| Name the English Monarchs | 0 | - | 4.92 | 499,873 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,725 |
| Monarchies of Europe | 0 | - | 4.90 | 97,661 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,479 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,811 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,908 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,448 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,062 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,574 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,447 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,631 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,982 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,387 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,700 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,419 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,293 |
| Name that Greek Letter | 0 | - | 4.93 | 322,448 |
| Hindu Countries | 0 | - | 4.86 | 49,800 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,807 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,110 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,218 |
| The Only European Country ... | 0 | - | 4.91 | 214,969 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,224 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,102 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,124 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,256 |
| Roman Emperors | 0 | - | 4.95 | 119,149 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,601 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,552 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,700 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,677 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,453 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,135 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,715 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,104 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,091 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,664 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,263 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,733 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,835 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,162 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,308 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,681 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,496 |
| Slavic Countries | 0 | - | 4.96 | 111,193 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,144 |
| Ancient Greek Words | 0 | - | 4.93 | 111,057 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,920 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,140 |
| Counties of England | 0 | - | 4.97 | 792,131 |
| British History A-Z #1 | 0 | - | 4.45 | 46,281 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,279 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,598 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,304 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,858 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,428 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,551 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,196 |
| European Countries with One Border | 0 | - | 4.97 | 182,064 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,929 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,645 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,103 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,495 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,698 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,100 |
| States of Germany | 0 | - | 4.96 | 150,978 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,316 |
| Regions of Italy | 0 | - | 4.92 | 75,131 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,966 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,816 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,072 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,106 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,683 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,302 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,447 |
| Champions League Winners | 0 | - | 4.92 | 1,000,274 |
| Monarchies of Asia | 0 | - | 4.97 | 70,805 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,604 |
| Battle to Country | 0 | - | 4.91 | 52,872 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,452 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,608 |
| Countries That Border Russia | 0 | - | 4.98 | 460,191 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Geography of the French Empire | 0 | - | 4.45 | 26,989 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| Countries Bordering France | 0 | - | 4.83 | 400,984 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| History of France | 0 | - | 4.59 | 56,560 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,819 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,081 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,897 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| English Royal Consorts | 0 | - | 4.37 | 37,259 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,069 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Israel Immigration by Country | 0 | - | 4.29 | 35,819 |
| Countries Closest to Israel | 0 | - | 4.67 | 105,411 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,269 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,137 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,728 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,535 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,413 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,253 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,990 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,637 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,446 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,819 |
| Russia Country Quiz | 0 | - | 4.85 | 114,003 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,058 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,176 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,639 |
| Departments of France | 0 | - | 4.93 | 53,210 |
| Germany Country Quiz | 0 | - | 4.82 | 157,116 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,502 |
| German History A-Z | 0 | - | 4.49 | 24,502 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,756 |
| Italy Country Quiz | 0 | - | 4.82 | 122,623 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,771 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,403 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,364 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,990 |
| British Acronyms | 0 | - | 4.39 | 45,694 |
| British Monopoly Board | 0 | - | 4.52 | 41,091 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,782 |
| Medieval English History | 0 | - | 4.53 | 43,386 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,160 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,668 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,644 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,009 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,233 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,994 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,487 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,573 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,263 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,147 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,568 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,917 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,624 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,063 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,719 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,777 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,093 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,379 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,967 |
| Countries that Border Poland | 0 | - | 4.99 | 171,741 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,544 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,426 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,909 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,715 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,643 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,034 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,619 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,517 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,007 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,682 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,960 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,279 |
| History of Germany | 0 | - | 4.39 | 52,709 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,214 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,529 |
| Counties of Ireland | 0 | - | 4.92 | 193,921 |
| Italian History A-Z | 0 | - | 4.21 | 17,620 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,617 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,840 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,615 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,771 |
| Roman Names for Places | 0 | - | 4.62 | 58,037 |
| Byzantine History | 0 | - | 4.91 | 28,690 |
| History of Spain | 0 | - | 4.29 | 21,041 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,073 |
| Spanish History A-Z | 0 | - | 4.37 | 19,220 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,169 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,384 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,721 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,110 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,031 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,891 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,748 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,401 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,016 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,988 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,868 |
| Malta Country Quiz | 0 | - | 4.81 | 30,919 |
| History of Israel | 0 | - | 3.79 | 11,007 |
| The 12 Tribes of Israel | 0 | - | 3.68 | 9,845 |
