| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,395 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,153 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,539 |
| Counties of England | 0 | - | 4.97 | 789,467 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,989 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,456 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,455 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,148 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,042 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,214 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,752 |
| States of Germany | 0 | - | 4.96 | 150,150 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,055 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,541 |
| Regions of Italy | 0 | - | 4.92 | 74,764 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,848 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,406 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,219 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,002 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,390 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,160 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,248 |
| Departments of France | 0 | - | 4.93 | 52,862 |
| Germany Country Quiz | 0 | - | 4.82 | 156,607 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,184 |
| Italy Country Quiz | 0 | - | 4.82 | 122,254 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,431 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,111 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,377 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,098 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,689 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,339 |
| England or Wales? | 0 | - | 4.94 | 45,337 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,323 |
| The Vikings! | 0 | - | 4.46 | 28,248 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,710 |
| Name the English Monarchs | 0 | - | 4.92 | 498,103 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,190 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,819 |
| Geography of the British Empire | 0 | - | 4.48 | 39,483 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,415 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,093 |
| Name that Greek Letter | 0 | - | 4.94 | 321,730 |
| Malta Country Quiz | 0 | - | 4.81 | 30,836 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,067 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,386 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,630 |
| The Only European Country ... | 0 | - | 4.91 | 213,941 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,609 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| The Trojan War | 0 | - | 4.83 | 39,445 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,593 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,065 |
| Roman Emperors | 0 | - | 4.95 | 118,525 |
| History of The Netherlands | 0 | - | 4.46 | 17,318 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,878 |
| Medieval English History | 0 | - | 4.53 | 43,326 |
| History of Russia Quiz | 0 | - | 4.49 | 31,797 |
| French History Multiple Choice | 0 | - | 4.55 | 32,881 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,352 |
| History of Italy | 0 | - | 4.55 | 31,824 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,489 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,471 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 54,967 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,841 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,096 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,312 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,103 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,734 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,318 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,415 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,493 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,903 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,006 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,292 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,223 |
| Slavic Countries | 0 | - | 4.96 | 110,883 |
| Regions of France | 0 | - | 4.78 | 119,308 |
| France Immigration by Country | 0 | - | 4.72 | 75,981 |
| History of Germany | 0 | - | 4.39 | 52,623 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,479 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,422 |
| Ancient Greek Words | 0 | - | 4.92 | 110,727 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,847 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,060 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,002 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,401 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,692 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,076 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,128 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,354 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,063 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,429 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,914 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,851 |
| Monarchies of Europe | 0 | - | 4.90 | 97,349 |
| European Countries with One Border | 0 | - | 4.97 | 181,666 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,569 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,292 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,071 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,230 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,616 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,508 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,044 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,662 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,638 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,247 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,150 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,129 |
| History of Scotland | 0 | - | 4.51 | 21,006 |
| Champions League Winners | 0 | - | 4.92 | 996,746 |
| Countries That Border Russia | 0 | - | 4.98 | 458,996 |
| History of Austria | 0 | - | 4.70 | 17,758 |
| Austria Country Quiz | 0 | - | 4.57 | 59,362 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,260 |
| France Country Quiz | 0 | - | 4.70 | 133,885 |
| Geography of the French Empire | 0 | - | 4.48 | 26,941 |
| The French Revolution | 0 | - | 4.46 | 23,789 |
| Countries Bordering France | 0 | - | 4.83 | 399,422 |
| Kings of France Quiz | 0 | - | 4.20 | 32,561 |
| History of France | 0 | - | 4.59 | 56,099 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,388 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,133 |
| Greece Country Quiz | 0 | - | 4.74 | 65,773 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,490 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,253 |
| Netherlands Country Quiz | 0 | - | 4.50 | 79,992 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,775 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,367 |
| The Portuguese Empire | 0 | - | 4.54 | 11,995 |
| Spain Country Quiz | 0 | - | 4.45 | 127,649 |
| Switzerland Country Quiz | 0 | - | 4.51 | 62,949 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,237 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,568 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,187 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,494 |
| Counties of Wales | 0 | - | 4.63 | 38,912 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,939 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,274 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,141 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,633 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,299 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,235 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,923 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,297 |
| Russia Country Quiz | 0 | - | 4.85 | 113,667 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,869 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,045 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,023 |
| History of Ireland | 0 | - | 4.39 | 30,838 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,975 |
| Canary Islands | 0 | - | 4.61 | 17,406 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,949 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,172 |
| British Spellings | 0 | - | 4.07 | 99,241 |
| British Groups of Things | 0 | - | 4.25 | 82,687 |
| British Acronyms | 0 | - | 4.39 | 45,625 |
| UK Immigration by Country | 0 | - | 4.94 | 139,695 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,951 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,233 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.62 | 24,495 |
| Geography of Scotland | 0 | - | 4.63 | 21,486 |
| Former Dominions of the British Empire | 0 | - | 4.30 | 24,087 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,548 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,656,037 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,309 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,458 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,799 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,603 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,871 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,111 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,853 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,000 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,796 |
| Countries that Border Poland | 0 | - | 4.99 | 171,390 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,394 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,562 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,716 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,628 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,548 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,776 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,525 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,799 |
| 20 Questions About France | 0 | - | 4.11 | 32,340 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,550 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,820 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,320 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,407 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,932 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,445 |
| Counties of Ireland | 0 | - | 4.92 | 193,149 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,470 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,369 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,544 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,682 |
| Roman Names for Places | 0 | - | 4.62 | 57,890 |
| Byzantine History | 0 | - | 4.91 | 28,627 |
