| European Countries by First 2 Letters | 0 | - | 4.95 | 530,350 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,443 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,157 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,376 |
| States of Germany | 0 | - | 4.95 | 153,045 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,232 |
| Regions of Italy | 0 | - | 4.92 | 76,176 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,380 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,292 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,374 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,736 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,290 |
| Official European Union Languages | 0 | - | 4.97 | 238,832 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,077 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,828 |
| The Vikings! | 0 | - | 4.46 | 28,367 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,080 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,895 |
| History of Italy | 0 | - | 4.55 | 32,041 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,920 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,714 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,288 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,416 |
| Celtic Nations | 0 | - | 4.69 | 46,981 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,501 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,116 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,683 |
| Regions of France | 0 | - | 4.72 | 121,140 |
| France Immigration by Country | 0 | - | 4.70 | 76,651 |
| Famous Germans | 0 | - | 4.50 | 55,488 |
| German Groups of Things | 0 | - | 4.46 | 38,508 |
| Germany True or False? | 0 | - | 4.61 | 48,866 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,126 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,717 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,471 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,797 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,327 |
| Counties of England | 0 | - | 4.97 | 798,498 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,398 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,793 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,339 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 82,911 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,222 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,884 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,741 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,080 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,114 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,082 |
| Champions League Winners | 0 | - | 4.91 | 1,009,295 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,559 |
| History of Austria | 0 | - | 4.70 | 17,897 |
| Geography of the French Empire | 0 | - | 4.45 | 27,149 |
| The French Revolution | 0 | - | 4.47 | 24,050 |
| France Multiple Choice | 0 | - | 4.39 | 40,765 |
| History of France | 0 | - | 4.59 | 57,235 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,200 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| American to British Word Translation | 0 | - | 4.14 | 139,265 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,940 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,778 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,268 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,518 |
| Famous French People | 0 | - | 4.07 | 35,809 |
| Departments of France | 0 | - | 4.93 | 54,391 |
| Word Chain - France | 0 | - | 4.38 | 42,825 |
| Italian Foods | 0 | - | 4.30 | 72,903 |
| The Mafia Quiz | 0 | - | 4.46 | 23,364 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,600 |
| History of The Netherlands | 0 | - | 4.46 | 17,471 |
| Canary Islands | 0 | - | 4.62 | 17,490 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,802 |
| British Spellings | 0 | - | 4.06 | 99,494 |
| British Groups of Things | 0 | - | 4.25 | 82,901 |
| British Acronyms | 0 | - | 4.40 | 45,837 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,051 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,917 |
| Geography of Scotland | 0 | - | 4.63 | 21,646 |
| England or Wales? | 0 | - | 4.94 | 45,776 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,903 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,635 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,670 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,834 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,491 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,589 |
| Slavic Languages | 0 | - | 4.68 | 54,448 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,842 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,499 |
| Geography of Germany | 0 | - | 4.35 | 17,203 |
| History of Germany | 0 | - | 4.39 | 52,884 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,567 |
| Name that Greek Letter | 0 | - | 4.93 | 324,096 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,653 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,507 |
| History of Spain | 0 | - | 4.23 | 21,112 |
| Languages of Spain | 0 | - | 4.36 | 23,347 |
| British to American Word Translation | 0 | - | 3.74 | 255,152 |
| British Foods by Description | 0 | - | 3.94 | 48,338 |
| British and American Word Differences | 0 | - | 2.63 | 46,895 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,609 |
| Bridges of London | 0 | - | 4.17 | 10,118 |
| British Sport Trivia | 0 | - | 4.37 | 20,482 |
| Famous Welsh People | 0 | - | 4.31 | 11,557 |
| Malta Country Quiz | 0 | - | 4.81 | 31,101 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,526 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,284 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,768 |
| Movies Set in France | 0 | - | 4.26 | 13,129 |
| French Inventions | 0 | - | 4.10 | 13,905 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| Word Chain - Germany | 0 | - | 4.31 | 22,609 |
| The Trojan War | 0 | - | 4.83 | 39,785 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,140 |
| Word Chain - Italy | 0 | - | 4.07 | 23,178 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,122 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,629 |
| Roman Emperors | 0 | - | 4.95 | 120,320 |
| Famous Nordic People | 0 | - | 4.34 | 20,159 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,940 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,355 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,542 |
| People on Money - England | 0 | - | 4.29 | 16,623 |
| Name a Valid English City | 0 | - | 4.19 | 16,742 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,552 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,693 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,121 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,437 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,021 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,797 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,060 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,763 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,060 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,880 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,168 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,677 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,230 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,340 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,998 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,286 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,281 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,771 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,531 |
| Capitals of French Regions | 0 | - | 4.45 | 16,099 |
| Capitals of German States | 0 | - | 4.74 | 28,979 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,385 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,671 |
| Ancient Greek Words | 0 | - | 4.93 | 111,840 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,824 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,993 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,043 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,571 |
| Australian Capitals | 0 | - | 4.92 | 62,743 |
| European Physical Geography | 0 | - | 4.26 | 33,536 |
| Geography of Russia | 0 | - | 4.57 | 21,552 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,000 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,781 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,245 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,131 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,359 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,708 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,396 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,631 |
| Geography of the British Empire | 0 | - | 4.48 | 39,732 |
| Champions League Top 4 | 0 | - | 4.77 | 137,137 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,400 |
| Asia Map Quiz | 0 | - | 4.99 | 918,960 |
| Countries of Africa | 0 | - | 5.00 | 2,543,258 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,048 |
| African East Coast | 0 | - | 4.96 | 96,233 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,088 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,848 |
| Australia Map Quiz | 0 | - | 4.95 | 344,982 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,633 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,702 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,725 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,457 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,923 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,055 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,434 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,296 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,977 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,741 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,385 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,892 |
| European Geography by Letter - W | 0 | - | 4.20 | 83,050 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,731 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,331 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,600 |
| European Geography A-Z | 0 | - | 4.29 | 49,350 |
| Country Codes of Europe | 0 | - | 3.43 | 13,743 |
| The Only European Country ... | 0 | - | 4.91 | 217,262 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,494 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,270 |
| Austria... or Australia? | 0 | - | 4.68 | 104,476 |
| Presidents of France | 0 | - | 4.25 | 24,195 |
| French Foods | 0 | - | 4.00 | 27,717 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,061 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,944 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,505 |
