| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,902 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,512 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,080 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,990 |
| Name that Greek Letter | 0 | - | 4.93 | 323,059 |
| Counties of England | 0 | - | 4.97 | 794,610 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,868 |
| The Trojan War | 0 | - | 4.83 | 39,641 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,514 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,863 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,103 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,259 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,691 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,581 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,110 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,528 |
| States of Germany | 0 | - | 4.96 | 151,840 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,865 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,931 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,489 |
| Regions of Italy | 0 | - | 4.92 | 75,527 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,815 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,603 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,981 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,530 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,862 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,385 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,415 |
| Departments of France | 0 | - | 4.93 | 53,741 |
| Germany Country Quiz | 0 | - | 4.82 | 157,549 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,851 |
| Italy Country Quiz | 0 | - | 4.82 | 123,165 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,085 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,798 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,513 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,647 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,348 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,195 |
| England or Wales? | 0 | - | 4.94 | 45,592 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,439 |
| Greece Country Quiz | 0 | - | 4.74 | 66,120 |
| Name the English Monarchs | 0 | - | 4.91 | 501,368 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,303 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,284 |
| Geography of the British Empire | 0 | - | 4.48 | 39,628 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,610 |
| Malta Country Quiz | 0 | - | 4.81 | 30,999 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,863 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,490 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,895 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,793 |
| The Only European Country ... | 0 | - | 4.91 | 215,933 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,745 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,402 |
| Roman Emperors | 0 | - | 4.95 | 119,639 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Medieval English History | 0 | - | 4.53 | 43,454 |
| Recently Independent Countries | 0 | - | 4.98 | 158,972 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| French History Multiple Choice | 0 | - | 4.55 | 32,997 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,447 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,601 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,608 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,158 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,786 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,097 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,923 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,183 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,057 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,610 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,966 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,401 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,949 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,123 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,962 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,946 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,521 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,979 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,707 |
| Slavic Countries | 0 | - | 4.96 | 111,476 |
| Regions of France | 0 | - | 4.75 | 120,377 |
| France Immigration by Country | 0 | - | 4.70 | 76,389 |
| History of Germany | 0 | - | 4.39 | 52,777 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,856 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,478 |
| Ancient Greek Words | 0 | - | 4.93 | 111,321 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,217 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,232 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,057 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,579 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,735 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,132 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,099 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,437 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,652 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,218 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,885 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,479 |
| Monarchies of Europe | 0 | - | 4.90 | 97,929 |
| European Countries with One Border | 0 | - | 4.97 | 182,484 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,288 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,905 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,303 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,712 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,524 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,114 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,086 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,103 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,991 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,971 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,998 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,221 |
| History of Scotland | 0 | - | 4.51 | 21,072 |
| Champions League Winners | 0 | - | 4.92 | 1,003,551 |
| Countries That Border Russia | 0 | - | 4.98 | 461,047 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,630 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,644 |
| France Country Quiz | 0 | - | 4.70 | 134,733 |
| Geography of the French Empire | 0 | - | 4.45 | 27,020 |
| The French Revolution | 0 | - | 4.46 | 23,899 |
| Countries Bordering France | 0 | - | 4.83 | 401,819 |
| Kings of France Quiz | 0 | - | 4.20 | 32,680 |
| History of France | 0 | - | 4.59 | 56,812 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,460 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,555 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,475 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,688 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,431 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,369 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,369 |
| The Vikings! | 0 | - | 4.46 | 28,318 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,031 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,730 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| Spain Country Quiz | 0 | - | 4.45 | 128,277 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,245 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,556 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,676 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,295 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,657 |
| Counties of Wales | 0 | - | 4.63 | 39,185 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,592 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,855 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,765 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,536 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,248 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,629 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,851 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,308 |
| Russia Country Quiz | 0 | - | 4.85 | 114,257 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,224 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,283 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,397 |
| History of Ireland | 0 | - | 4.39 | 31,102 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,240 |
| Canary Islands | 0 | - | 4.62 | 17,459 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,690 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,585 |
| British Spellings | 0 | - | 4.06 | 99,401 |
| British Groups of Things | 0 | - | 4.25 | 82,830 |
| British Acronyms | 0 | - | 4.39 | 45,753 |
| UK Immigration by Country | 0 | - | 4.94 | 140,642 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,015 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,406 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,000 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,653 |
| Geography of Scotland | 0 | - | 4.63 | 21,588 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,160 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,701 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,339 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,483 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,625 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,036 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,269 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,333 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,336 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,745 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,149 |
| Countries that Border Poland | 0 | - | 4.99 | 172,032 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,708 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,175 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,081 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,793 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,733 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,237 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,709 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,176 |
| 20 Questions About France | 0 | - | 4.11 | 32,390 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,781 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,084 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,494 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,044 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,858 |
| Counties of Ireland | 0 | - | 4.92 | 194,589 |
