| European Countries by First 2 Letters | 0 | - | 4.95 | 530,201 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,417 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,140 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,237 |
| States of Germany | 0 | - | 4.95 | 152,961 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,204 |
| Regions of Italy | 0 | - | 4.92 | 76,118 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,348 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,220 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,337 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,730 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,266 |
| Official European Union Languages | 0 | - | 4.97 | 238,788 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,039 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,719 |
| The Vikings! | 0 | - | 4.46 | 28,360 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,187 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,063 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,882 |
| History of Italy | 0 | - | 4.55 | 32,032 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,892 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,705 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,282 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,412 |
| Celtic Nations | 0 | - | 4.69 | 46,974 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,484 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,990 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,540 |
| Counties of England | 0 | - | 4.97 | 798,198 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,482 |
| Regions of France | 0 | - | 4.72 | 121,079 |
| France Immigration by Country | 0 | - | 4.70 | 76,625 |
| Famous Germans | 0 | - | 4.50 | 55,450 |
| German Groups of Things | 0 | - | 4.46 | 38,500 |
| Germany True or False? | 0 | - | 4.61 | 48,860 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,102 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,661 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,459 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,317 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,366 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,292 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,545 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,811 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,186 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,765 |
| History of Austria | 0 | - | 4.70 | 17,888 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,691 |
| Geography of the French Empire | 0 | - | 4.45 | 27,145 |
| The French Revolution | 0 | - | 4.47 | 24,038 |
| France Multiple Choice | 0 | - | 4.39 | 40,757 |
| History of France | 0 | - | 4.59 | 57,202 |
| States of Germany Map Quiz | 0 | - | 4.91 | 133,044 |
| The Portuguese Empire | 0 | - | 4.58 | 12,079 |
| American to British Word Translation | 0 | - | 4.14 | 139,232 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,930 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,094 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,013 |
| Champions League Winners | 0 | - | 4.91 | 1,008,846 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,701 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,192 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,442 |
| Departments of France | 0 | - | 4.93 | 54,349 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,590 |
| England or Wales? | 0 | - | 4.94 | 45,759 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,820 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,628 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,814 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,414 |
| Slavic Languages | 0 | - | 4.68 | 54,432 |
| Famous French People | 0 | - | 4.07 | 35,762 |
| Word Chain - France | 0 | - | 4.38 | 42,813 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,643 |
| Italian Foods | 0 | - | 4.30 | 72,881 |
| The Mafia Quiz | 0 | - | 4.46 | 23,358 |
| History of The Netherlands | 0 | - | 4.46 | 17,465 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,501 |
| Canary Islands | 0 | - | 4.62 | 17,488 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,786 |
| British Spellings | 0 | - | 4.06 | 99,486 |
| British Groups of Things | 0 | - | 4.25 | 82,895 |
| British Acronyms | 0 | - | 4.40 | 45,827 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,049 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,898 |
| Geography of Scotland | 0 | - | 4.63 | 21,643 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,572 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,830 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,495 |
| Geography of Germany | 0 | - | 4.35 | 17,200 |
| History of Germany | 0 | - | 4.39 | 52,876 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,394 |
| Name that Greek Letter | 0 | - | 4.93 | 324,062 |
| History of Spain | 0 | - | 4.23 | 21,108 |
| Languages of Spain | 0 | - | 4.36 | 23,343 |
| British to American Word Translation | 0 | - | 3.74 | 255,139 |
| British Foods by Description | 0 | - | 3.94 | 48,336 |
| British and American Word Differences | 0 | - | 2.63 | 46,891 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,607 |
| Bridges of London | 0 | - | 4.17 | 10,118 |
| British Sport Trivia | 0 | - | 4.37 | 20,476 |
| Famous Welsh People | 0 | - | 4.31 | 11,546 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,477 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,251 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,762 |
| Movies Set in France | 0 | - | 4.26 | 13,126 |
| French Inventions | 0 | - | 4.08 | 13,902 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| Word Chain - Germany | 0 | - | 4.31 | 22,603 |
| The Trojan War | 0 | - | 4.83 | 39,776 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,079 |
| Word Chain - Italy | 0 | - | 4.07 | 23,175 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,120 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,610 |
| Roman Emperors | 0 | - | 4.95 | 120,280 |
| Famous Nordic People | 0 | - | 4.34 | 20,155 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,790 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,620 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,924 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,351 |
| 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 | 279,461 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,512 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,949 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,204 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,825 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,666 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,886 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,678 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,975 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,823 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,117 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,583 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,202 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,329 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,990 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,274 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,276 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,713 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,518 |
| Capitals of French Regions | 0 | - | 4.45 | 16,096 |
| Capitals of German States | 0 | - | 4.74 | 28,977 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,379 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,545 |
| Ancient Greek Words | 0 | - | 4.93 | 111,813 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,717 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,941 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,516 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,372 |
| European Physical Geography | 0 | - | 4.26 | 33,531 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,992 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,667 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,225 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,119 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,354 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,695 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,384 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,604 |
| Geography of the British Empire | 0 | - | 4.48 | 39,726 |
| Champions League Top 4 | 0 | - | 4.77 | 137,033 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,184 |
| Asia Map Quiz | 0 | - | 4.99 | 918,544 |
| Countries of Africa | 0 | - | 5.00 | 2,542,196 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,010 |
| African East Coast | 0 | - | 4.96 | 96,195 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,054 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,834 |
| Australia Map Quiz | 0 | - | 4.95 | 344,926 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,093 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,630 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,714 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,385 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,842 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,918 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,243 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,177 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,868 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,655 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,291 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,833 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,008 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,725 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,284 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,540 |
| European Geography A-Z | 0 | - | 4.29 | 49,339 |
| Country Codes of Europe | 0 | - | 3.43 | 13,741 |
| The Only European Country ... | 0 | - | 4.91 | 217,163 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,434 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,248 |
| Austria... or Australia? | 0 | - | 4.68 | 104,451 |
| Presidents of France | 0 | - | 4.25 | 24,185 |
| French Foods | 0 | - | 4.00 | 27,714 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,050 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,939 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,328 |
| Italian Inventions | 0 | - | 3.81 | 18,448 |
