| Name the English Monarchs | 0 | - | 4.92 | 498,449 |
| Monarchies of Europe | 0 | - | 4.90 | 97,401 |
| The Trojan War | 0 | - | 4.83 | 39,467 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,581 |
| Name that Greek Letter | 0 | - | 4.94 | 321,843 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,703 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,115 |
| Roman Emperors | 0 | - | 4.95 | 118,614 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,391 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,422 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,373 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,058 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,514 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,547 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,199 |
| Countries Bordering France | 0 | - | 4.83 | 399,938 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,275 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,577 |
| Most-Visited Countries by Swedes | 0 | - | 4.64 | 52,942 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,633 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,336 |
| Monarchies of Asia | 0 | - | 4.97 | 70,650 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,307 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,323 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,184 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,770 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,345 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,391 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,188 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,542 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,845 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,576 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,846 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,549 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,005 |
| Counties of Ireland | 0 | - | 4.92 | 193,249 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,499 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,442 |
| Sweden Country Quiz | 0 | - | 4.35 | 67,775 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,437 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,805 |
| British History A-Z #1 | 0 | - | 4.45 | 46,122 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,811 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,836 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,517 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,656 |
| Kings of France Quiz | 0 | - | 4.20 | 32,576 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,479 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,013 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,941 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,490 |
| Finland Country Quiz | 0 | - | 4.50 | 59,177 |
| Norway Country Quiz | 0 | - | 4.44 | 76,708 |
| Iceland Country Quiz | 0 | - | 4.69 | 42,892 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,917 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,735 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,518 |
| British Monopoly Board | 0 | - | 4.52 | 41,044 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,913 |
| English Royal Consorts | 0 | - | 4.37 | 37,202 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,611 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,206 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,531 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,725 |
| The Only European Country ... | 0 | - | 4.91 | 214,114 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,737 |
| German History A-Z | 0 | - | 4.49 | 24,411 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,855 |
| History of The Netherlands | 0 | - | 4.46 | 17,326 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,996 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,325 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,483 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,685 |
| History of Russia Quiz | 0 | - | 4.49 | 31,802 |
| Ancient Greek Words | 0 | - | 4.92 | 110,794 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,975 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,467 |
| History of Italy | 0 | - | 4.55 | 31,842 |
| Italian History A-Z | 0 | - | 4.21 | 17,546 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,565 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,704 |
| Roman Names for Places | 0 | - | 4.62 | 57,915 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,496 |
| Greenland Country Quiz | 0 | - | 4.78 | 36,156 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,003 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,042 |
| Spanish History A-Z | 0 | - | 4.37 | 19,163 |
| Counties of England | 0 | - | 4.97 | 789,927 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,569 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,364 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,177 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,700 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,512 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,463 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,960 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,912 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,765 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,276 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,005 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,721 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,676 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,057 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,370 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,637 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,793 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,394 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,569 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,538 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,773 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,069 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,214 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,364 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,284 |
| Slavic Countries | 0 | - | 4.96 | 110,937 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,745 |
| Famous Irish People | 0 | - | 4.05 | 45,867 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,913 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,662 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,693 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,292 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,080 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,629 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,436 |
| London A-Z | 0 | - | 4.10 | 40,656 |
| Champions League Winners | 0 | - | 4.92 | 997,362 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,449 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,096 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,508 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,012 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,300 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,903 |
| European Countries with One Border | 0 | - | 4.97 | 181,734 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,637 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,916 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,289 |
| Countries That Border Russia | 0 | - | 4.98 | 459,210 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,273 |
| History of Austria | 0 | - | 4.70 | 17,765 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,314 |
| Geography of the French Empire | 0 | - | 4.45 | 26,947 |
| The French Revolution | 0 | - | 4.46 | 23,801 |
| History of France | 0 | - | 4.59 | 56,188 |
| French History A-Z | 0 | - | 4.22 | 23,560 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,831 |
| States of Germany | 0 | - | 4.96 | 150,294 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,393 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,110 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,430 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,168 |
| Regions of Italy | 0 | - | 4.92 | 74,831 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,898 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,803 |
| The Vikings! | 0 | - | 4.46 | 28,254 |
| The Portuguese Empire | 0 | - | 4.54 | 12,000 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,481 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,387 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,105 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,275 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,365 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,213 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,891 |
| Geography of the British Empire | 0 | - | 4.48 | 39,508 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,356 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,555 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,054 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,469 |
| Battle to Country | 0 | - | 4.91 | 52,595 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,010 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,179 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,150 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,155 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,560 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,659,120 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,270 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,708 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,942 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,328 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,537 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,202 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,958 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,327 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,542 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,822 |
| European Geography A-Z | 0 | - | 4.28 | 49,028 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,900 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,885 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,430 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,068 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,160 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,366 |
| Countries that Border Poland | 0 | - | 4.99 | 171,457 |
| Russia Country Quiz | 0 | - | 4.85 | 113,718 |
| Russian History A-Z | 0 | - | 4.38 | 31,115 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,423 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,725 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,910 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,759 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,078 |
