| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,519 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,252 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,687 |
| Counties of England | 0 | - | 4.97 | 791,062 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,653 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,253 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,676 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,712 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,337 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,220 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,499 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,991 |
| States of Germany | 0 | - | 4.96 | 150,669 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,205 |
| Regions of Italy | 0 | - | 4.92 | 74,983 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,989 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,818 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,537 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,191 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,316 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,228 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,457 |
| Departments of France | 0 | - | 4.93 | 53,073 |
| Germany Country Quiz | 0 | - | 4.82 | 156,871 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,389 |
| Italy Country Quiz | 0 | - | 4.82 | 122,464 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,638 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,303 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,409 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,256 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,857 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,594 |
| England or Wales? | 0 | - | 4.94 | 45,418 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,919 |
| History of Austria | 0 | - | 4.70 | 17,779 |
| Name the English Monarchs | 0 | - | 4.92 | 499,127 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,238 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,977 |
| Geography of the British Empire | 0 | - | 4.48 | 39,540 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,472 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,404 |
| Name that Greek Letter | 0 | - | 4.94 | 322,129 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,057 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,149 |
| Malta Country Quiz | 0 | - | 4.81 | 30,887 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,531 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,817 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,986 |
| The Only European Country ... | 0 | - | 4.91 | 214,580 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,985 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,829 |
| The Trojan War | 0 | - | 4.83 | 39,502 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,807 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,893 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,176 |
| Roman Emperors | 0 | - | 4.95 | 118,834 |
| History of The Netherlands | 0 | - | 4.46 | 17,346 |
| Medieval English History | 0 | - | 4.53 | 43,354 |
| History of Russia Quiz | 0 | - | 4.49 | 31,820 |
| French History Multiple Choice | 0 | - | 4.55 | 32,911 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,752 |
| History of Italy | 0 | - | 4.55 | 31,865 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,524 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,040 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,650 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,004 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,871 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,126 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,643 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,026 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,832 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,949 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,527 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,934 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,639 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,729 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,841 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,519 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,373 |
| Slavic Countries | 0 | - | 4.96 | 111,061 |
| Regions of France | 0 | - | 4.78 | 119,643 |
| France Immigration by Country | 0 | - | 4.72 | 76,080 |
| History of Germany | 0 | - | 4.39 | 52,673 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,618 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,489 |
| Ancient Greek Words | 0 | - | 4.92 | 110,937 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,949 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,105 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,159 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,453 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,707 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,096 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,372 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,522 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,203 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,665 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,210 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,037 |
| Monarchies of Europe | 0 | - | 4.90 | 97,533 |
| European Countries with One Border | 0 | - | 4.97 | 181,886 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,793 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,516 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,740 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,364 |
| French Inventions | 0 | - | 4.08 | 13,871 |
| History of Paris | 0 | - | 4.24 | 13,625 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,875 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,489 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,733 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,793 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,407 |
| History of Scotland | 0 | - | 4.51 | 21,028 |
| Champions League Winners | 0 | - | 4.92 | 998,710 |
| Countries That Border Russia | 0 | - | 4.98 | 459,800 |
| Austria Country Quiz | 0 | - | 4.57 | 59,450 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,377 |
| France Country Quiz | 0 | - | 4.70 | 134,046 |
| Geography of the French Empire | 0 | - | 4.45 | 26,968 |
| The French Revolution | 0 | - | 4.46 | 23,832 |
| Countries Bordering France | 0 | - | 4.83 | 400,563 |
| Kings of France Quiz | 0 | - | 4.20 | 32,597 |
| History of France | 0 | - | 4.59 | 56,397 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,409 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,582 |
| Greece Country Quiz | 0 | - | 4.74 | 65,875 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,557 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,311 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,111 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,890 |
| The Vikings! | 0 | - | 4.46 | 28,268 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,764 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,500 |
| The Portuguese Empire | 0 | - | 4.54 | 12,008 |
| Spain Country Quiz | 0 | - | 4.45 | 127,850 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,049 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,353 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,598 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,240 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,581 |
| Counties of Wales | 0 | - | 4.63 | 39,011 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,129 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,433 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,311 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,139 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,721 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,628 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,750 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,571 |
| Russia Country Quiz | 0 | - | 4.85 | 113,843 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,981 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,124 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,463 |
| History of Ireland | 0 | - | 4.39 | 30,925 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,069 |
| Canary Islands | 0 | - | 4.61 | 17,424 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,234 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,281 |
| British Spellings | 0 | - | 4.07 | 99,316 |
| British Groups of Things | 0 | - | 4.25 | 82,735 |
| British Acronyms | 0 | - | 4.39 | 45,668 |
| UK Immigration by Country | 0 | - | 4.94 | 139,933 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,976 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,555 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,664 |
| Geography of Scotland | 0 | - | 4.63 | 21,516 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,117 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,876 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,665,427 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,539 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,988 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,858 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,614 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,992 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,498 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,001 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,226 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,887 |
| Countries that Border Poland | 0 | - | 4.99 | 171,599 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,476 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,065 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,832 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,681 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,608 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,926 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,573 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,933 |
| 20 Questions About France | 0 | - | 4.11 | 32,352 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,628 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,899 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,057 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,372 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,913 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,587 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,094 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,497 |
| Counties of Ireland | 0 | - | 4.92 | 193,624 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,569 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,662 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,587 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,740 |
