| Name the English Monarchs | 0 | - | 4.92 | 499,877 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,170 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,298 |
| Name that Greek Letter | 0 | - | 4.93 | 322,452 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,105 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,256 |
| Roman Emperors | 0 | - | 4.95 | 119,151 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,636 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,726 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,995 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,124 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Monarchies of Europe | 0 | - | 4.90 | 97,662 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,480 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,811 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,912 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,450 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,327 |
| Countries Bordering France | 0 | - | 4.83 | 400,986 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,900 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,107 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,073 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,920 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,677 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,454 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,111 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,575 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,448 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,634 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,984 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,001 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,700 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,284 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,420 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,620 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,007 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,682 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,960 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,284 |
| Counties of Ireland | 0 | - | 4.92 | 193,926 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,618 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,841 |
| Spanish History A-Z | 0 | - | 4.37 | 19,220 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,386 |
| British History A-Z #1 | 0 | - | 4.45 | 46,281 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,017 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,988 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,389 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,842 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,819 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,781 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,720 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,106 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,122 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,931 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,213 |
| British Monopoly Board | 0 | - | 4.52 | 41,091 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,092 |
| English Royal Consorts | 0 | - | 4.37 | 37,259 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,882 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,810 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,114 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,222 |
| The Only European Country ... | 0 | - | 4.91 | 214,978 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,228 |
| German History A-Z | 0 | - | 4.49 | 24,502 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,148 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,521 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,135 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,876 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,728 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,113 |
| History of Russia Quiz | 0 | - | 4.49 | 31,836 |
| Ancient Greek Words | 0 | - | 4.93 | 111,057 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,215 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,530 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Italian History A-Z | 0 | - | 4.21 | 17,620 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,615 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,771 |
| Roman Names for Places | 0 | - | 4.62 | 58,038 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,553 |
| Counties of England | 0 | - | 4.97 | 792,141 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,700 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,465 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,323 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,748 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,285 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,094 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,666 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,264 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,733 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,836 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,169 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,311 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,682 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,497 |
| Slavic Countries | 0 | - | 4.96 | 111,194 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,068 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,977 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,816 |
| History of Spain | 0 | - | 4.29 | 21,041 |
| Geography of Spain | 0 | - | 4.59 | 22,015 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,141 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,895 |
| British Geography A-Z | 0 | - | 4.41 | 19,463 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,447 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,664 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,458 |
| Champions League Winners | 0 | - | 4.92 | 1,000,286 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,598 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,306 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,860 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,433 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,553 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,196 |
| European Countries with One Border | 0 | - | 4.97 | 182,065 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,929 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,647 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,109 |
| Countries That Border Russia | 0 | - | 4.98 | 460,191 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,498 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,698 |
| Geography of the French Empire | 0 | - | 4.45 | 26,989 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| History of France | 0 | - | 4.59 | 56,563 |
| French History A-Z | 0 | - | 4.22 | 24,355 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,100 |
| States of Germany | 0 | - | 4.96 | 150,979 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,318 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,081 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,452 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,759 |
| Regions of Italy | 0 | - | 4.92 | 75,132 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,134 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,074 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| Spain Country Quiz | 0 | - | 4.45 | 127,995 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,684 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,303 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,069 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,384 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Monarchies of Asia | 0 | - | 4.97 | 70,805 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,604 |
| Battle to Country | 0 | - | 4.91 | 52,873 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,271 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,487 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,728 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,536 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,588 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,414 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,297 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,254 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,917 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,064 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,720 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,993 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,093 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,380 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,637 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,453 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,822 |
| Countries that Border Poland | 0 | - | 4.99 | 171,741 |
| Russia Country Quiz | 0 | - | 4.85 | 114,004 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,545 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,428 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,061 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,909 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,176 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,035 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,642 |
| Departments of France | 0 | - | 4.93 | 53,214 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,712 |
| Germany Country Quiz | 0 | - | 4.82 | 157,119 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,506 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,786 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| Italy Country Quiz | 0 | - | 4.82 | 122,625 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,772 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,404 |
| Famous Italians by Picture | 0 | - | 4.05 | 21,879 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,014 |
| Byzantine History | 0 | - | 4.91 | 28,690 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,620 |
| Finland Country Quiz | 0 | - | 4.50 | 59,338 |
| Norway Country Quiz | 0 | - | 4.44 | 76,937 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,970 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,365 |
