| Name the English Monarchs | 0 | - | 4.92 | 497,493 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,331 |
| Name that Greek Letter | 0 | - | 4.94 | 321,468 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,916 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,388 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,989 |
| Roman Emperors | 0 | - | 4.95 | 118,336 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,104 |
| Countries Bordering France | 0 | - | 4.85 | 397,363 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,480 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,763 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,555 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,808 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,316 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,271 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,009 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,930 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,023 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,809 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,409 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,516 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,648 |
| Roman Names for Places | 0 | - | 4.62 | 57,832 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,260 |
| Departments of France | 0 | - | 4.93 | 52,696 |
| French History A-Z | 0 | - | 4.17 | 18,616 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,772 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,489 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,557 |
| British History A-Z #1 | 0 | - | 4.45 | 45,768 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,287 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,043 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,255 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,885 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,680 |
| History of France | 0 | - | 4.59 | 55,914 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,087 |
| Counties of Ireland | 0 | - | 4.92 | 192,854 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,388 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,192 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,298 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,158 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,084 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,426 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,469 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,214 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,628 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,714 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 396,788 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,104 |
| Geography of the French Empire | 0 | - | 4.48 | 26,916 |
| The French Revolution | 0 | - | 4.46 | 23,753 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,272 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,409 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,413 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,817 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,109 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,769 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,609 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,411 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,772 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,109 |
| English Royal Consorts | 0 | - | 4.37 | 37,143 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,591 |
| The Vietnam War | 0 | - | 4.43 | 35,278 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,271 |
| Countries in World War I | 0 | - | 4.88 | 226,423 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,112 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,384 |
| Countries that Beat France | 0 | - | 4.49 | 75,122 |
| France True or False? | 0 | - | 4.43 | 39,763 |
| French History Multiple Choice | 0 | - | 4.55 | 32,860 |
| German History A-Z | 0 | - | 4.49 | 24,188 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,097 |
| Ancient Greek Words | 0 | - | 4.92 | 110,574 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,938 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,291 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,004 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,623 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,937 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,817 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,661 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 138,933 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,367 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,782 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,654 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,771 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,379 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,613 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,216 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,093 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,416 |
| The Only European Country ... | 0 | - | 4.91 | 213,558 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,602 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,594 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,360 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,593 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,237 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,179 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,086 |
| Slavic Countries | 0 | - | 4.96 | 110,786 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,083 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,356 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,972 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,285 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,189 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,964 |
| Arthurian Legend | 0 | - | 4.33 | 25,047 |
| Counties of England | 0 | - | 4.97 | 788,518 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,360 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,781 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,382 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,597 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,424 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,540 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,300 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,823 |
| The American Revolution | 0 | - | 4.52 | 54,039 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,273 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,975 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,244 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,702 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,691 |
| Monarchies of Europe | 0 | - | 4.90 | 97,232 |
| European Countries with One Border | 0 | - | 4.97 | 181,497 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,003 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,138 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,662 |
| Countries That Border Russia | 0 | - | 4.98 | 458,622 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,114 |
| France Country Quiz | 0 | - | 4.70 | 133,742 |
| French Inventions | 0 | - | 4.08 | 13,859 |
| Regions of France | 0 | - | 4.78 | 119,075 |
| France Immigration by Country | 0 | - | 4.72 | 75,925 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Kings of France Quiz | 0 | - | 4.20 | 32,540 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,582 |
| States of Germany | 0 | - | 4.96 | 149,841 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,930 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,906 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,724 |
| Regions of Italy | 0 | - | 4.92 | 74,611 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,749 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,173 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,067 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,854 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,156 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,716 |
| Geography of the British Empire | 0 | - | 4.48 | 39,464 |
| Animals in British History | 0 | - | 4.44 | 25,863 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,329 |
| Champions League Winners | 0 | - | 4.92 | 995,303 |
| Countries in World War II | 0 | - | 4.53 | 903,669 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,737 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,799 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,135 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,309 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,798 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,150 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,982 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,183 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,049 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,759 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,788 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,063 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,128 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,753 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,055 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,280 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,014 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,951 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,385 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,068 |
| Countries that Border Poland | 0 | - | 4.99 | 171,242 |
| Russia Country Quiz | 0 | - | 4.85 | 113,576 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,338 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,209 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,800 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,628 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,004 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,665 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,085 |
| Countries Two Borders Away From France | 0 | - | 4.36 | 27,477 |
| Famous French People by Picture | 0 | - | 3.70 | 27,800 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,614 |
| Germany Country Quiz | 0 | - | 4.82 | 156,425 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,073 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,748 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,550 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,743 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
