| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,678 |
| History of Italy | 0 | - | 4.55 | 31,870 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,534 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,051 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,665 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,642 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,304 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,702 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,781 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,361 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,254 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,590 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,252 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,042 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| 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 | 23,411 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,011 |
| Name the English Monarchs | 0 | - | 4.92 | 499,307 |
| History of France | 0 | - | 4.59 | 56,445 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,597 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,906 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,058 |
| The Only European Country ... | 0 | - | 4.91 | 214,701 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,045 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,610 |
| Name that Greek Letter | 0 | - | 4.94 | 322,205 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,634 |
| History of Russia Quiz | 0 | - | 4.49 | 31,825 |
| The Trojan War | 0 | - | 4.83 | 39,513 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,953 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,192 |
| Roman Emperors | 0 | - | 4.95 | 118,887 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,796 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,114 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,982 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,562 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,009 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,657 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,894 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,971 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,562 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,395 |
| Slavic Countries | 0 | - | 4.96 | 111,096 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,140 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,838 |
| History of Spain | 0 | - | 4.29 | 21,031 |
| Counties of England | 0 | - | 4.97 | 791,395 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,328 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,656 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,628 |
| Ancient Greek Words | 0 | - | 4.93 | 110,966 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,536 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,230 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,726 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,265 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,085 |
| Monarchies of Europe | 0 | - | 4.90 | 97,563 |
| European Countries with One Border | 0 | - | 4.97 | 181,948 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,833 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,543 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,857 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,400 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,566 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,025 |
| States of Germany | 0 | - | 4.96 | 150,758 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,238 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,930 |
| Regions of Italy | 0 | - | 4.92 | 75,013 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,751 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,012 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,869 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,578 |
| American to British Word Translation | 0 | - | 4.13 | 137,642 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,780 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,227 |
| 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 |
| Champions League Winners | 0 | - | 4.92 | 999,202 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,167 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,469 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,356 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,291 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,800 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,736 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,966 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,647 |
| Russia Country Quiz | 0 | - | 4.85 | 113,888 |
| Countries That Border Russia | 0 | - | 4.98 | 459,920 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,996 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,132 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,529 |
| Departments of France | 0 | - | 4.93 | 53,112 |
| Countries Bordering France | 0 | - | 4.83 | 400,692 |
| Germany Country Quiz | 0 | - | 4.82 | 156,952 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,421 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,662 |
| Italy Country Quiz | 0 | - | 4.82 | 122,521 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,692 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,339 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,411 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,617 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,289 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,897 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,645 |
| England or Wales? | 0 | - | 4.94 | 45,434 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,971 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,202 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,617 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,599 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,916 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,835 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,815 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,538 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,495 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,086 |
| History of The Netherlands | 0 | - | 4.46 | 17,348 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,306 |
| Medieval English History | 0 | - | 4.53 | 43,362 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,667,259 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,583 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,130 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,875 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,015 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,029 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,287 |
| Countries that Border Poland | 0 | - | 4.99 | 171,638 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,497 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,165 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,857 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,689 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,622 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,957 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,586 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,486 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,948 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,642 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,927 |
| French History Multiple Choice | 0 | - | 4.55 | 32,920 |
| Geography of Germany | 0 | - | 4.35 | 17,121 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,024 |
| History of Germany | 0 | - | 4.39 | 52,686 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,122 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,508 |
| Counties of Ireland | 0 | - | 4.92 | 193,703 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,581 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,721 |
| 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 | 57,988 |
| Byzantine History | 0 | - | 4.91 | 28,670 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,021 |
| British to American Word Translation | 0 | - | 3.75 | 254,844 |
| British Foods by Description | 0 | - | 3.94 | 48,277 |
| British and American Word Differences | 0 | - | 2.64 | 46,804 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,533 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,189 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,714 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,655 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,100 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,398 |
| 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 | 435,938 |
| 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 | 398,403 |
| Famous Welsh People | 0 | - | 4.21 | 9,786 |
| Malta Country Quiz | 0 | - | 4.81 | 30,893 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,002 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,111 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,595 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,431 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,492 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,129 |
| Russian Inventions | 0 | - | 4.39 | 12,908 |
| French Inventions | 0 | - | 4.08 | 13,871 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,755 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,689 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,630 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,050 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,349 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,060 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,048 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,047 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,864 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,600 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,011 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,160 |
| British History A-Z #1 | 0 | - | 4.45 | 46,236 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,432 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,261 |
| History of Scotland | 0 | - | 4.51 | 21,031 |
