| Name the English Monarchs | 0 | - | 4.92 | 498,028 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,018 |
| Name that Greek Letter | 0 | - | 4.94 | 321,713 |
| The Trojan War | 0 | - | 4.83 | 39,438 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,559 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,059 |
| Roman Emperors | 0 | - | 4.95 | 118,508 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,101 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,532 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,323 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,373 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,493 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,401 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,474 |
| German History A-Z | 0 | - | 4.49 | 24,258 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,977 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,444 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,438 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,135 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,033 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,717 |
| States of Germany | 0 | - | 4.96 | 150,117 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,039 |
| Countries Bordering France | 0 | - | 4.83 | 399,298 |
| Germany Country Quiz | 0 | - | 4.82 | 156,587 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,919 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,441 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,541 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,676 |
| Roman Names for Places | 0 | - | 4.62 | 57,881 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,300 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,954 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,155 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,520 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,790 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,540 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,811 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,695 |
| Counties of Ireland | 0 | - | 4.92 | 193,127 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,464 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,354 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,338 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,662 |
| British History A-Z #1 | 0 | - | 4.45 | 45,876 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,326 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,125 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,756 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,775 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,257 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,610 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,388 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,424 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,889 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,117 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,867 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,687 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,478 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,857 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,337 |
| English Royal Consorts | 0 | - | 4.37 | 37,167 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,616 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,308 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,346 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,629 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,294 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,964 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,958 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,357 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,026 |
| Medieval English History | 0 | - | 4.53 | 43,325 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,961 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,838 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,180 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,039 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,072 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,997 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,596 |
| The Only European Country ... | 0 | - | 4.91 | 213,901 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,581 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| History of Germany | 0 | - | 4.39 | 52,619 |
| Ancient Greek Words | 0 | - | 4.92 | 110,714 |
| History of Italy | 0 | - | 4.55 | 31,819 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,486 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Counties of England | 0 | - | 4.97 | 789,372 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,437 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,680 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,039 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,727 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,305 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,387 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,486 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,879 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,975 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,283 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,215 |
| Slavic Countries | 0 | - | 4.96 | 110,874 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 66,908 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,937 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,986 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,291 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,611 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,627 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,614 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,430 |
| Champions League Winners | 0 | - | 4.92 | 996,587 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,917 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,343 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,265 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,132 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,054 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,417 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,894 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,839 |
| Monarchies of Europe | 0 | - | 4.90 | 97,337 |
| European Countries with One Border | 0 | - | 4.97 | 181,654 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,551 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,593 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,254 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,286 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,201 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,872 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,277 |
| Russia Country Quiz | 0 | - | 4.85 | 113,653 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,033 |
| Countries That Border Russia | 0 | - | 4.98 | 458,969 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,863 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,221 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,043 |
| History of Austria | 0 | - | 4.70 | 17,754 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,166 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,227 |
| Departments of France | 0 | - | 4.93 | 52,848 |
| Geography of the French Empire | 0 | - | 4.48 | 26,938 |
| The French Revolution | 0 | - | 4.46 | 23,786 |
| History of France | 0 | - | 4.59 | 56,080 |
| French History A-Z | 0 | - | 4.17 | 20,418 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,171 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,994 |
| Regions of Italy | 0 | - | 4.92 | 74,742 |
| Italy Country Quiz | 0 | - | 4.82 | 122,234 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,410 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,101 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,373 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,831 |
| The Vikings! | 0 | - | 4.46 | 28,247 |
| The Portuguese Empire | 0 | - | 4.54 | 11,993 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,969 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,383 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,662 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,213 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,962 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,317 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,186 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,797 |
| Geography of the British Empire | 0 | - | 4.48 | 39,478 |
| Animals in British History | 0 | - | 4.44 | 25,871 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,339 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,449 |
| England or Wales? | 0 | - | 4.94 | 45,328 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,529 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,284 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,318 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,283 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,797 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,867 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,849 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,990 |
| Countries that Border Poland | 0 | - | 4.99 | 171,377 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,385 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,535 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,709 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,771 |
| Countries that Beat France | 0 | - | 4.49 | 75,187 |
| France True or False? | 0 | - | 4.43 | 39,785 |
| French History Multiple Choice | 0 | - | 4.55 | 32,880 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,757 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,592 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Italian History A-Z | 0 | - | 4.21 | 17,417 |
| Byzantine History | 0 | - | 4.91 | 28,626 |
| History of The Netherlands | 0 | - | 4.46 | 17,315 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,149 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,449 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,124 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 52,931 |
| Finland Country Quiz | 0 | - | 4.50 | 59,134 |
| Norway Country Quiz | 0 | - | 4.44 | 76,646 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,863 |
| Spanish History A-Z | 0 | - | 4.37 | 19,058 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,085 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| British Monopoly Board | 0 | - | 4.52 | 41,038 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,293 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,157 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,693 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,726 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,096 |
