| Name the English Monarchs | 0 | - | 4.92 | 498,826 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,974 |
| Name that Greek Letter | 0 | - | 4.94 | 321,986 |
| The Trojan War | 0 | - | 4.83 | 39,483 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,795 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,143 |
| Roman Emperors | 0 | - | 4.95 | 118,698 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,438 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,625 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,611 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,755 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,778 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,563 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,575 |
| German History A-Z | 0 | - | 4.49 | 24,457 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,154 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,609 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,628 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,280 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,177 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,922 |
| States of Germany | 0 | - | 4.96 | 150,503 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,160 |
| Countries Bordering France | 0 | - | 4.83 | 400,310 |
| Germany Country Quiz | 0 | - | 4.82 | 156,812 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,028 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,484 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,575 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,733 |
| Roman Names for Places | 0 | - | 4.62 | 57,943 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,639 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,370 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,970 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,210 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,560 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,890 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,599 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,877 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,755 |
| Counties of Ireland | 0 | - | 4.92 | 193,455 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,538 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,558 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,866 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,633 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,989 |
| British History A-Z #1 | 0 | - | 4.45 | 46,176 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,404 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,217 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,878 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,868 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,715 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,698 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,401 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,439 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,985 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,962 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,790 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,555 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,940 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,577 |
| English Royal Consorts | 0 | - | 4.37 | 37,221 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,942 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,684 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,678 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,195 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,040 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,986 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,416 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,054 |
| Medieval English History | 0 | - | 4.53 | 43,349 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,988 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,860 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,476 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,381 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,755 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,344 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,862 |
| The Only European Country ... | 0 | - | 4.91 | 214,350 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,875 |
| History of Russia Quiz | 0 | - | 4.49 | 31,808 |
| History of Germany | 0 | - | 4.39 | 52,665 |
| Ancient Greek Words | 0 | - | 4.92 | 110,867 |
| History of Italy | 0 | - | 4.55 | 31,857 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,511 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,017 |
| Counties of England | 0 | - | 4.97 | 790,453 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,624 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,711 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,939 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,877 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,457 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,757 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,595 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,265 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,602 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,442 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,339 |
| Slavic Countries | 0 | - | 4.96 | 111,007 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 66,943 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,002 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,020 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,299 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,222 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,692 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,635 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,441 |
| Champions League Winners | 0 | - | 4.92 | 998,000 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,076 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,481 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,377 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,256 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,161 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,591 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,115 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,960 |
| Monarchies of Europe | 0 | - | 4.90 | 97,477 |
| European Countries with One Border | 0 | - | 4.97 | 181,814 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,713 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,952 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,569 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,459 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,487 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,495 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,472 |
| Russia Country Quiz | 0 | - | 4.85 | 113,798 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,525 |
| Countries That Border Russia | 0 | - | 4.98 | 459,600 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,953 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,322 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,103 |
| History of Austria | 0 | - | 4.70 | 17,774 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,421 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,407 |
| Departments of France | 0 | - | 4.93 | 53,011 |
| Geography of the French Empire | 0 | - | 4.45 | 26,962 |
| The French Revolution | 0 | - | 4.46 | 23,816 |
| History of France | 0 | - | 4.59 | 56,304 |
| French History A-Z | 0 | - | 4.22 | 23,987 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,342 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,330 |
| Regions of Italy | 0 | - | 4.92 | 74,913 |
| Italy Country Quiz | 0 | - | 4.82 | 122,411 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,574 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,262 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,949 |
| The Vikings! | 0 | - | 4.46 | 28,261 |
| The Portuguese Empire | 0 | - | 4.54 | 12,005 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,209 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,603 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,799 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,474 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,158 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,541 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,224 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,943 |
| Geography of the British Empire | 0 | - | 4.48 | 39,526 |
| Animals in British History | 0 | - | 4.44 | 25,897 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,362 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,574 |
| England or Wales? | 0 | - | 4.94 | 45,396 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,774 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,333 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,662,121 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,453 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,840 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,941 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,944 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,152 |
| Countries that Border Poland | 0 | - | 4.99 | 171,532 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,451 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,920 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,788 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,879 |
| Countries that Beat France | 0 | - | 4.49 | 75,279 |
| France True or False? | 0 | - | 4.43 | 39,816 |
| French History Multiple Choice | 0 | - | 4.55 | 32,903 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,762 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,666 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,817 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,801 |
| Italian History A-Z | 0 | - | 4.21 | 17,580 |
| Byzantine History | 0 | - | 4.91 | 28,657 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,190 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,520 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,168 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 52,967 |
| Finland Country Quiz | 0 | - | 4.50 | 59,217 |
| Norway Country Quiz | 0 | - | 4.44 | 76,779 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,912 |
| Spanish History A-Z | 0 | - | 4.37 | 19,183 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,137 |
| Arthurian Legend | 0 | - | 4.33 | 25,059 |
| British Monopoly Board | 0 | - | 4.52 | 41,069 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,443 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,196 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,716 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,386 |
