| Regions of Italy | 0 | - | 4.92 | 77,276 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,451 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,785 |
| England or Wales? | 0 | - | 4.94 | 46,062 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,811 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,531 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,035 |
| French History Multiple Choice | 0 | - | 4.55 | 33,280 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,359 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,106 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,513 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,704 |
| Roman Emperors | 0 | - | 4.95 | 121,458 |
| Counties of England | 0 | - | 4.97 | 804,404 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,622 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,581 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,110 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,033 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,036 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,828 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,991 |
| States of Germany | 0 | - | 4.95 | 154,964 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,821 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,532 |
| History of Italy | 0 | - | 4.55 | 32,186 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,927 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,609 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,907 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,654 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,883 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,382 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,831 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,994 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,012 |
| Departments of France | 0 | - | 4.93 | 55,417 |
| Germany Country Quiz | 0 | - | 4.82 | 159,084 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,250 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,246 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,498 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,628 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,639 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,057 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,062 |
| Name the English Monarchs | 0 | - | 4.91 | 507,456 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,434 |
| Italy Country Quiz | 0 | - | 4.77 | 124,236 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,378 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,683 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,499 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,492 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,392 |
| Geography of the British Empire | 0 | - | 4.48 | 39,882 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,285 |
| The Trojan War | 0 | - | 4.83 | 40,089 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,076 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,069 |
| Name that Greek Letter | 0 | - | 4.93 | 325,331 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,260 |
| Figures from Greek Mythology | 0 | - | 4.91 | 192,866 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,183 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,294 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,301 |
| Medieval English History | 0 | - | 4.53 | 43,691 |
| Malta Country Quiz | 0 | - | 4.81 | 31,267 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,281 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,625 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,524 |
| The Only European Country ... | 0 | - | 4.91 | 219,646 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,861 |
| History of Russia Quiz | 0 | - | 4.47 | 32,028 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,965 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,399 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,270 |
| Roman Names for Places | 0 | - | 4.62 | 58,795 |
| Byzantine History | 0 | - | 4.91 | 29,055 |
| Byzantine Emperors | 0 | - | 4.93 | 14,665 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,855 |
| History of The Netherlands | 0 | - | 4.46 | 17,572 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,150 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,308 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,261,714 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,360 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,799 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,557 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,316 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,917 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,222 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,576 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,392 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,928 |
| Slavic Countries | 0 | - | 4.96 | 112,524 |
| History of Germany | 0 | - | 4.39 | 53,004 |
| Ancient Greek Words | 0 | - | 4.93 | 112,687 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,836 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,256 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,763 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,362 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 69,225 |
| Regions of France | 0 | - | 4.70 | 122,424 |
| France Immigration by Country | 0 | - | 4.70 | 77,017 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,615 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,595 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,852 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,744 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,942 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,478 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,885 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,968 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,857 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,181 |
| Embarrassing Chapters in British History | 0 | - | 4.30 | 32,410 |
| History of Scotland | 0 | - | 4.51 | 21,195 |
| Champions League Winners | 0 | - | 4.92 | 1,018,180 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,120 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,105 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 97,008 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,750 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,894 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,638 |
| Monarchies of Europe | 0 | - | 4.90 | 99,049 |
| European Countries with One Border | 0 | - | 4.97 | 184,049 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,769 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,100 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,964 |
| Countries That Border Russia | 0 | - | 4.98 | 464,961 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,594 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Austria Country Quiz | 0 | - | 4.57 | 60,123 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,381 |
| France Country Quiz | 0 | - | 4.70 | 135,831 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| Countries Bordering France | 0 | - | 4.83 | 405,399 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Kings of France Quiz | 0 | - | 4.22 | 32,972 |
| History of France | 0 | - | 4.61 | 57,735 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,578 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,280 |
| Greece Country Quiz | 0 | - | 4.74 | 66,718 |
| Italian Inventions | 0 | - | 3.81 | 18,483 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,278 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,992 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,727 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,058 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,811 |
| The Vikings! | 0 | - | 4.46 | 28,425 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,443 |
| Sweden True or False? | 0 | - | 4.53 | 40,591 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,425 |
| The Portuguese Empire | 0 | - | 4.58 | 12,118 |
| Spain Country Quiz | 0 | - | 4.44 | 129,420 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,731 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,310 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,470 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,885 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,651 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Counties of Wales | 0 | - | 4.63 | 39,684 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,085 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,973 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,383 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,362 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,304 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,448 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,143 |
| Russia Country Quiz | 0 | - | 4.83 | 115,466 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,843 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,651 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,051 |
| History of Ireland | 0 | - | 4.39 | 31,496 |
| Italian Foods | 0 | - | 4.30 | 73,402 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,197 |
| Canary Islands | 0 | - | 4.62 | 17,550 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,135 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,168 |
| British Spellings | 0 | - | 4.06 | 99,631 |
| British Groups of Things | 0 | - | 4.26 | 83,044 |
| British Acronyms | 0 | - | 4.40 | 45,979 |
| UK Immigration by Country | 0 | - | 4.94 | 141,914 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,132 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,289 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,868 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,223 |
| Geography of Scotland | 0 | - | 4.63 | 21,826 |
| Former Dominions of the British Empire | 0 | - | 4.27 | 24,284 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,507 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,718 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,688 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,029 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,407 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,830 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,186 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,068 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,293 |
| Random Point on Land to European Country | 0 | - | 4.94 | 78,240 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,789 |
