| European Countries by First 2 Letters | 0 | - | 4.95 | 530,537 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,470 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,190 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,539 |
| States of Germany | 0 | - | 4.95 | 153,155 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,277 |
| Regions of Italy | 0 | - | 4.92 | 76,224 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,416 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,373 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,414 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,750 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,318 |
| Official European Union Languages | 0 | - | 4.97 | 238,903 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,125 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,005 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,106 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,913 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,948 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,719 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| Celtic Nations | 0 | - | 4.69 | 46,996 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,533 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,211 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,949 |
| Counties of England | 0 | - | 4.97 | 798,795 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,116 |
| Regions of France | 0 | - | 4.72 | 121,217 |
| France Immigration by Country | 0 | - | 4.70 | 76,677 |
| Famous Germans | 0 | - | 4.50 | 55,523 |
| German Groups of Things | 0 | - | 4.46 | 38,521 |
| Germany True or False? | 0 | - | 4.61 | 48,890 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,137 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,771 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,491 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,801 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,338 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,437 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,379 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,574 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,067 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,289 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,980 |
| History of Austria | 0 | - | 4.70 | 17,901 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,793 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,062 |
| France Multiple Choice | 0 | - | 4.39 | 40,772 |
| History of France | 0 | - | 4.59 | 57,267 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,146 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,209 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| American to British Word Translation | 0 | - | 4.14 | 139,300 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,943 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,150 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,142 |
| Champions League Winners | 0 | - | 4.92 | 1,009,767 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,886 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,349 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,610 |
| Departments of France | 0 | - | 4.93 | 54,451 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,612 |
| England or Wales? | 0 | - | 4.94 | 45,794 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,980 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,644 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,869 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,583 |
| Slavic Languages | 0 | - | 4.67 | 54,462 |
| Famous French People | 0 | - | 4.07 | 35,844 |
| Word Chain - France | 0 | - | 4.38 | 42,839 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,663 |
| Italian Foods | 0 | - | 4.30 | 72,931 |
| The Mafia Quiz | 0 | - | 4.46 | 23,369 |
| History of The Netherlands | 0 | - | 4.46 | 17,481 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Canary Islands | 0 | - | 4.62 | 17,491 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,826 |
| British Spellings | 0 | - | 4.06 | 99,506 |
| British Groups of Things | 0 | - | 4.25 | 82,907 |
| British Acronyms | 0 | - | 4.40 | 45,849 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,054 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,940 |
| Geography of Scotland | 0 | - | 4.63 | 21,656 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,629 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,851 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,506 |
| Geography of Germany | 0 | - | 4.35 | 17,207 |
| History of Germany | 0 | - | 4.39 | 52,895 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,834 |
| Name that Greek Letter | 0 | - | 4.93 | 324,156 |
| History of Spain | 0 | - | 4.23 | 21,115 |
| Languages of Spain | 0 | - | 4.36 | 23,350 |
| British to American Word Translation | 0 | - | 3.74 | 255,166 |
| British Foods by Description | 0 | - | 3.94 | 48,340 |
| British and American Word Differences | 0 | - | 2.63 | 46,898 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,611 |
| Bridges of London | 0 | - | 4.17 | 10,119 |
| British Sport Trivia | 0 | - | 4.37 | 20,486 |
| Famous Welsh People | 0 | - | 4.31 | 11,568 |
| Malta Country Quiz | 0 | - | 4.81 | 31,114 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,585 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,339 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,772 |
| Movies Set in France | 0 | - | 4.26 | 13,131 |
| French Inventions | 0 | - | 4.10 | 13,908 |
| History of Paris | 0 | - | 4.24 | 13,659 |
| Word Chain - Germany | 0 | - | 4.31 | 22,614 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,232 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,125 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,645 |
| Roman Emperors | 0 | - | 4.95 | 120,382 |
| Famous Nordic People | 0 | - | 4.34 | 20,165 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,954 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,357 |
| 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 | 16,746 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,675 |
| Australian Capitals | 0 | - | 4.92 | 62,753 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,903 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,306 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,703 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,255 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,941 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,258 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,889 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,165 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,976 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,253 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,797 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,707 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,352 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,009 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,299 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,291 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,852 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,541 |
| Capitals of French Regions | 0 | - | 4.45 | 16,108 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,398 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,845 |
| Ancient Greek Words | 0 | - | 4.93 | 111,897 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,977 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,070 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,613 |
| Oceania Map Quiz | 0 | - | 4.98 | 649,625 |
| European Physical Geography | 0 | - | 4.26 | 33,539 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,013 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,957 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,275 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,152 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,370 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,716 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,403 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,659 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Champions League Top 4 | 0 | - | 4.77 | 137,267 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,671 |
| Asia Map Quiz | 0 | - | 4.99 | 919,517 |
| Countries of Africa | 0 | - | 5.00 | 2,544,645 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,094 |
| African East Coast | 0 | - | 4.96 | 96,276 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,136 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,893 |
| Australia Map Quiz | 0 | - | 4.95 | 345,112 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,429 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,781 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,738 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,548 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,016 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,202 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,568 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,414 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,109 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,853 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,485 |
| European Geography By Letter - O | 0 | - | 4.29 | 62,975 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,117 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,748 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,407 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,662 |
| European Geography A-Z | 0 | - | 4.29 | 49,359 |
| Country Codes of Europe | 0 | - | 3.43 | 13,747 |
| The Only European Country ... | 0 | - | 4.91 | 217,368 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,566 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,297 |
| Austria... or Australia? | 0 | - | 4.68 | 104,499 |
| Presidents of France | 0 | - | 4.25 | 24,204 |
| French Foods | 0 | - | 4.00 | 27,722 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,693 |
