| Name the English Monarchs | 0 | - | 4.91 | 506,380 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,450 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,928 |
| Name that Greek Letter | 0 | - | 4.93 | 324,979 |
| The Trojan War | 0 | - | 4.83 | 39,990 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,957 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,590 |
| Roman Emperors | 0 | - | 4.95 | 121,197 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,857 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,554 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,648 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,318 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,557 |
| German History A-Z | 0 | - | 4.49 | 24,917 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,378 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,420 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,773 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,848 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,582 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,797 |
| States of Germany | 0 | - | 4.95 | 154,498 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,690 |
| Countries Bordering France | 0 | - | 4.83 | 404,911 |
| Germany Country Quiz | 0 | - | 4.82 | 158,838 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,308 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,841 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,292 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,206 |
| Roman Names for Places | 0 | - | 4.62 | 58,707 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,968 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,951 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,304 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,751 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,086 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,949 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,149 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,479 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,143 |
| Counties of Ireland | 0 | - | 4.92 | 197,317 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,256 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,387 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,122 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,379 |
| British History A-Z #1 | 0 | - | 4.45 | 47,262 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,082 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,058 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,070 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,305 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,885 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,701 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,559 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,580 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,175 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,264 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,155 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,880 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,353 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,089 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,333 |
| English Royal Consorts | 0 | - | 4.38 | 37,525 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 406,793 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,243 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,993 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,755 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,653 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,178 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,230 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,313 |
| Medieval English History | 0 | - | 4.53 | 43,655 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,318 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,089 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,413 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,801 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,118 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,657 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,115 |
| The Only European Country ... | 0 | - | 4.91 | 219,016 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,513 |
| History of Russia Quiz | 0 | - | 4.47 | 32,005 |
| History of Germany | 0 | - | 4.39 | 52,971 |
| Ancient Greek Words | 0 | - | 4.93 | 112,461 |
| History of Italy | 0 | - | 4.55 | 32,147 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,821 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,425 |
| Counties of England | 0 | - | 4.97 | 802,943 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,098 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,990 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,705 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,513 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,057 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,800 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,776 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,757 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,790 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,184 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,792 |
| Slavic Countries | 0 | - | 4.96 | 112,369 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,255 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,616 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,240 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,412 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,813 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,500 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,871 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,565 |
| Champions League Winners | 0 | - | 4.92 | 1,016,160 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,900 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,884 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,793 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,719 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,501 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,599 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,473 |
| Monarchies of Europe | 0 | - | 4.90 | 98,877 |
| European Countries with One Border | 0 | - | 4.97 | 183,804 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,543 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,867 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,926 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,807 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,924 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,651 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,888 |
| Russia Country Quiz | 0 | - | 4.83 | 115,316 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,485 |
| Countries That Border Russia | 0 | - | 4.98 | 464,507 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,745 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,478 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,591 |
| History of Austria | 0 | - | 4.70 | 17,972 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,939 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,644 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,809 |
| Departments of France | 0 | - | 4.93 | 55,163 |
| Geography of the French Empire | 0 | - | 4.45 | 27,218 |
| The French Revolution | 0 | - | 4.47 | 24,147 |
| History of France | 0 | - | 4.61 | 57,612 |
| French History A-Z | 0 | - | 4.27 | 25,135 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,069 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,967 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,849 |
| Regions of Italy | 0 | - | 4.92 | 77,085 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,243 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,054 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,740 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,801 |
| The Vikings! | 0 | - | 4.46 | 28,406 |
| The Portuguese Empire | 0 | - | 4.58 | 12,106 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,496 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,316 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,865 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,761 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,523 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,770 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,462 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,250 |
| Geography of the British Empire | 0 | - | 4.48 | 39,846 |
| Animals in British History | 0 | - | 4.43 | 26,098 |
| British History A-Z #2 | 0 | - | 4.26 | 11,851 |
| The Reign of Queen Victoria | 0 | - | 4.34 | 23,547 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,842 |
| England or Wales? | 0 | - | 4.94 | 45,969 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,536 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,922 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,726,035 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,788 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,357 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,726 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,941 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,082 |
| Countries that Border Poland | 0 | - | 4.99 | 173,169 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,266 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,852 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,009 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,092 |
| Countries that Beat France | 0 | - | 4.48 | 76,374 |
| France True or False? | 0 | - | 4.44 | 40,075 |
| French History Multiple Choice | 0 | - | 4.55 | 33,233 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,906 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,498 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,239 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,045 |
| Italian History A-Z | 0 | - | 4.16 | 17,929 |
| Byzantine History | 0 | - | 4.91 | 29,022 |
| Byzantine Emperors | 0 | - | 4.93 | 14,596 |
| History of The Netherlands | 0 | - | 4.46 | 17,554 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,614 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,268 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,522 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 53,198 |
| Finland Country Quiz | 0 | - | 4.51 | 60,008 |
| Norway Country Quiz | 0 | - | 4.45 | 77,822 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,393 |
| Spanish History A-Z | 0 | - | 4.37 | 19,509 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,709 |
| Arthurian Legend | 0 | - | 4.33 | 25,178 |
| British Monopoly Board | 0 | - | 4.52 | 41,270 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,857 |
| British Geography Quiz #1 | 0 | - | 4.55 | 54,240 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,063 |
