bordering France | 0 | - | 4.83 | 403,562 |
| Germany Country Quiz | 0 | - | 4.83 | 158,179 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,600 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,896 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,711 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,792 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,992 |
| Roman Names for Places | 0 | - | 4.62 | 58,399 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,799 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,809 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,749 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,531 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,481 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,075 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,234 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,374 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,854 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,664 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,966 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,285 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,384 |
| Counties of Ireland | 0 | - | 4.92 | 196,058 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,022 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,357 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,298 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,364 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,065 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,511 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,350 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,270 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,801 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,007 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,751 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,060 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,585 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,361 |
| Kings of France Quiz | 0 | - | 4.20 | 32,817 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,866 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,520 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,652 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,203 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,741 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,513 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,065 |
| British Monopoly Board | 0 | - | 4.52 | 41,194 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,735 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,689 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,377 |
| Countries in World War I | 0 | - | 4.88 | 228,476 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,045 |
| French History A-Z | 0 | - | 4.27 | 24,763 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,899 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,122 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,987 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,208 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,002 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,489 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,010 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,577 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,611 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,761 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,684 |
| The Only European Country ... | 0 | - | 4.91 | 217,399 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,584 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Germany A-Z | 0 | - | 4.56 | 62,698 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,859 |
| History of Germany | 0 | - | 4.39 | 52,898 |
| Ancient Greek Words | 0 | - | 4.93 | 111,912 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Italian History A-Z | 0 | - | 4.21 | 17,739 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,018 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,278 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,720 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Spanish History A-Z | 0 | - | 4.37 | 19,323 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,420 |
| Counties of England | 0 | - | 4.97 | 798,899 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,957 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,719 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,187 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,929 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,438 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,046 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,382 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,852 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,359 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,708 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,389 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,053 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,231 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,060 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,989 |
| European Countries with One Border | 0 | - | 4.97 | 183,124 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,896 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,541 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,561 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,403 |
| Slavic Countries | 0 | - | 4.96 | 111,882 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,004 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,094 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,849 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,130 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,507 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,177 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,371 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,724 |
| Regions of Italy | 0 | - | 4.92 | 76,235 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,428 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,411 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,415 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,339 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,154 |
| British Geography A-Z | 0 | - | 4.42 | 19,559 |
| Animals in British History | 0 | - | 4.43 | 26,042 |
| Champions League Winners | 0 | - | 4.92 | 1,009,898 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,023 |
| Countries in World War II | 0 | - | 4.54 | 914,817 |
| Battle to Country | 0 | - | 4.91 | 53,532 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,089 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,818 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,604 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,384 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,938 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,645 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,808 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,383 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,051 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,036 |
| Russia Country Quiz | 0 | - | 4.83 | 114,697 |
| Countries That Border Russia | 0 | - | 4.98 | 462,834 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,469 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,414 |
| History of Austria | 0 | - | 4.70 | 17,905 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,778 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,162 |
| Departments of France | 0 | - | 4.93 | 54,467 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| History of France | 0 | - | 4.59 | 57,275 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,628 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,074 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,839 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,661 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,569 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,614 |
| Byzantine History | 0 | - | 4.91 | 28,919 |
| Byzantine Emperors | 0 | - | 4.92 | 14,366 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,027 |
| Finland Country Quiz | 0 | - | 4.50 | 59,786 |
| Norway Country Quiz | 0 | - | 4.44 | 77,499 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,243 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,119 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,215 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,525 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,983 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,405 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,671 |
| Geography of the British Empire | 0 | - | 4.48 | 39,734 |
| Medieval English History | 0 | - | 4.53 | 43,571 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,754 |
