| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,193 |
| Counties of England | 0 | - | 4.97 | 798,842 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,719 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,954 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,955 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,743 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,387 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,096 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,314 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,134 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,817 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,150 |
| States of Germany | 0 | - | 4.95 | 153,174 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,282 |
| Regions of Italy | 0 | - | 4.92 | 76,231 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,421 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,400 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,414 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,151 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,753 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,576 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,021 |
| History of Austria | 0 | - | 4.70 | 17,903 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,063 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Name the English Monarchs | 0 | - | 4.91 | 503,925 |
| History of France | 0 | - | 4.59 | 57,269 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,504 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,403 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,666 |
| Geography of the British Empire | 0 | - | 4.48 | 39,734 |
| Malta Country Quiz | 0 | - | 4.81 | 31,115 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,559 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,028 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,672 |
| The Only European Country ... | 0 | - | 4.91 | 217,385 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,577 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,855 |
| Name that Greek Letter | 0 | - | 4.93 | 324,159 |
| History of The Netherlands | 0 | - | 4.46 | 17,483 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,237 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,649 |
| Roman Emperors | 0 | - | 4.95 | 120,388 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,267 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,493 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,713 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,922 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,431 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,366 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,357 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,218 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,981 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,557 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,392 |
| Slavic Countries | 0 | - | 4.96 | 111,879 |
| French History Multiple Choice | 0 | - | 4.55 | 33,125 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,507 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,472 |
| History of Germany | 0 | - | 4.39 | 52,898 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,503 |
| History of Spain | 0 | - | 4.23 | 21,116 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,781 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,186 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,154 |
| Regions of France | 0 | - | 4.72 | 121,228 |
| France Immigration by Country | 0 | - | 4.70 | 76,681 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,139 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,865 |
| Ancient Greek Words | 0 | - | 4.93 | 111,900 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,497 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,339 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,440 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,692 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,040 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,845 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,700 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,985 |
| Monarchies of Europe | 0 | - | 4.90 | 98,346 |
| European Countries with One Border | 0 | - | 4.97 | 183,115 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,895 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,294 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,995 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,092 |
| French Inventions | 0 | - | 4.10 | 13,908 |
| History of Paris | 0 | - | 4.24 | 13,659 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,590 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,126 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,276 |
| American to British Word Translation | 0 | - | 4.14 | 139,308 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,945 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,147 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,372 |
| Champions League Winners | 0 | - | 4.92 | 1,009,826 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,076 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,343 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,258 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,907 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,360 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,619 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,019 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,029 |
| Russia Country Quiz | 0 | - | 4.83 | 114,692 |
| Countries That Border Russia | 0 | - | 4.98 | 462,814 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,466 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,414 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,773 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,145 |
| Departments of France | 0 | - | 4.93 | 54,457 |
| Countries Bordering France | 0 | - | 4.83 | 403,540 |
| Germany Country Quiz | 0 | - | 4.83 | 158,172 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,622 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,670 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,653 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,502 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,614 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,993 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,116 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,207 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,977 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,212 |
| England or Wales? | 0 | - | 4.94 | 45,794 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,987 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,562 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,591 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,410 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,839 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,706 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,415 |
| Canary Islands | 0 | - | 4.62 | 17,492 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,830 |
| British Spellings | 0 | - | 4.06 | 99,507 |
| British Groups of Things | 0 | - | 4.25 | 82,908 |
| British Acronyms | 0 | - | 4.40 | 45,849 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,054 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,389 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,940 |
| Geography of Scotland | 0 | - | 4.63 | 21,656 |
| Medieval English History | 0 | - | 4.53 | 43,571 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,178 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,067 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,184 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,514 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,631 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,367 |
| Countries that Border Poland | 0 | - | 4.99 | 172,605 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,979 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,489 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,419 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,924 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,882 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,659 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,851 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,659 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,964 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,283 |
| Geography of Germany | 0 | - | 4.35 | 17,207 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,351 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,888 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,709 |
| Counties of Ireland | 0 | - | 4.92 | 196,051 |
| Italian Inventions | 0 | - | 3.81 | 18,458 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,020 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,349 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,789 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,991 |
| Roman Names for Places | 0 | - | 4.62 | 58,396 |
| Byzantine History | 0 | - | 4.91 | 28,916 |
| Byzantine Emperors | 0 | - | 4.92 | 14,359 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,217 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,356 |
| British to American Word Translation | 0 | - | 3.74 | 255,169 |
| British Foods by Description | 0 | - | 3.94 | 48,340 |
| British and American Word Differences | 0 | - | 2.63 | 46,898 |
| English Inventions #1 | 0 | - | 3.15 | 23,572 |
| English Inventions #2 | 0 | - | 3.95 | 8,707 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,611 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,262 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,844 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,766 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,204 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,999 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,051 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,797 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,002 |
| Bridges of London | 0 | - | 4.17 | 10,119 |
| British Sport Trivia | 0 | - | 4.37 | 20,486 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,731 |
| Famous Welsh People | 0 | - | 4.31 | 11,569 |
| Liechtenstein Country Quiz | 0 | - | 4.64 | 27,128 |
| San Marino Country Quiz | 0 | - | 4.73 | 29,032 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,591 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,543 |
