| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,944 |
| Name that Greek Letter | 0 | - | 4.93 | 324,187 |
| Ancient Greek Words | 0 | - | 4.93 | 111,920 |
| The Trojan War | 0 | - | 4.83 | 39,800 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,261 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,941 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,824 |
| British History A-Z #1 | 0 | - | 4.45 | 46,585 |
| Name the English Monarchs | 0 | - | 4.91 | 504,011 |
| Russian History A-Z | 0 | - | 4.35 | 31,871 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,202 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,179 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,564 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,501 |
| Monarchies of Europe | 0 | - | 4.90 | 98,358 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,765 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,718 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,988 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,383 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,781 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,332 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,999 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,332 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,208 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,016 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,290 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,842 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,891 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,368 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,272 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,944 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,647 |
| German History A-Z | 0 | - | 4.49 | 24,665 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,904 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,281 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,116 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,621 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,163 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,095 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,656 |
| Roman Emperors | 0 | - | 4.95 | 120,408 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,749 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,746 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,103 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,784 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,068 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,264 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,618 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,467 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,154 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,894 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,535 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,015 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,151 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,447 |
| European Geography A-Z | 0 | - | 4.29 | 49,368 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,939 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,219 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,847 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,780 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,033 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,352 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,595 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,789 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,839 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,706 |
| The Only European Country ... | 0 | - | 4.91 | 217,422 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,594 |
| History of Russia Quiz | 0 | - | 4.47 | 31,952 |
| Germany A-Z | 0 | - | 4.56 | 62,700 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,512 |
| History of Italy | 0 | - | 4.55 | 32,055 |
| Italy A-Z | 0 | - | 4.49 | 58,447 |
| Italian History A-Z | 0 | - | 4.21 | 17,741 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,650 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,014 |
| Roman History by Picture | 0 | - | 4.46 | 26,500 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,299 |
| Spanish History A-Z | 0 | - | 4.37 | 19,323 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,426 |
| Counties of England | 0 | - | 4.97 | 798,993 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,959 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,818 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,887 |
| Premier League Relegated Teams | 0 | - | 4.81 | 126,927 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,243 |
| India A-Z | 0 | - | 4.42 | 34,180 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,938 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,446 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,405 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,367 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,056 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,307 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,094 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,569 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,414 |
| Slavic Countries | 0 | - | 4.96 | 111,895 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,388 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,372 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,059 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,341 |
| British Geography A-Z | 0 | - | 4.42 | 19,562 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,723 |
| London A-Z | 0 | - | 4.10 | 40,816 |
| Champions League Winners | 0 | - | 4.92 | 1,009,991 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,266 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,840 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,501 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,013 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,473 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,134 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,038 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,914 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,294 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,183 |
| Countries that Start with D | 0 | - | 4.96 | 711,878 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,804 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,067 |
| Countries that Start with H | 0 | - | 4.96 | 606,328 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,355 |
| Countries that Start with J | 0 | - | 4.98 | 603,924 |
| Countries that Start with K | 0 | - | 4.97 | 817,467 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,707 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,774 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,154 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,690 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,362 |
| Countries that Start with U | 0 | - | 4.97 | 905,715 |
| Countries that Start with V | 0 | - | 4.98 | 610,186 |
| Countries that Start with F | 0 | - | 4.83 | 618,819 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,906 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,389 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,764 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,942 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,055 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,867 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,733 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,395 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,999 |
| European Countries with One Border | 0 | - | 4.97 | 183,133 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,905 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,394 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,134 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,056 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,321 |
| Russia Country Quiz | 0 | - | 4.83 | 114,706 |
| Russia A-Z | 0 | - | 4.46 | 27,268 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,036 |
| Countries That Border Russia | 0 | - | 4.98 | 462,853 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,472 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,104 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,417 |
| History of Austria | 0 | - | 4.70 | 17,906 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,779 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,865 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,179 |
| Departments of France | 0 | - | 4.93 | 54,479 |
| Geography of the French Empire | 0 | - | 4.45 | 27,156 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| Countries Bordering France | 0 | - | 4.83 | 403,580 |
| Kings of France Quiz | 0 | - | 4.20 | 32,819 |
| History of France | 0 | - | 4.59 | 57,279 |
| French History A-Z | 0 | - | 4.27 | 24,766 |
| Germany Country Quiz | 0 | - | 4.83 | 158,194 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,228 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,636 |
| States of Germany | 0 | - | 4.95 | 153,232 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,294 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,709 |
| Greece Country Quiz | 0 | - | 4.74 | 66,373 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,748 |
| Regions of Italy | 0 | - | 4.92 | 76,250 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,669 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,615 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,618 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,123 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,434 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,083 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,122 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,426 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,232 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,423 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,167 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,996 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| English Royal Consorts | 0 | - | 4.38 | 37,414 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,677 |
| Geography of the British Empire | 0 | - | 4.48 | 39,735 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,482 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| England or Wales? | 0 | - | 4.94 | 45,804 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,017 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,515 |
| Monarchies of Asia | 0 | - | 4.97 | 71,229 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,360 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,103 |
