| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,776 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,492 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,991 |
| Counties of England | 0 | - | 4.97 | 804,020 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,505 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,521 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,935 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,966 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,990 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,705 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,785 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,953 |
| States of Germany | 0 | - | 4.95 | 154,877 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,788 |
| Regions of Italy | 0 | - | 4.92 | 77,232 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,897 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,537 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,876 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,600 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,343 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,804 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,981 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,963 |
| Departments of France | 0 | - | 4.93 | 55,359 |
| Germany Country Quiz | 0 | - | 4.82 | 159,020 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,206 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,391 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,191 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,773 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,594 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,004 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,001 |
| England or Wales? | 0 | - | 4.94 | 46,011 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,306 |
| History of Austria | 0 | - | 4.70 | 17,991 |
| Name the English Monarchs | 0 | - | 4.91 | 507,221 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,486 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,352 |
| Geography of the British Empire | 0 | - | 4.48 | 39,866 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,751 |
| Name that Greek Letter | 0 | - | 4.93 | 325,202 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,176 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,403 |
| Malta Country Quiz | 0 | - | 4.81 | 31,253 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,149 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,508 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,432 |
| The Only European Country ... | 0 | - | 4.91 | 219,497 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,781 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,275 |
| The Trojan War | 0 | - | 4.83 | 40,040 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,669 |
| Roman Emperors | 0 | - | 4.95 | 121,384 |
| History of The Netherlands | 0 | - | 4.46 | 17,570 |
| Medieval English History | 0 | - | 4.53 | 43,683 |
| History of Russia Quiz | 0 | - | 4.47 | 32,020 |
| French History Multiple Choice | 0 | - | 4.55 | 33,274 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,815 |
| History of Italy | 0 | - | 4.55 | 32,178 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,842 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,463 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,139 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,348 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,101 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,839 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,896 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,741 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,493 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,187 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,890 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,098 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,387 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,338 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,894 |
| Slavic Countries | 0 | - | 4.96 | 112,481 |
| Regions of France | 0 | - | 4.70 | 122,345 |
| France Immigration by Country | 0 | - | 4.70 | 76,995 |
| History of Germany | 0 | - | 4.39 | 52,995 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,562 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,282 |
| Ancient Greek Words | 0 | - | 4.93 | 112,623 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,895 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,428 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,930 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,833 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,834 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,252 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,465 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,357 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,080 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,963 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,692 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,806 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,594 |
| Monarchies of Europe | 0 | - | 4.90 | 99,009 |
| European Countries with One Border | 0 | - | 4.97 | 183,995 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,701 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,046 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,871 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,561 |
| French Inventions | 0 | - | 4.10 | 13,931 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,562 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,279 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,587 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,755 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,246 |
| History of Scotland | 0 | - | 4.51 | 21,188 |
| Champions League Winners | 0 | - | 4.92 | 1,017,619 |
| Countries That Border Russia | 0 | - | 4.98 | 464,829 |
| Austria Country Quiz | 0 | - | 4.57 | 60,105 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,348 |
| France Country Quiz | 0 | - | 4.70 | 135,772 |
| Geography of the French Empire | 0 | - | 4.45 | 27,229 |
| The French Revolution | 0 | - | 4.47 | 24,164 |
| Countries Bordering France | 0 | - | 4.83 | 405,268 |
| Kings of France Quiz | 0 | - | 4.21 | 32,960 |
| History of France | 0 | - | 4.61 | 57,708 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,573 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,161 |
| Greece Country Quiz | 0 | - | 4.74 | 66,695 |
| Italy Country Quiz | 0 | - | 4.77 | 124,181 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,978 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,719 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,023 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,785 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,432 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,396 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Spain Country Quiz | 0 | - | 4.44 | 129,362 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,703 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,422 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,879 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,485 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,860 |
| Counties of Wales | 0 | - | 4.63 | 39,663 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,032 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,919 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,241 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,258 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,191 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,255 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,088 |
| Russia Country Quiz | 0 | - | 4.83 | 115,418 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,819 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,622 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,004 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,154 |
| History of Ireland | 0 | - | 4.39 | 31,475 |
| Countries Italy Declared War On | 0 | - | 4.74 | 47,903 |
| Canary Islands | 0 | - | 4.62 | 17,548 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,075 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,141 |
| British Spellings | 0 | - | 4.06 | 99,623 |
| British Groups of Things | 0 | - | 4.26 | 83,038 |
| British Acronyms | 0 | - | 4.40 | 45,958 |
| UK Immigration by Country | 0 | - | 4.94 | 141,867 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,222 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,837 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,197 |
| Geography of Scotland | 0 | - | 4.63 | 21,790 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,280 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,402 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,674 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,139 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,939 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,954 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,393 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,812 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,720 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,035 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,239 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,761 |
| Countries that Border Poland | 0 | - | 4.99 | 173,318 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,339 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,180 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,079 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,084 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,051 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,187 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,203 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,020 |
| 20 Questions About France | 0 | - | 4.11 | 32,484 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,204 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,548 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,176 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,817 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,033 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,692 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,415 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,887 |
| Counties of Ireland | 0 | - | 4.92 | 197,620 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,344 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,600 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,367 |
