| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,465 |
| Name that Greek Letter | 0 | - | 4.93 | 322,493 |
| Ancient Greek Words | 0 | - | 4.93 | 111,082 |
| The Trojan War | 0 | - | 4.83 | 39,552 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,127 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,607 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,668 |
| British History A-Z #1 | 0 | - | 4.45 | 46,289 |
| Name the English Monarchs | 0 | - | 4.92 | 499,990 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,734 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,074 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,297 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,146 |
| Monarchies of Europe | 0 | - | 4.90 | 97,677 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,501 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,169 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,661 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,118 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,099 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,977 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,435 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,300 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,022 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,435 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,593 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,794 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,609 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,459 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,701 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,036 |
| German History A-Z | 0 | - | 4.49 | 24,509 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,235 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,826 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,743 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,991 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,289 |
| Russian History A-Z | 0 | - | 4.38 | 31,380 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,418 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,486 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,204 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,131 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,108 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,512 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,957 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,160 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,425 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,846 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,091 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,710 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,671 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,356 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,083 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,424 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,648 |
| European Geography A-Z | 0 | - | 4.29 | 49,103 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,294 |
| History of The Netherlands | 0 | - | 4.46 | 17,354 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,079 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,681 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,458 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,915 |
| India A-Z | 0 | - | 4.42 | 34,013 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,772 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,871 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,168 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,249 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,263 |
| The Only European Country ... | 0 | - | 4.91 | 215,044 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,267 |
| History of Russia Quiz | 0 | - | 4.49 | 31,839 |
| Germany A-Z | 0 | - | 4.56 | 62,453 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,309 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Italy A-Z | 0 | - | 4.49 | 57,989 |
| Italian History A-Z | 0 | - | 4.21 | 17,623 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,522 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,590 |
| Roman History by Picture | 0 | - | 4.46 | 26,392 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,557 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Spanish History A-Z | 0 | - | 4.37 | 19,222 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,930 |
| Counties of England | 0 | - | 4.97 | 792,314 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,707 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,476 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,751 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,388 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,117 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,678 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,345 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,743 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,844 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,227 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,361 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,711 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,510 |
| Slavic Countries | 0 | - | 4.96 | 111,220 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,087 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,311 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,070 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,150 |
| British Geography A-Z | 0 | - | 4.41 | 19,464 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,455 |
| London A-Z | 0 | - | 4.10 | 40,694 |
| Champions League Winners | 0 | - | 4.92 | 1,000,464 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,945 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,516 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,254 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,701 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,180 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,821 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,465 |
| Countries that Start with B | 0 | - | 4.95 | 2,285,761 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,038 |
| Countries that Start with D | 0 | - | 4.96 | 704,791 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,403 |
| Countries that Start with G | 0 | - | 4.97 | 1,496,931 |
| Countries that Start with H | 0 | - | 4.96 | 600,664 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,445 |
| Countries that Start with J | 0 | - | 4.98 | 598,683 |
| Countries that Start with K | 0 | - | 4.97 | 811,852 |
| Countries that Start with L | 0 | - | 4.98 | 1,085,940 |
| Countries that Start with N | 0 | - | 4.93 | 1,112,901 |
| Countries that Start with P | 0 | - | 4.94 | 1,211,758 |
| Countries that Start with S | 0 | - | 4.98 | 1,748,681 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,510 |
| Countries that Start with U | 0 | - | 4.97 | 901,792 |
| Countries that Start with V | 0 | - | 4.98 | 607,017 |
| Countries that Start with F | 0 | - | 4.83 | 614,421 |
| Countries that Start with M | 0 | - | 4.97 | 1,376,728 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,290 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,583 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,440 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,802 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,676 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,326 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,889 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,463 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,570 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,219 |
| European Countries with One Border | 0 | - | 4.97 | 182,084 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,952 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,678 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,592 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,298 |
| Russia Country Quiz | 0 | - | 4.85 | 114,020 |
| Russia A-Z | 0 | - | 4.46 | 27,185 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,214 |
| Countries That Border Russia | 0 | - | 4.98 | 460,258 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,076 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,517 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,184 |
| History of Austria | 0 | - | 4.70 | 17,795 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,726 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,678 |
| Departments of France | 0 | - | 4.93 | 53,269 |
| Geography of the French Empire | 0 | - | 4.45 | 26,997 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| Countries Bordering France | 0 | - | 4.83 | 401,048 |
| Kings of France Quiz | 0 | - | 4.20 | 32,624 |
| History of France | 0 | - | 4.59 | 56,589 |
| French History A-Z | 0 | - | 4.22 | 24,373 |
| Germany Country Quiz | 0 | - | 4.82 | 157,141 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,120 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,528 |
| States of Germany | 0 | - | 4.96 | 151,021 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,345 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,959 |
| Greece Country Quiz | 0 | - | 4.74 | 65,967 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,799 |
| Regions of Italy | 0 | - | 4.92 | 75,171 |
| Italy Country Quiz | 0 | - | 4.82 | 122,642 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,790 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,429 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,427 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,015 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,516 |
| The Vikings! | 0 | - | 4.46 | 28,283 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,379 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,141 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,014 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,713 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,320 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,813 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,262 |
| English Royal Consorts | 0 | - | 4.37 | 37,265 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,080 |
| Geography of the British Empire | 0 | - | 4.48 | 39,578 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,386 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,614 |
| England or Wales? | 0 | - | 4.94 | 45,476 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,201 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,676 |
| Monarchies of Asia | 0 | - | 4.97 | 70,817 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,267 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,012 |
