| Name the English Monarchs | 0 | - | 4.91 | 504,664 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,840 |
| Name that Greek Letter | 0 | - | 4.93 | 324,417 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,241 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,601 |
| The Trojan War | 0 | - | 4.83 | 39,880 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,471 |
| British History A-Z #1 | 0 | - | 4.45 | 46,625 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,282 |
| Roman Emperors | 0 | - | 4.95 | 120,638 |
| Russian History A-Z | 0 | - | 4.35 | 31,930 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,270 |
| German History A-Z | 0 | - | 4.49 | 24,688 |
| British Geography A-Z | 0 | - | 4.42 | 19,577 |
| London A-Z | 0 | - | 4.10 | 40,837 |
| Italian History A-Z | 0 | - | 4.21 | 17,753 |
| Spanish History A-Z | 0 | - | 4.37 | 19,333 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,439 |
| Monarchies of Europe | 0 | - | 4.90 | 98,485 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,902 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,085 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,286 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,469 |
| Countries Bordering France | 0 | - | 4.83 | 403,949 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,009 |
| Ancient Greek Words | 0 | - | 4.93 | 112,083 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,035 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,870 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,833 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,775 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,127 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,540 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,912 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,458 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,122 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,526 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,313 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,121 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,371 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,960 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,718 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,979 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,477 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,405 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,641 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,066 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,391 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,648 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,951 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,746 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,014 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,329 |
| French History A-Z | 0 | - | 4.27 | 24,819 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,722 |
| Counties of Ireland | 0 | - | 4.92 | 196,366 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,082 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,540 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,568 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,217 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,561 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,878 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,086 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,612 |
| Name a Country A-Z | 0 | - | 5.00 | 244,597 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,686 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,868 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,492 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,744 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,842 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,615 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,158 |
| British Monopoly Board | 0 | - | 4.52 | 41,213 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,839 |
| English Royal Consorts | 0 | - | 4.38 | 37,451 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,336 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,951 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,403 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,368 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,710 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,566 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,250 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,992 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,619 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,097 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,224 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,503 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,343 |
| European Geography A-Z | 0 | - | 4.29 | 49,395 |
| The Only European Country ... | 0 | - | 4.91 | 217,871 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,896 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,401 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,054 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,569 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,380 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,251,061 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,151 |
| History of Russia Quiz | 0 | - | 4.47 | 31,974 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,112 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,751 |
| History of Italy | 0 | - | 4.55 | 32,090 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 43,214 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,093 |
| Roman Names for Places | 0 | - | 4.62 | 58,530 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,339 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,256 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,500 |
| Counties of England | 0 | - | 4.97 | 800,080 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,001 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,903 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,835 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,909 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,094 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,233 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,129 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,690 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,808 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,490 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,083 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,760 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,071 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,756 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,523 |
| Slavic Countries | 0 | - | 4.96 | 112,031 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,055 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,382 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,639 |
| Famous Irish People | 0 | - | 4.05 | 46,032 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,505 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,344 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,368 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,813 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,541 |
| Champions League Winners | 0 | - | 4.92 | 1,011,378 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,306 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,888 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,530 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,047 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,511 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,175 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,098 |
| Countries that Start with A | 0 | - | 4.98 | 2,169,209 |
| Countries that Start with B | 0 | - | 4.95 | 2,300,298 |
| Countries that Start with C | 0 | - | 4.96 | 1,826,788 |
| Countries that Start with D | 0 | - | 4.96 | 713,075 |
| Countries that Start with E | 0 | - | 4.95 | 1,381,178 |
| Countries that Start with G | 0 | - | 4.97 | 1,507,431 |
| Countries that Start with H | 0 | - | 4.96 | 607,176 |
| Countries that Start with I | 0 | - | 4.92 | 1,291,478 |
| Countries that Start with J | 0 | - | 4.98 | 604,707 |
| Countries that Start with K | 0 | - | 4.97 | 818,296 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,775 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,817 |
| Countries that Start with P | 0 | - | 4.94 | 1,219,165 |
| Countries that Start with S | 0 | - | 4.98 | 1,759,082 |
| Countries that Start with T | 0 | - | 4.90 | 1,012,139 |
| Countries that Start with U | 0 | - | 4.97 | 906,316 |
| Countries that Start with V | 0 | - | 4.98 | 610,640 |
| Countries that Start with F | 0 | - | 4.83 | 619,463 |
| Countries that Start with M | 0 | - | 4.97 | 1,385,050 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,431 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,184 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,046 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,951 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,501 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,129 |
| European Countries with One Border | 0 | - | 4.97 | 183,305 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,084 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,509 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,370 |
| Countries That Border Russia | 0 | - | 4.98 | 463,433 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,227 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,018 |
| Geography of the French Empire | 0 | - | 4.45 | 27,178 |
| The French Revolution | 0 | - | 4.47 | 24,085 |
| Kings of France Quiz | 0 | - | 4.20 | 32,854 |
| History of France | 0 | - | 4.61 | 57,374 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,368 |
| States of Germany | 0 | - | 4.95 | 153,647 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,525 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,394 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,435 |
| Greece Country Quiz | 0 | - | 4.74 | 66,444 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,537 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,044 |
| Regions of Italy | 0 | - | 4.92 | 76,471 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,219 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,534 |
| The Vikings! | 0 | - | 4.46 | 28,381 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,746 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,504 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,275 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,426 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,001 |
| Geography of the British Empire | 0 | - | 4.48 | 39,786 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,499 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,777 |
