| Germany Multiple Choice | 0 | - | 4.84 | 54,370 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,030 |
| States of Germany | 0 | - | 4.95 | 152,710 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,081 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,696 |
| Regions of Italy | 0 | - | 4.92 | 75,947 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,218 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,035 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,245 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,711 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,177 |
| Official European Union Languages | 0 | - | 4.97 | 238,580 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,907 |
| Famous Germans | 0 | - | 4.50 | 55,312 |
| German Groups of Things | 0 | - | 4.46 | 38,483 |
| Germany True or False? | 0 | - | 4.61 | 48,820 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,330 |
| History of Austria | 0 | - | 4.70 | 17,866 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,003 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,852 |
| History of Italy | 0 | - | 4.55 | 31,981 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,812 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,669 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,243 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,389 |
| Celtic Nations | 0 | - | 4.69 | 46,957 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,396 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,696 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,045 |
| Capitals of German States | 0 | - | 4.74 | 28,964 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,348 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,488 |
| Geography of Germany | 0 | - | 4.35 | 17,190 |
| History of Germany | 0 | - | 4.39 | 52,833 |
| Counties of England | 0 | - | 4.97 | 797,275 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,280 |
| Regions of France | 0 | - | 4.72 | 120,886 |
| France Immigration by Country | 0 | - | 4.70 | 76,546 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,046 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,530 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,395 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,281 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,282 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,175 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,507 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,669 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,029 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,443 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,487 |
| Geography of the French Empire | 0 | - | 4.45 | 27,068 |
| The French Revolution | 0 | - | 4.47 | 23,956 |
| France Multiple Choice | 0 | - | 4.39 | 40,746 |
| History of France | 0 | - | 4.59 | 57,018 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,887 |
| Word Chain - Germany | 0 | - | 4.31 | 22,591 |
| The Vikings! | 0 | - | 4.46 | 28,349 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| American to British Word Translation | 0 | - | 4.14 | 139,108 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,907 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,028 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,733 |
| Champions League Winners | 0 | - | 4.92 | 1,007,226 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,391 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,941 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,205 |
| Departments of France | 0 | - | 4.93 | 54,187 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,559 |
| England or Wales? | 0 | - | 4.94 | 45,716 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,451 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,607 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,660 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,727 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,054 |
| Slavic Languages | 0 | - | 4.68 | 54,382 |
| Austria... or Australia? | 0 | - | 4.68 | 104,372 |
| Famous French People | 0 | - | 4.07 | 35,621 |
| Word Chain - France | 0 | - | 4.38 | 42,787 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,625 |
| Italian Foods | 0 | - | 4.30 | 72,807 |
| The Mafia Quiz | 0 | - | 4.46 | 23,329 |
| History of The Netherlands | 0 | - | 4.46 | 17,439 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,481 |
| Canary Islands | 0 | - | 4.62 | 17,483 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,726 |
| British Spellings | 0 | - | 4.06 | 99,463 |
| British Groups of Things | 0 | - | 4.25 | 82,879 |
| British Acronyms | 0 | - | 4.40 | 45,805 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,039 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,836 |
| Geography of Scotland | 0 | - | 4.63 | 21,624 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,477 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,782 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,711 |
| Name that Greek Letter | 0 | - | 4.93 | 323,570 |
| History of Spain | 0 | - | 4.23 | 21,093 |
| Languages of Spain | 0 | - | 4.36 | 23,326 |
| British to American Word Translation | 0 | - | 3.74 | 255,099 |
| British Foods by Description | 0 | - | 3.94 | 48,331 |
| British and American Word Differences | 0 | - | 2.63 | 46,884 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,597 |
| Bridges of London | 0 | - | 4.17 | 10,108 |
| British Sport Trivia | 0 | - | 4.37 | 20,465 |
| Famous Welsh People | 0 | - | 4.31 | 11,511 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,282 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,129 |
| History of Russia Quiz | 0 | - | 4.47 | 31,923 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,738 |
| Movies Set in France | 0 | - | 4.26 | 13,121 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| History of Paris | 0 | - | 4.24 | 13,653 |
| The Trojan War | 0 | - | 4.83 | 39,740 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,908 |
| Word Chain - Italy | 0 | - | 4.07 | 23,168 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,106 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,553 |
| Roman Emperors | 0 | - | 4.95 | 120,113 |
| Famous Nordic People | 0 | - | 4.34 | 20,133 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,615 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,875 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,345 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,533 |
| People on Money - England | 0 | - | 4.29 | 16,616 |
| Name a Valid English City | 0 | - | 4.19 | 16,731 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,242 |
| Australian Capitals | 0 | - | 4.92 | 62,729 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,383 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,571 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,102 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,729 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,599 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,762 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,613 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,918 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,766 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,058 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,505 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,359 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,289 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,957 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,239 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,245 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,657 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,466 |
| Capitals of French Regions | 0 | - | 4.45 | 16,081 |
| German Loan Words | 0 | - | 4.27 | 135,814 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,030 |
| Ancient Greek Words | 0 | - | 4.93 | 111,653 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,392 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,783 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,480 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,621 |
| European Physical Geography | 0 | - | 4.26 | 33,519 |
| Geography of Russia | 0 | - | 4.57 | 21,538 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,972 |
| German History A-Z | 0 | - | 4.49 | 24,622 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,292 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,165 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,147 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,053 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,675 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,356 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,512 |
| Geography of the British Empire | 0 | - | 4.48 | 39,687 |
| Champions League Top 4 | 0 | - | 4.77 | 136,595 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,481 |
| Asia Map Quiz | 0 | - | 4.99 | 917,258 |
| Countries of Africa | 0 | - | 5.00 | 2,538,414 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,877 |
| African East Coast | 0 | - | 4.96 | 96,102 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,951 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,743 |
| Australia Map Quiz | 0 | - | 4.95 | 344,706 |
| United States Map Quiz | 0 | - | 4.98 | 4,159,100 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,360 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,667 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,130 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,576 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,846 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,009 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,127 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,801 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,605 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,243 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,795 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,968 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,687 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,244 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,336 |
| European Geography A-Z | 0 | - | 4.29 | 49,280 |
| Country Codes of Europe | 0 | - | 3.43 | 13,738 |
| The Only European Country ... | 0 | - | 4.91 | 216,779 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,217 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,183 |
| Presidents of France | 0 | - | 4.25 | 24,153 |
| French Foods | 0 | - | 4.00 | 27,704 |
| Bundesliga Champions | 0 | - | 4.25 | 56,568 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,568 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,012 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,920 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,060 |
