| European Countries by First 2 Letters | 0 | - | 4.95 | 532,089 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,653 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,384 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,202 |
| States of Germany | 0 | - | 4.95 | 154,194 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,604 |
| Regions of Italy | 0 | - | 4.92 | 76,886 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,717 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,140 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,673 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,817 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,626 |
| Official European Union Languages | 0 | - | 4.97 | 239,570 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,528 |
| Regions of France | 0 | - | 4.70 | 121,879 |
| France Immigration by Country | 0 | - | 4.70 | 76,869 |
| Departments of France | 0 | - | 4.93 | 54,953 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,470 |
| Geography of the French Empire | 0 | - | 4.45 | 27,202 |
| The French Revolution | 0 | - | 4.47 | 24,126 |
| France Multiple Choice | 0 | - | 4.39 | 40,824 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,034 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,033 |
| History of France | 0 | - | 4.61 | 57,526 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,259 |
| Famous French People | 0 | - | 4.07 | 36,040 |
| Word Chain - France | 0 | - | 4.38 | 42,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,124 |
| Name that Greek Letter | 0 | - | 4.93 | 324,802 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,021 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,716 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,631 |
| History of Italy | 0 | - | 4.55 | 32,122 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,260 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,796 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,405 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,484 |
| Celtic Nations | 0 | - | 4.61 | 47,074 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,432 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,941 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,412 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,281 |
| Capitals of French Regions | 0 | - | 4.45 | 16,160 |
| Languages of Spain | 0 | - | 4.36 | 23,415 |
| Counties of England | 0 | - | 4.97 | 801,910 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,723 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,963 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,053 |
| Famous Germans | 0 | - | 4.50 | 55,728 |
| German Groups of Things | 0 | - | 4.47 | 38,614 |
| Germany True or False? | 0 | - | 4.61 | 48,985 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,388 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,277 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,676 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,389 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,710 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,613 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,669 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,717 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,384 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,824 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,183 |
| History of Austria | 0 | - | 4.70 | 17,963 |
| Movies Set in France | 0 | - | 4.26 | 13,145 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,467 |
| French Inventions | 0 | - | 4.10 | 13,922 |
| History of Paris | 0 | - | 4.24 | 13,673 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,659 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,550 |
| The Vikings! | 0 | - | 4.46 | 28,397 |
| The Portuguese Empire | 0 | - | 4.58 | 12,097 |
| American to British Word Translation | 0 | - | 4.14 | 139,590 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,437 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,803 |
| Champions League Winners | 0 | - | 4.92 | 1,014,465 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,642 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,395 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,639 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,613 |
| Presidents of France | 0 | - | 4.25 | 24,315 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,719 |
| England or Wales? | 0 | - | 4.94 | 45,921 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,817 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,704 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,719 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,711 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,202 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 117,099 |
| Slavic Languages | 0 | - | 4.68 | 54,645 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,721 |
| Italian Foods | 0 | - | 4.30 | 73,185 |
| The Mafia Quiz | 0 | - | 4.46 | 23,423 |
| History of The Netherlands | 0 | - | 4.46 | 17,538 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,602 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,008 |
| British Spellings | 0 | - | 4.06 | 99,581 |
| British Groups of Things | 0 | - | 4.25 | 82,986 |
| British Acronyms | 0 | - | 4.40 | 45,915 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,095 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,073 |
| Geography of Scotland | 0 | - | 4.63 | 21,716 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,843 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,501 |
| French Foods | 0 | - | 4.00 | 27,761 |
| France A-Z | 0 | - | 4.16 | 38,322 |
| Geography of Germany | 0 | - | 4.35 | 17,255 |
| History of Germany | 0 | - | 4.39 | 52,961 |
| History of Spain | 0 | - | 4.23 | 21,151 |
| British to American Word Translation | 0 | - | 3.74 | 255,297 |
| British Foods by Description | 0 | - | 3.94 | 48,377 |
| British and American Word Differences | 0 | - | 2.63 | 46,920 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,203 |
| Bridges of London | 0 | - | 4.17 | 10,139 |
| British Sport Trivia | 0 | - | 4.39 | 20,517 |
| Famous Welsh People | 0 | - | 4.34 | 11,665 |
| Malta Country Quiz | 0 | - | 4.81 | 31,213 |
| History of Russia Quiz | 0 | - | 4.47 | 31,993 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,841 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,322 |
| Word Chain - Germany | 0 | - | 4.31 | 22,670 |
| The Trojan War | 0 | - | 4.83 | 39,948 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,792 |
| Word Chain - Italy | 0 | - | 4.07 | 23,210 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,156 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,529 |
| Roman Emperors | 0 | - | 4.95 | 121,015 |
| Famous Nordic People | 0 | - | 4.34 | 20,275 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,639 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,062 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,392 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,571 |
| People on Money - England | 0 | - | 4.29 | 16,642 |
| Name a Valid English City | 0 | - | 4.19 | 16,805 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,456 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,159 |
| Australian Capitals | 0 | - | 4.92 | 62,815 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,732 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,105 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,271 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,114 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,764 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,131 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,883 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,403 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,617 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,337 |
| Europe Map Quiz | 0 | - | 5.00 | 4,783,133 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,469 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,134 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,420 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,390 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,235 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,934 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,475 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,691 |
| Kings of France Quiz | 0 | - | 4.20 | 32,895 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,106 |
| Capitals of German States | 0 | - | 4.74 | 29,054 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,522 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,293 |
| Ancient Greek Words | 0 | - | 4.93 | 112,321 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,048 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,669 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,512 |
| European Physical Geography | 0 | - | 4.26 | 33,585 |
| Geography of Russia | 0 | - | 4.57 | 21,585 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,093 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 34,056 |
| Tour de France Winners | 0 | - | 4.27 | 15,494 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,166 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,344 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,455 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,339 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,304 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,431 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,785 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,443 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,163 |
| Geography of the British Empire | 0 | - | 4.48 | 39,828 |
| Champions League Top 4 | 0 | - | 4.77 | 138,574 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,500 |
| Asia Map Quiz | 0 | - | 4.99 | 923,941 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,360 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,991 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,344 |
| Australia Map Quiz | 0 | - | 4.95 | 345,924 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,128 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,080 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,635 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,873 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,480 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,933 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,834 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,147 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,938 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,645 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,334 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,969 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,386 |
