| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,672 |
| History of Italy | 0 | - | 4.55 | 31,870 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,531 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,051 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,664 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,304 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,295 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,695 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,762 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,355 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,248 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,585 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,244 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,015 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| Geography of the French Empire | 0 | - | 4.45 | 26,974 |
| The French Revolution | 0 | - | 4.46 | 23,838 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,411 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| The Portuguese Empire | 0 | - | 4.58 | 12,010 |
| Name the English Monarchs | 0 | - | 4.92 | 499,276 |
| History of France | 0 | - | 4.59 | 56,434 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,582 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,891 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,037 |
| The Only European Country ... | 0 | - | 4.91 | 214,667 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,030 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,561 |
| Name that Greek Letter | 0 | - | 4.94 | 322,177 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,633 |
| History of Russia Quiz | 0 | - | 4.49 | 31,825 |
| The Trojan War | 0 | - | 4.83 | 39,510 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,946 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,186 |
| Roman Emperors | 0 | - | 4.95 | 118,864 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,601 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,046 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,977 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,556 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,990 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,651 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,879 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,939 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,549 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,391 |
| Slavic Countries | 0 | - | 4.96 | 111,090 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,139 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,823 |
| History of Spain | 0 | - | 4.29 | 21,031 |
| Counties of England | 0 | - | 4.97 | 791,347 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,326 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,601 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,596 |
| Ancient Greek Words | 0 | - | 4.93 | 110,957 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,534 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,226 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,712 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,252 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,077 |
| Monarchies of Europe | 0 | - | 4.90 | 97,557 |
| European Countries with One Border | 0 | - | 4.97 | 181,922 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,824 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,538 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,823 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,378 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,557 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,020 |
| States of Germany | 0 | - | 4.96 | 150,740 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,234 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,919 |
| Regions of Italy | 0 | - | 4.92 | 75,005 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,747 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,004 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,851 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,572 |
| American to British Word Translation | 0 | - | 4.13 | 137,591 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,779 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,217 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,243 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,993 |
| Geography of the British Empire | 0 | - | 4.48 | 39,548 |
| Champions League Winners | 0 | - | 4.92 | 999,093 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,155 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,464 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,345 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,258 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,784 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,710 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,920 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,629 |
| Russia Country Quiz | 0 | - | 4.85 | 113,880 |
| Countries That Border Russia | 0 | - | 4.98 | 459,890 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,991 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,127 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,524 |
| Departments of France | 0 | - | 4.93 | 53,101 |
| Countries Bordering France | 0 | - | 4.83 | 400,662 |
| Germany Country Quiz | 0 | - | 4.82 | 156,931 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,413 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,644 |
| Italy Country Quiz | 0 | - | 4.82 | 122,508 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,683 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,334 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,410 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,590 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,285 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,890 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,633 |
| England or Wales? | 0 | - | 4.94 | 45,432 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,959 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,171 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,617 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,575 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,910 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,832 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,812 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,516 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,493 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,084 |
| History of The Netherlands | 0 | - | 4.46 | 17,348 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,305 |
| Medieval English History | 0 | - | 4.53 | 43,360 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,666,748 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,573 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,130 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,868 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,010 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,025 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,273 |
| Countries that Border Poland | 0 | - | 4.99 | 171,625 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,490 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,137 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,852 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,686 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,619 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,953 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,581 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,484 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,944 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,642 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,915 |
| French History Multiple Choice | 0 | - | 4.55 | 32,920 |
| Geography of Germany | 0 | - | 4.35 | 17,119 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,995 |
| History of Germany | 0 | - | 4.39 | 52,683 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,119 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,502 |
| Counties of Ireland | 0 | - | 4.92 | 193,683 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,578 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,700 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,591 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,744 |
| Roman Names for Places | 0 | - | 4.62 | 57,987 |
| Byzantine History | 0 | - | 4.91 | 28,670 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,004 |
| British to American Word Translation | 0 | - | 3.75 | 254,839 |
| British Foods by Description | 0 | - | 3.94 | 48,276 |
| British and American Word Differences | 0 | - | 2.64 | 46,802 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,532 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,163 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,712 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,655 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,099 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,397 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,008 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,874 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,876 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,956 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,926 |
| Bridges of London | 0 | - | 4.17 | 10,069 |
| British Sport Trivia | 0 | - | 4.37 | 20,390 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,380 |
| Famous Welsh People | 0 | - | 4.21 | 9,786 |
| Malta Country Quiz | 0 | - | 4.81 | 30,889 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,973 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,106 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,591 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,423 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,463 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,120 |
| Russian Inventions | 0 | - | 4.39 | 12,906 |
| French Inventions | 0 | - | 4.08 | 13,871 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,747 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,679 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,625 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,049 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,346 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,057 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,043 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,042 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,859 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,593 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,000 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,157 |
| British History A-Z #1 | 0 | - | 4.45 | 46,231 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,430 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,259 |
| History of Scotland | 0 | - | 4.51 | 21,031 |
