| European Countries by First 2 Letters | 0 | - | 4.95 | 530,122 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,408 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,132 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,151 |
| States of Germany | 0 | - | 4.95 | 152,922 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,183 |
| Regions of Italy | 0 | - | 4.92 | 76,103 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,316 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,198 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,316 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,728 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,252 |
| Official European Union Languages | 0 | - | 4.97 | 238,734 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,014 |
| Regions of France | 0 | - | 4.72 | 121,032 |
| France Immigration by Country | 0 | - | 4.70 | 76,612 |
| Departments of France | 0 | - | 4.93 | 54,308 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,655 |
| Geography of the French Empire | 0 | - | 4.45 | 27,141 |
| The French Revolution | 0 | - | 4.47 | 24,033 |
| France Multiple Choice | 0 | - | 4.39 | 40,754 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,820 |
| History of Paris | 0 | - | 4.24 | 13,656 |
| History of France | 0 | - | 4.59 | 57,174 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,047 |
| Famous French People | 0 | - | 4.07 | 35,718 |
| Word Chain - France | 0 | - | 4.38 | 42,809 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,876 |
| History of Italy | 0 | - | 4.55 | 32,029 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,872 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,703 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,275 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,410 |
| Celtic Nations | 0 | - | 4.69 | 46,969 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,469 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,947 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,476 |
| Capitals of French Regions | 0 | - | 4.45 | 16,094 |
| Counties of England | 0 | - | 4.97 | 798,057 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,270 |
| Famous Germans | 0 | - | 4.50 | 55,403 |
| German Groups of Things | 0 | - | 4.46 | 38,499 |
| Germany True or False? | 0 | - | 4.61 | 48,847 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,086 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,619 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,449 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,302 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,354 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,262 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,536 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,781 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,160 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,688 |
| History of Austria | 0 | - | 4.70 | 17,883 |
| Movies Set in France | 0 | - | 4.26 | 13,124 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,663 |
| French Inventions | 0 | - | 4.08 | 13,901 |
| States of Germany Map Quiz | 0 | - | 4.91 | 133,017 |
| The Vikings! | 0 | - | 4.46 | 28,358 |
| The Portuguese Empire | 0 | - | 4.58 | 12,077 |
| American to British Word Translation | 0 | - | 4.14 | 139,213 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,928 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,079 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,932 |
| Champions League Winners | 0 | - | 4.91 | 1,008,563 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,642 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,156 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,390 |
| Presidents of France | 0 | - | 4.25 | 24,177 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,576 |
| England or Wales? | 0 | - | 4.94 | 45,755 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,755 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,627 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,667 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,798 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,352 |
| Slavic Languages | 0 | - | 4.68 | 54,422 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,640 |
| Italian Foods | 0 | - | 4.30 | 72,864 |
| The Mafia Quiz | 0 | - | 4.46 | 23,351 |
| History of The Netherlands | 0 | - | 4.46 | 17,459 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,499 |
| Canary Islands | 0 | - | 4.62 | 17,486 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,779 |
| British Spellings | 0 | - | 4.06 | 99,481 |
| British Groups of Things | 0 | - | 4.25 | 82,893 |
| British Acronyms | 0 | - | 4.40 | 45,822 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,047 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,887 |
| Geography of Scotland | 0 | - | 4.63 | 21,639 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,555 |
| French Foods | 0 | - | 4.00 | 27,712 |
| France A-Z | 0 | - | 4.16 | 38,234 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,493 |
| Geography of Germany | 0 | - | 4.35 | 17,200 |
| History of Germany | 0 | - | 4.39 | 52,872 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,275 |
| Name that Greek Letter | 0 | - | 4.93 | 324,030 |
| History of Spain | 0 | - | 4.23 | 21,107 |
| Languages of Spain | 0 | - | 4.36 | 23,340 |
| British to American Word Translation | 0 | - | 3.74 | 255,130 |
| British Foods by Description | 0 | - | 3.94 | 48,335 |
| British and American Word Differences | 0 | - | 2.63 | 46,887 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,604 |
| Bridges of London | 0 | - | 4.17 | 10,118 |
| British Sport Trivia | 0 | - | 4.37 | 20,474 |
| Famous Welsh People | 0 | - | 4.31 | 11,536 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,447 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,229 |
| History of Russia Quiz | 0 | - | 4.47 | 31,941 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,762 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,248 |
| Word Chain - Germany | 0 | - | 4.31 | 22,601 |
| The Trojan War | 0 | - | 4.83 | 39,772 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,050 |
| Word Chain - Italy | 0 | - | 4.07 | 23,174 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,119 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,602 |
| Roman Emperors | 0 | - | 4.95 | 120,249 |
| Famous Nordic People | 0 | - | 4.34 | 20,150 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,619 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,916 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,349 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,538 |
| People on Money - England | 0 | - | 4.29 | 16,621 |
| Name a Valid English City | 0 | - | 4.19 | 16,738 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,439 |
| Australian Capitals | 0 | - | 4.92 | 62,737 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,487 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,904 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,180 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,805 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,656 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,869 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,671 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,967 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,813 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,107 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,570 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,550 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,321 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,983 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,270 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,272 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,704 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,512 |
| Kings of France Quiz | 0 | - | 4.20 | 32,785 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,994 |
| Capitals of German States | 0 | - | 4.74 | 28,976 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,369 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,467 |
| Ancient Greek Words | 0 | - | 4.93 | 111,780 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,625 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,919 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,176 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,274 |
| European Physical Geography | 0 | - | 4.26 | 33,526 |
| Geography of Russia | 0 | - | 4.57 | 21,548 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,991 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 33,783 |
| Tour de France Winners | 0 | - | 4.27 | 15,396 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,132 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,612 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,217 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,179 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,104 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,351 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,691 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,379 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,593 |
| Geography of the British Empire | 0 | - | 4.48 | 39,723 |
| Champions League Top 4 | 0 | - | 4.77 | 136,962 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,083 |
| Asia Map Quiz | 0 | - | 4.99 | 918,248 |
| Countries of Africa | 0 | - | 5.00 | 2,541,519 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,992 |
| African East Coast | 0 | - | 4.96 | 96,169 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,042 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,822 |
| Australia Map Quiz | 0 | - | 4.95 | 344,898 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,655 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,580 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,707 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,336 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,802 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,901 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,135 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,163 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,846 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,646 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,283 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,828 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,003 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,716 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,279 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,492 |
| European Geography A-Z | 0 | - | 4.29 | 49,329 |
| Country Codes of Europe | 0 | - | 3.43 | 13,739 |
| The Only European Country ... | 0 | - | 4.91 | 217,091 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,400 |
