| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,434 |
| Name that Greek Letter | 0 | - | 4.93 | 322,489 |
| Ancient Greek Words | 0 | - | 4.93 | 111,075 |
| The Trojan War | 0 | - | 4.83 | 39,551 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,122 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,607 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,666 |
| British History A-Z #1 | 0 | - | 4.45 | 46,289 |
| Name the English Monarchs | 0 | - | 4.92 | 499,979 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,733 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,074 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,284 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,144 |
| Monarchies of Europe | 0 | - | 4.90 | 97,676 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,498 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,167 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,661 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,117 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,096 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,975 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,434 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,296 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,021 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,434 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,593 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,792 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,606 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,457 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,694 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,028 |
| German History A-Z | 0 | - | 4.49 | 24,509 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,230 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,826 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,738 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,841 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,288 |
| Russian History A-Z | 0 | - | 4.38 | 31,377 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,418 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,464 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,266 |
| Roman Emperors | 0 | - | 4.95 | 119,198 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,130 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,105 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,500 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,949 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,156 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,423 |
| 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 | 94,670 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,356 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,082 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,424 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,646 |
| European Geography A-Z | 0 | - | 4.29 | 49,103 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,271 |
| 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 | 139,912 |
| India A-Z | 0 | - | 4.42 | 34,013 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,771 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,866 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,112 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,227 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,257 |
| The Only European Country ... | 0 | - | 4.91 | 215,036 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,258 |
| History of Russia Quiz | 0 | - | 4.49 | 31,838 |
| 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 | 57,986 |
| Italian History A-Z | 0 | - | 4.21 | 17,623 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,522 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,586 |
| Roman History by Picture | 0 | - | 4.46 | 26,391 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,557 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Spanish History A-Z | 0 | - | 4.37 | 19,221 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,927 |
| Counties of England | 0 | - | 4.97 | 792,302 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,706 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,475 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,749 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,373 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,112 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,677 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,332 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,742 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,842 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,220 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,346 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,706 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,510 |
| Slavic Countries | 0 | - | 4.96 | 111,215 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,086 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,311 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,060 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,149 |
| British Geography A-Z | 0 | - | 4.41 | 19,464 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,454 |
| London A-Z | 0 | - | 4.10 | 40,694 |
| Champions League Winners | 0 | - | 4.92 | 1,000,445 |
| 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 | 61,253 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,701 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,179 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,819 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,387 |
| Countries that Start with B | 0 | - | 4.95 | 2,285,686 |
| Countries that Start with C | 0 | - | 4.96 | 1,814,997 |
| Countries that Start with D | 0 | - | 4.96 | 704,764 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,365 |
| Countries that Start with G | 0 | - | 4.97 | 1,496,905 |
| Countries that Start with H | 0 | - | 4.96 | 600,638 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,410 |
| Countries that Start with J | 0 | - | 4.98 | 598,658 |
| Countries that Start with K | 0 | - | 4.97 | 811,827 |
| Countries that Start with L | 0 | - | 4.98 | 1,085,909 |
| Countries that Start with N | 0 | - | 4.93 | 1,112,864 |
| Countries that Start with P | 0 | - | 4.94 | 1,211,726 |
| Countries that Start with S | 0 | - | 4.98 | 1,748,624 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,479 |
| Countries that Start with U | 0 | - | 4.97 | 901,765 |
| Countries that Start with V | 0 | - | 4.98 | 606,974 |
| Countries that Start with F | 0 | - | 4.83 | 614,392 |
| Countries that Start with M | 0 | - | 4.97 | 1,376,680 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,282 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,565 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,432 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,796 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,673 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,318 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,881 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,457 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,568 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,216 |
| European Countries with One Border | 0 | - | 4.97 | 182,081 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,948 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,669 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,572 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,296 |
| Russia Country Quiz | 0 | - | 4.85 | 114,015 |
| Russia A-Z | 0 | - | 4.46 | 27,184 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,196 |
| Countries That Border Russia | 0 | - | 4.98 | 460,243 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,070 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,516 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,183 |
| History of Austria | 0 | - | 4.70 | 17,795 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,717 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,677 |
| Departments of France | 0 | - | 4.93 | 53,265 |
| Geography of the French Empire | 0 | - | 4.45 | 26,997 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| Countries Bordering France | 0 | - | 4.83 | 401,032 |
| Kings of France Quiz | 0 | - | 4.20 | 32,624 |
| History of France | 0 | - | 4.59 | 56,585 |
| French History A-Z | 0 | - | 4.22 | 24,369 |
| Germany Country Quiz | 0 | - | 4.82 | 157,137 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,117 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,528 |
| States of Germany | 0 | - | 4.96 | 151,013 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,336 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,953 |
| Greece Country Quiz | 0 | - | 4.74 | 65,964 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,790 |
| Regions of Italy | 0 | - | 4.92 | 75,157 |
| Italy Country Quiz | 0 | - | 4.82 | 122,638 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,782 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,426 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,426 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,015 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,085 |
| The Vikings! | 0 | - | 4.46 | 28,283 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,378 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,136 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,012 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,709 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,318 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,808 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,261 |
| English Royal Consorts | 0 | - | 4.37 | 37,265 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,079 |
| Geography of the British Empire | 0 | - | 4.48 | 39,577 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,385 |
| 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 | 129,199 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,674 |
| Monarchies of Asia | 0 | - | 4.97 | 70,816 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,257 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,008 |
