| Name the English Monarchs | 0 | - | 4.91 | 507,145 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,628 |
| Name that Greek Letter | 0 | - | 4.93 | 325,178 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,502 |
| The Trojan War | 0 | - | 4.83 | 40,035 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,113 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,658 |
| Roman Emperors | 0 | - | 4.95 | 121,361 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,993 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,003 |
| Monarchies of Europe | 0 | - | 4.90 | 98,994 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,774 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,118 |
| German History A-Z | 0 | - | 4.49 | 24,932 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,981 |
| English Royal Consorts | 0 | - | 4.38 | 37,545 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,441 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,622 |
| British History A-Z #1 | 0 | - | 4.45 | 47,301 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,196 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 36,017 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,510 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,869 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,944 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,969 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,690 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,937 |
| States of Germany | 0 | - | 4.95 | 154,834 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,772 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,697 |
| Monarchies of Asia | 0 | - | 4.97 | 71,581 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,015 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,907 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,180 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,145 |
| Countries Bordering France | 0 | - | 4.83 | 405,223 |
| Germany Country Quiz | 0 | - | 4.82 | 158,987 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,534 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,400 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,883 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,355 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,249 |
| Roman Names for Places | 0 | - | 4.62 | 58,769 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,890 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,133 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,124 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,571 |
| The Reign of Queen Victoria | 0 | - | 4.34 | 23,568 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,924 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,758 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,213 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,153 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,008 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,198 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,540 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,647 |
| Counties of Ireland | 0 | - | 4.92 | 197,571 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,333 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,574 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,763 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,308 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,969 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,524 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,566 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,116 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,373 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 407,733 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,250 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,799 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,767 |
| Kings of France Quiz | 0 | - | 4.21 | 32,957 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 39,019 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,570 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,593 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,251 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,272 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,248 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,956 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,411 |
| British Monopoly Board | 0 | - | 4.52 | 41,285 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,164 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,547 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,355 |
| Countries in World War I | 0 | - | 4.88 | 229,370 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,475 |
| French History A-Z | 0 | - | 4.27 | 25,173 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,203 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,192 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,276 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,327 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,344 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,100 |
| British History A-Z #2 | 0 | - | 4.28 | 11,978 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,825 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,696 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,111 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,496 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,779 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,408 |
| The Only European Country ... | 0 | - | 4.91 | 219,430 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,757 |
| History of Russia Quiz | 0 | - | 4.47 | 32,014 |
| Germany A-Z | 0 | - | 4.56 | 62,888 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,915 |
| History of Germany | 0 | - | 4.39 | 52,993 |
| Ancient Greek Words | 0 | - | 4.93 | 112,605 |
| History of Italy | 0 | - | 4.55 | 32,173 |
| Italian History A-Z | 0 | - | 4.16 | 17,949 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,211 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,573 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,840 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,459 |
| Spanish History A-Z | 0 | - | 4.37 | 19,528 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,903 |
| Counties of England | 0 | - | 4.97 | 803,860 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,128 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,836 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,354 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,072 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,723 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,487 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,945 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,142 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,670 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,873 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,768 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,860 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,225 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,064 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,316 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,579 |
| European Countries with One Border | 0 | - | 4.97 | 183,965 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,680 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,034 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,321 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,878 |
| Slavic Countries | 0 | - | 4.96 | 112,471 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,826 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,546 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,771 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,288 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,252 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,424 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,111 |
| Regions of Italy | 0 | - | 4.92 | 77,213 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,880 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,504 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,858 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,427 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,591 |
| British Geography A-Z | 0 | - | 4.42 | 19,626 |
| Animals in British History | 0 | - | 4.43 | 26,113 |
| Champions League Winners | 0 | - | 4.92 | 1,017,418 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,331 |
| Countries in World War II | 0 | - | 4.54 | 919,913 |
| Battle to Country | 0 | - | 4.91 | 54,074 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,922 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,140 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,979 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,908 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,212 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,167 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,056 |
| Russia Country Quiz | 0 | - | 4.83 | 115,403 |
| Countries That Border Russia | 0 | - | 4.98 | 464,768 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,810 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,618 |
| History of Austria | 0 | - | 4.70 | 17,989 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,977 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,937 |
| Departments of France | 0 | - | 4.93 | 55,333 |
| Geography of the French Empire | 0 | - | 4.45 | 27,227 |
| The French Revolution | 0 | - | 4.47 | 24,161 |
| History of France | 0 | - | 4.61 | 57,697 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,180 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,268 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,065 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,999 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,364 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,167 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,768 |
| Byzantine History | 0 | - | 4.91 | 29,037 |
| Byzantine Emperors | 0 | - | 4.93 | 14,646 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,314 |
| Finland Country Quiz | 0 | - | 4.51 | 60,065 |
| Norway Country Quiz | 0 | - | 4.45 | 77,885 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,425 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,583 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,994 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,753 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,975 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,482 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,344 |
| Geography of the British Empire | 0 | - | 4.48 | 39,862 |
| Medieval English History | 0 | - | 4.53 | 43,679 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,853 |
| England or Wales? | 0 | - | 4.94 | 46,005 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,375 |
