| Name the English Monarchs | 0 | - | 4.91 | 503,786 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,173 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,693 |
| Name that Greek Letter | 0 | - | 4.93 | 324,121 |
| The Trojan War | 0 | - | 4.83 | 39,793 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,200 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,640 |
| Roman Emperors | 0 | - | 4.95 | 120,365 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,571 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,459 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,278 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,559 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,704 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,175 |
| German History A-Z | 0 | - | 4.49 | 24,654 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,700 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,221 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,048 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,288 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,110 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,120 |
| States of Germany | 0 | - | 4.95 | 153,099 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,258 |
| Countries Bordering France | 0 | - | 4.83 | 403,457 |
| Germany Country Quiz | 0 | - | 4.83 | 158,142 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,865 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,704 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,785 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,986 |
| Roman Names for Places | 0 | - | 4.62 | 58,389 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,838 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,755 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,884 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,566 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,845 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,642 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,955 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,275 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,018 |
| Counties of Ireland | 0 | - | 4.92 | 195,943 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,011 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,306 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,321 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,211 |
| British History A-Z #1 | 0 | - | 4.45 | 46,570 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,792 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,734 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,782 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,982 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,931 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,349 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,518 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,629 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,202 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,722 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,494 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,050 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,711 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,655 |
| English Royal Consorts | 0 | - | 4.38 | 37,404 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,600 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,973 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,853 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,756 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,404 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,120 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,975 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,215 |
| Medieval English History | 0 | - | 4.53 | 43,565 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,200 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,997 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 141,907 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,504 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,010 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,490 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,635 |
| The Only European Country ... | 0 | - | 4.91 | 217,319 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,525 |
| History of Russia Quiz | 0 | - | 4.47 | 31,946 |
| History of Germany | 0 | - | 4.39 | 52,889 |
| Ancient Greek Words | 0 | - | 4.93 | 111,876 |
| History of Italy | 0 | - | 4.55 | 32,048 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,716 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,292 |
| Counties of England | 0 | - | 4.97 | 798,625 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,947 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,872 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,961 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,892 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,406 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,301 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,337 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,146 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,797 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,531 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,371 |
| Slavic Countries | 0 | - | 4.96 | 111,863 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,124 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,503 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,373 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,169 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,369 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,879 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,266 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,790 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,526 |
| Champions League Winners | 0 | - | 4.92 | 1,009,523 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,063 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,285 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,222 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,026 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,813 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,658 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,965 |
| Monarchies of Europe | 0 | - | 4.90 | 98,326 |
| European Countries with One Border | 0 | - | 4.97 | 183,090 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,866 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,840 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,318 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,289 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,571 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,900 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,000 |
| Russia Country Quiz | 0 | - | 4.83 | 114,676 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,934 |
| Countries That Border Russia | 0 | - | 4.98 | 462,743 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,455 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,075 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,408 |
| History of Austria | 0 | - | 4.70 | 17,900 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,758 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,768 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,093 |
| Departments of France | 0 | - | 4.93 | 54,413 |
| Geography of the French Empire | 0 | - | 4.45 | 27,152 |
| The French Revolution | 0 | - | 4.47 | 24,055 |
| History of France | 0 | - | 4.59 | 57,251 |
| French History A-Z | 0 | - | 4.27 | 24,751 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,586 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,836 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,652 |
| Regions of Italy | 0 | - | 4.92 | 76,202 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,628 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,281 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,609 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,400 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,093 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,335 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,162 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,382 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,132 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,946 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,398 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,643 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Animals in British History | 0 | - | 4.43 | 26,038 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,478 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,741 |
| England or Wales? | 0 | - | 4.94 | 45,787 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,943 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,737 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,707,091 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,043 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,176 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,499 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,605 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,334 |
| Countries that Border Poland | 0 | - | 4.99 | 172,573 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,965 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,422 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,398 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,641 |
| Countries that Beat France | 0 | - | 4.49 | 76,006 |
| France True or False? | 0 | - | 4.44 | 39,977 |
| French History Multiple Choice | 0 | - | 4.55 | 33,116 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,856 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,052 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,067 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,945 |
| Italian History A-Z | 0 | - | 4.21 | 17,736 |
| Byzantine History | 0 | - | 4.91 | 28,911 |
| Byzantine Emperors | 0 | - | 4.92 | 14,349 |
| History of The Netherlands | 0 | - | 4.46 | 17,476 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,396 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,010 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,410 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 53,117 |
| Finland Country Quiz | 0 | - | 4.50 | 59,772 |
| Norway Country Quiz | 0 | - | 4.44 | 77,480 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,228 |
| Spanish History A-Z | 0 | - | 4.37 | 19,322 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,519 |
| Arthurian Legend | 0 | - | 4.33 | 25,130 |
| British Monopoly Board | 0 | - | 4.52 | 41,191 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,346 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,404 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,954 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,939 |
