| European Countries by First 2 Letters | 0 | - | 4.95 | 530,443 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,451 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,171 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,439 |
| States of Germany | 0 | - | 4.95 | 153,094 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,253 |
| Regions of Italy | 0 | - | 4.92 | 76,201 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,398 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,329 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,380 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,740 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,304 |
| Official European Union Languages | 0 | - | 4.97 | 238,873 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,099 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,924 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,091 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,900 |
| History of Italy | 0 | - | 4.55 | 32,047 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,932 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,716 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,292 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,420 |
| Celtic Nations | 0 | - | 4.69 | 46,987 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,517 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,144 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,784 |
| Counties of England | 0 | - | 4.97 | 798,609 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,943 |
| Regions of France | 0 | - | 4.72 | 121,170 |
| France Immigration by Country | 0 | - | 4.70 | 76,661 |
| Famous Germans | 0 | - | 4.50 | 55,510 |
| German Groups of Things | 0 | - | 4.46 | 38,515 |
| Germany True or False? | 0 | - | 4.61 | 48,877 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,131 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,742 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,477 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,335 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,416 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,355 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,565 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 85,017 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,250 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,928 |
| History of Austria | 0 | - | 4.70 | 17,900 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,767 |
| Geography of the French Empire | 0 | - | 4.45 | 27,151 |
| The French Revolution | 0 | - | 4.47 | 24,054 |
| France Multiple Choice | 0 | - | 4.39 | 40,769 |
| History of France | 0 | - | 4.59 | 57,249 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,116 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,204 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| American to British Word Translation | 0 | - | 4.14 | 139,280 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,941 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,129 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,106 |
| Champions League Winners | 0 | - | 4.91 | 1,009,498 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,830 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,310 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,563 |
| Departments of France | 0 | - | 4.93 | 54,412 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,609 |
| England or Wales? | 0 | - | 4.94 | 45,784 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,938 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,636 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,671 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,853 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,530 |
| Slavic Languages | 0 | - | 4.68 | 54,459 |
| Famous French People | 0 | - | 4.07 | 35,821 |
| Word Chain - France | 0 | - | 4.38 | 42,832 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,655 |
| Italian Foods | 0 | - | 4.30 | 72,917 |
| The Mafia Quiz | 0 | - | 4.46 | 23,365 |
| History of The Netherlands | 0 | - | 4.46 | 17,475 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,511 |
| Canary Islands | 0 | - | 4.62 | 17,490 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,811 |
| British Spellings | 0 | - | 4.06 | 99,500 |
| British Groups of Things | 0 | - | 4.25 | 82,904 |
| British Acronyms | 0 | - | 4.40 | 45,844 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,052 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,929 |
| Geography of Scotland | 0 | - | 4.63 | 21,652 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,602 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,845 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,502 |
| Geography of Germany | 0 | - | 4.35 | 17,203 |
| History of Germany | 0 | - | 4.39 | 52,889 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,677 |
| Name that Greek Letter | 0 | - | 4.93 | 324,114 |
| History of Spain | 0 | - | 4.23 | 21,113 |
| Languages of Spain | 0 | - | 4.36 | 23,347 |
| British to American Word Translation | 0 | - | 3.74 | 255,155 |
| British Foods by Description | 0 | - | 3.94 | 48,339 |
| British and American Word Differences | 0 | - | 2.63 | 46,897 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,609 |
| Bridges of London | 0 | - | 4.17 | 10,119 |
| British Sport Trivia | 0 | - | 4.37 | 20,483 |
| Famous Welsh People | 0 | - | 4.31 | 11,561 |
| Malta Country Quiz | 0 | - | 4.81 | 31,108 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,555 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,310 |
| History of Russia Quiz | 0 | - | 4.47 | 31,945 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,770 |
| Movies Set in France | 0 | - | 4.26 | 13,130 |
| French Inventions | 0 | - | 4.10 | 13,905 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| Word Chain - Germany | 0 | - | 4.31 | 22,612 |
| The Trojan War | 0 | - | 4.83 | 39,790 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,191 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,123 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,640 |
| Roman Emperors | 0 | - | 4.95 | 120,343 |
| Famous Nordic People | 0 | - | 4.34 | 20,161 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,799 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,947 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,356 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,544 |
| People on Money - England | 0 | - | 4.29 | 16,623 |
| Name a Valid English City | 0 | - | 4.19 | 16,745 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,593 |
| Australian Capitals | 0 | - | 4.92 | 62,746 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,808 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,218 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,582 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,152 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,883 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,167 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,833 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,115 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,930 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,217 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,740 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,796 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,344 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,002 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,290 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,287 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,820 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,539 |
| Capitals of French Regions | 0 | - | 4.45 | 16,102 |
| Capitals of German States | 0 | - | 4.74 | 28,984 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,391 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,743 |
| Ancient Greek Words | 0 | - | 4.93 | 111,872 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,903 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,036 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,271 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,644 |
| European Physical Geography | 0 | - | 4.26 | 33,539 |
| Geography of Russia | 0 | - | 4.57 | 21,552 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,005 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,861 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,264 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,143 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,365 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,711 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,398 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,643 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Champions League Top 4 | 0 | - | 4.77 | 137,193 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,539 |
| Asia Map Quiz | 0 | - | 4.99 | 919,179 |
| Countries of Africa | 0 | - | 5.00 | 2,543,802 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,068 |
| African East Coast | 0 | - | 4.96 | 96,255 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,105 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,857 |
| Australia Map Quiz | 0 | - | 4.95 | 345,005 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,030 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,737 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,730 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,498 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,966 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,142 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,505 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,364 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,047 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,805 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,441 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,935 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,089 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,742 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,375 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,629 |
| European Geography A-Z | 0 | - | 4.29 | 49,354 |
| Country Codes of Europe | 0 | - | 3.43 | 13,746 |
| The Only European Country ... | 0 | - | 4.91 | 217,313 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,520 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,286 |
| Austria... or Australia? | 0 | - | 4.68 | 104,487 |
| Presidents of France | 0 | - | 4.25 | 24,199 |
| French Foods | 0 | - | 4.00 | 27,721 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,066 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,945 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,637 |
