| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,678 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,015 |
| Counties of England | 0 | - | 4.97 | 791,418 |
| History of Italy | 0 | - | 4.55 | 31,871 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,052 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,665 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,719 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,309 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,705 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,784 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,363 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,255 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,570 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,032 |
| States of Germany | 0 | - | 4.96 | 150,760 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,241 |
| Regions of Italy | 0 | - | 4.92 | 75,013 |
| History of The Netherlands | 0 | - | 4.46 | 17,348 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,872 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,597 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,228 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,590 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,252 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,974 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,049 |
| History of Austria | 0 | - | 4.70 | 17,781 |
| Geography of the French Empire | 0 | - | 4.45 | 26,976 |
| The French Revolution | 0 | - | 4.46 | 23,841 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,412 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,011 |
| Name the English Monarchs | 0 | - | 4.92 | 499,316 |
| History of France | 0 | - | 4.59 | 56,451 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,716 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,244 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,001 |
| Geography of the British Empire | 0 | - | 4.48 | 39,550 |
| Malta Country Quiz | 0 | - | 4.81 | 30,897 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,607 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,908 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,065 |
| The Only European Country ... | 0 | - | 4.91 | 214,709 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,048 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,626 |
| Name that Greek Letter | 0 | - | 4.94 | 322,208 |
| History of Russia Quiz | 0 | - | 4.49 | 31,827 |
| The Trojan War | 0 | - | 4.83 | 39,514 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,953 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,192 |
| Roman Emperors | 0 | - | 4.95 | 118,889 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,130 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,856 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,133 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,984 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,564 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,018 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,657 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,897 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,981 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,567 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,397 |
| Slavic Countries | 0 | - | 4.96 | 111,099 |
| French History Multiple Choice | 0 | - | 4.55 | 32,920 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,140 |
| History of Germany | 0 | - | 4.39 | 52,686 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,841 |
| History of Spain | 0 | - | 4.29 | 21,031 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,714 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,100 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,665 |
| Regions of France | 0 | - | 4.78 | 119,688 |
| France Immigration by Country | 0 | - | 4.72 | 76,104 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,640 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,647 |
| Ancient Greek Words | 0 | - | 4.93 | 110,968 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,111 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,534 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,464 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,537 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,231 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,731 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,271 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,088 |
| Monarchies of Europe | 0 | - | 4.90 | 97,563 |
| European Countries with One Border | 0 | - | 4.97 | 181,950 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,836 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,550 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,862 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,402 |
| French Inventions | 0 | - | 4.08 | 13,871 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,932 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,060 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,753 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,144 |
| American to British Word Translation | 0 | - | 4.13 | 137,661 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,780 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,456 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,244 |
| Champions League Winners | 0 | - | 4.92 | 999,221 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,171 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,474 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,359 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,301 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,805 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,743 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,978 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,654 |
| Russia Country Quiz | 0 | - | 4.85 | 113,892 |
| Countries That Border Russia | 0 | - | 4.98 | 459,922 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,998 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,133 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,531 |
| Departments of France | 0 | - | 4.93 | 53,114 |
| Countries Bordering France | 0 | - | 4.83 | 400,700 |
| Germany Country Quiz | 0 | - | 4.82 | 156,959 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,424 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,665 |
| Italy Country Quiz | 0 | - | 4.82 | 122,525 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,692 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,340 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,411 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,625 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,291 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,898 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,651 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,121 |
| England or Wales? | 0 | - | 4.94 | 45,435 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,974 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,211 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,617 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,602 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,916 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,838 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,815 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,542 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,086 |
| Canary Islands | 0 | - | 4.61 | 17,426 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,306 |
| British Spellings | 0 | - | 4.07 | 99,325 |
| British Groups of Things | 0 | - | 4.25 | 82,742 |
| British Acronyms | 0 | - | 4.39 | 45,672 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,980 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,696 |
| Geography of Scotland | 0 | - | 4.63 | 21,520 |
| Medieval English History | 0 | - | 4.53 | 43,362 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,667,409 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,587 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,876 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,016 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,029 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,288 |
| Countries that Border Poland | 0 | - | 4.99 | 171,639 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,499 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,172 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,857 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,690 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,623 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,960 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,587 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,487 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,949 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,642 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,929 |
| Geography of Germany | 0 | - | 4.35 | 17,121 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,029 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,123 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,509 |
| Counties of Ireland | 0 | - | 4.92 | 193,706 |
| Italian Inventions | 0 | - | 3.81 | 18,420 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,584 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,727 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,594 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,745 |
| Roman Names for Places | 0 | - | 4.62 | 57,990 |
| Byzantine History | 0 | - | 4.91 | 28,670 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,024 |
| British to American Word Translation | 0 | - | 3.75 | 254,847 |
| British Foods by Description | 0 | - | 3.94 | 48,278 |
| British and American Word Differences | 0 | - | 2.64 | 46,804 |
| English Inventions #1 | 0 | - | 3.15 | 23,530 |
| English Inventions #2 | 0 | - | 4.00 | 8,674 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,533 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,194 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,657 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,399 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,009 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,875 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,949 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,964 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,929 |
| Bridges of London | 0 | - | 4.17 | 10,069 |
| British Sport Trivia | 0 | - | 4.37 | 20,391 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,411 |
| Famous Welsh People | 0 | - | 4.21 | 9,786 |
| Liechtenstein Country Quiz | 0 | - | 4.64 | 26,938 |
| San Marino Country Quiz | 0 | - | 4.70 | 28,814 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,012 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,114 |
