| Name the English Monarchs | 0 | - | 4.92 | 499,847 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,263 |
| Name that Greek Letter | 0 | - | 4.93 | 322,429 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,722 |
| The Trojan War | 0 | - | 4.83 | 39,545 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,094 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,250 |
| Roman Emperors | 0 | - | 4.95 | 119,142 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,676 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,453 |
| Monarchies of Europe | 0 | - | 4.90 | 97,655 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,988 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,880 |
| German History A-Z | 0 | - | 4.49 | 24,500 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,268 |
| English Royal Consorts | 0 | - | 4.37 | 37,257 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,771 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,717 |
| British History A-Z #1 | 0 | - | 4.45 | 46,280 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,814 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,747 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,474 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,803 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,906 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,447 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,322 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,099 |
| States of Germany | 0 | - | 4.96 | 150,969 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,313 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,123 |
| Monarchies of Asia | 0 | - | 4.97 | 70,800 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,568 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,443 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,617 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,975 |
| Countries Bordering France | 0 | - | 4.83 | 400,961 |
| Germany Country Quiz | 0 | - | 4.82 | 157,104 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,066 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,211 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,528 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,613 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,768 |
| Roman Names for Places | 0 | - | 4.62 | 58,033 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,664 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,464 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,317 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,458 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,383 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,691 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,901 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,415 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,617 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,005 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,681 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,958 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,080 |
| Counties of Ireland | 0 | - | 4.92 | 193,904 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,616 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,834 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,610 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,165 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,311 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,797 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,893 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,371 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,014 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,981 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,844 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,382 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,281 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,837 |
| Kings of France Quiz | 0 | - | 4.20 | 32,619 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,711 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,451 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,104 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,133 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,117 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,926 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,632 |
| British Monopoly Board | 0 | - | 4.52 | 41,090 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,090 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,800 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,159 |
| Countries in World War I | 0 | - | 4.88 | 227,340 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,103 |
| French History A-Z | 0 | - | 4.22 | 24,347 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,108 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,014 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,516 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,073 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,031 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,890 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,133 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,867 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,804 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,641 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,045 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,213 |
| The Only European Country ... | 0 | - | 4.91 | 214,962 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,213 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| Germany A-Z | 0 | - | 4.56 | 62,441 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,786 |
| History of Germany | 0 | - | 4.39 | 52,707 |
| Ancient Greek Words | 0 | - | 4.93 | 111,053 |
| History of Italy | 0 | - | 4.55 | 31,889 |
| Italian History A-Z | 0 | - | 4.21 | 17,619 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,949 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,813 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,551 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,080 |
| Spanish History A-Z | 0 | - | 4.37 | 19,218 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,913 |
| Counties of England | 0 | - | 4.97 | 792,109 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,698 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,446 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,259 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,595 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,085 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,660 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,300 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,256 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,853 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,731 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,420 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,545 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,832 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,117 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,290 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,192 |
| European Countries with One Border | 0 | - | 4.97 | 182,060 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,924 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,638 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,669 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,495 |
| Slavic Countries | 0 | - | 4.96 | 111,190 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,099 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,490 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,689 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 66,970 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,066 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,310 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,741 |
| Regions of Italy | 0 | - | 4.92 | 75,125 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,069 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,096 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,675 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,136 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,290 |
| British Geography A-Z | 0 | - | 4.41 | 19,463 |
| Animals in British History | 0 | - | 4.44 | 25,926 |
| Champions League Winners | 0 | - | 4.92 | 1,000,233 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,601 |
| Countries in World War II | 0 | - | 4.54 | 907,964 |
| Battle to Country | 0 | - | 4.91 | 52,865 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,264 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,718 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,528 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,410 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,662 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,251 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,980 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,630 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,416 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,808 |
| Russia Country Quiz | 0 | - | 4.85 | 113,995 |
| Countries That Border Russia | 0 | - | 4.98 | 460,177 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,056 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,171 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,635 |
| Departments of France | 0 | - | 4.93 | 53,206 |
| Geography of the French Empire | 0 | - | 4.45 | 26,988 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| History of France | 0 | - | 4.59 | 56,551 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,500 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,859 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,831 |
| Italy Country Quiz | 0 | - | 4.82 | 122,616 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,768 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,403 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,423 |
| Byzantine History | 0 | - | 4.91 | 28,689 |
| The Vikings! | 0 | - | 4.46 | 28,281 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,614 |
| Finland Country Quiz | 0 | - | 4.50 | 59,335 |
| Norway Country Quiz | 0 | - | 4.44 | 76,931 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,967 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,360 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,987 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,212 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,772 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,066 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| Medieval English History | 0 | - | 4.53 | 43,385 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
