| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,254 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,023 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,449 |
| Counties of England | 0 | - | 4.97 | 798,465 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,155 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,665 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,092 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,009 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,258 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,084 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,734 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,077 |
| States of Germany | 0 | - | 4.95 | 153,037 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,232 |
| Regions of Italy | 0 | - | 4.92 | 76,175 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,375 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,270 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,374 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,112 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,122 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,553 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,752 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,061 |
| Departments of France | 0 | - | 4.93 | 54,390 |
| Germany Country Quiz | 0 | - | 4.83 | 158,120 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,559 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,591 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,267 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,599 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,073 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,000 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,916 |
| England or Wales? | 0 | - | 4.94 | 45,775 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,811 |
| The Vikings! | 0 | - | 4.46 | 28,366 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,198 |
| Name the English Monarchs | 0 | - | 4.91 | 503,672 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,396 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,626 |
| Geography of the British Empire | 0 | - | 4.48 | 39,731 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,541 |
| Name that Greek Letter | 0 | - | 4.93 | 324,092 |
| Malta Country Quiz | 0 | - | 4.81 | 31,100 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,042 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,449 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,914 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,599 |
| The Only European Country ... | 0 | - | 4.91 | 217,250 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,482 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,059 |
| The Trojan War | 0 | - | 4.83 | 39,783 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,944 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,129 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,627 |
| Roman Emperors | 0 | - | 4.95 | 120,318 |
| History of The Netherlands | 0 | - | 4.46 | 17,469 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,707 |
| Medieval English History | 0 | - | 4.53 | 43,561 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| French History Multiple Choice | 0 | - | 4.55 | 33,110 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,402 |
| History of Italy | 0 | - | 4.55 | 32,041 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,714 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,287 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,937 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,200 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,994 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,259 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,518 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,510 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,303 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,862 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,375 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,220 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,318 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,113 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,665 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,504 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,349 |
| Slavic Countries | 0 | - | 4.96 | 111,830 |
| Regions of France | 0 | - | 4.72 | 121,135 |
| France Immigration by Country | 0 | - | 4.70 | 76,648 |
| History of Germany | 0 | - | 4.39 | 52,884 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,126 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,653 |
| Ancient Greek Words | 0 | - | 4.93 | 111,840 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,470 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,327 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,394 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,677 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,775 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,181 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,759 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,011 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,780 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,619 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,947 |
| Monarchies of Europe | 0 | - | 4.90 | 98,303 |
| European Countries with One Border | 0 | - | 4.97 | 183,052 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,828 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 82,417 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,876 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,044 |
| French Inventions | 0 | - | 4.10 | 13,905 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,526 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,122 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,759 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,242 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,012 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,076 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,294 |
| History of Scotland | 0 | - | 4.51 | 21,116 |
| Champions League Winners | 0 | - | 4.91 | 1,009,243 |
| Countries That Border Russia | 0 | - | 4.98 | 462,627 |
| History of Austria | 0 | - | 4.70 | 17,894 |
| Austria Country Quiz | 0 | - | 4.57 | 59,819 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,910 |
| France Country Quiz | 0 | - | 4.70 | 135,135 |
| Geography of the French Empire | 0 | - | 4.45 | 27,149 |
| The French Revolution | 0 | - | 4.47 | 24,050 |
| Countries Bordering France | 0 | - | 4.83 | 403,352 |
| Kings of France Quiz | 0 | - | 4.20 | 32,802 |
| History of France | 0 | - | 4.59 | 57,231 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,453 |
| Greece Country Quiz | 0 | - | 4.74 | 66,348 |
| Italy Country Quiz | 0 | - | 4.77 | 123,561 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,813 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,555 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,622 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,526 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,992 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| Spain Country Quiz | 0 | - | 4.44 | 128,727 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,432 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,124 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,761 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,359 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,734 |
| Counties of Wales | 0 | - | 4.63 | 39,362 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,042 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,266 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,190 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,774 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,254 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,506 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,795 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,966 |
| Russia Country Quiz | 0 | - | 4.83 | 114,653 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,443 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,402 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,824 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,475 |
| History of Ireland | 0 | - | 4.39 | 31,264 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,396 |
| Canary Islands | 0 | - | 4.62 | 17,490 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,214 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,801 |
| British Spellings | 0 | - | 4.06 | 99,493 |
| British Groups of Things | 0 | - | 4.25 | 82,901 |
| British Acronyms | 0 | - | 4.40 | 45,837 |
| UK Immigration by Country | 0 | - | 4.94 | 141,103 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,051 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,096 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,348 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,916 |
| Geography of Scotland | 0 | - | 4.63 | 21,645 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,205 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,886 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,706,124 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,009 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,341 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,168 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,670 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,484 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,480 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,587 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,306 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,380 |
| Countries that Border Poland | 0 | - | 4.99 | 172,549 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,948 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,365 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,383 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,917 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,869 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,620 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,841 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,606 |
| 20 Questions About France | 0 | - | 4.11 | 32,427 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,949 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,258 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,498 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,626 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,208 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,830 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,699 |
| Counties of Ireland | 0 | - | 4.92 | 195,896 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,994 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,269 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,780 |
