| European Countries by First 2 Letters | 0 | - | 4.95 | 525,977 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,768 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,017 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,259 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,106 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,627 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,509 |
| Official European Union Languages | 0 | - | 4.97 | 236,326 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,591 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,796 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,419 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,479 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,523 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,224 |
| Celtic Nations | 0 | - | 4.69 | 46,796 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,536 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,485 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,001 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,034 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,298 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,811 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,758 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,625 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,154 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,761 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,615 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,578 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,984 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,229 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,546 |
| Famous Germans | 0 | - | 4.50 | 54,552 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,237 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,138 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,102 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,088 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,550 |
| States of Germany | 0 | - | 4.96 | 149,740 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,896 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| Regions of Italy | 0 | - | 4.92 | 74,585 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,723 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,122 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,049 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Champions League Winners | 0 | - | 4.92 | 994,917 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,924 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,156 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,146 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,386 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,834 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,201 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,427 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,099 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,879 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,260 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,470 |
| European Geography A-Z | 0 | - | 4.28 | 48,947 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,592 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,905 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,772 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,184 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,944 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,884 |
| Slavic Languages | 0 | - | 4.67 | 53,923 |
| Departments of France | 0 | - | 4.93 | 52,629 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,403 |
| The Mafia Quiz | 0 | - | 4.46 | 23,193 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,341 |
| History of The Netherlands | 0 | - | 4.46 | 17,296 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,221 |
| England or Wales? | 0 | - | 4.94 | 45,276 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,258 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,316 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,733 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,482 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,903 |
| Africa A-Z | 0 | - | 4.57 | 46,342 |
| Top European Languages on a Map | 0 | - | 4.77 | 130,974 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,055 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,542 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,547 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,951 |
| France A-Z | 0 | - | 4.16 | 38,041 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,112 |
| Name that Greek Letter | 0 | - | 4.94 | 321,405 |
| History of Italy | 0 | - | 4.55 | 31,796 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,079 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,458 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,958 |
| Switzerland A-Z | 0 | - | 4.45 | 25,483 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 32,723 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,249 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,908 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,078 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,565 |
| Famous Russians | 0 | - | 4.16 | 23,706 |
| Famous French People | 0 | - | 4.12 | 27,860 |
| Capitals of French Regions | 0 | - | 4.45 | 15,977 |
| Capitals of German States | 0 | - | 4.74 | 28,793 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,067 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,961 |
| The Trojan War | 0 | - | 4.83 | 39,392 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,322 |
| Famous Irish People | 0 | - | 4.05 | 45,845 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,955 |
| Roman Emperors | 0 | - | 4.95 | 118,269 |
| Famous Nordic People | 0 | - | 4.34 | 19,816 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,538 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,454 |
| People on Money - England | 0 | - | 4.29 | 16,557 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,280 |
| London A-Z | 0 | - | 4.10 | 40,621 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,560 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,362 |
| Australian Capitals | 0 | - | 4.92 | 62,583 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,672 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,958 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,570 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,906 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,945 |
| Regions of France | 0 | - | 4.78 | 119,015 |
| France Immigration by Country | 0 | - | 4.72 | 75,908 |
| German Groups of Things | 0 | - | 4.46 | 38,286 |
| Germany True or False? | 0 | - | 4.61 | 48,501 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,378 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,513 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,713 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,021 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,847 |
| Famous Scottish People | 0 | - | 4.22 | 18,318 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,768 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,341 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,107 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,514 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,020 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,436,926 |
| Asia Map Quiz | 0 | - | 4.99 | 905,612 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,653 |
| Middle East A-Z | 0 | - | 4.46 | 45,742 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,625 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,696 |
| African East Coast | 0 | - | 4.96 | 94,902 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,767 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,715 |
| Canada A-Z | 0 | - | 4.73 | 32,621 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,811 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,150 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,699 |
| European Physical Geography | 0 | - | 4.26 | 33,363 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,319 |
| Country Codes of Europe | 0 | - | 3.46 | 13,645 |
| The Only European Country ... | 0 | - | 4.91 | 213,452 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,301 |
| Geography of Russia | 0 | - | 4.57 | 21,415 |
| Russian History A-Z | 0 | - | 4.38 | 30,189 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,752 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Presidents of France | 0 | - | 4.25 | 23,863 |
| Geography of the French Empire | 0 | - | 4.48 | 26,910 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| France Multiple Choice | 0 | - | 4.38 | 40,617 |
| History of France | 0 | - | 4.59 | 55,863 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,368 |
| Ancient Greek Words | 0 | - | 4.92 | 110,532 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,540 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,648 |
| The Portuguese Empire | 0 | - | 4.54 | 11,979 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,949 |
| American to British Word Translation | 0 | - | 4.06 | 117,001 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,679 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,376 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,779 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,175 |
| Champions League Top 4 | 0 | - | 4.77 | 133,458 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,277 |
| A Quiz About Islam | 0 | - | 4.31 | 48,174 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,392 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,427 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,615 |
| Countries with NO Military | 0 | - | 4.97 | 61,046 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 84,988 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,551 |
| Monarchies of the World | 0 | - | 4.94 | 166,354 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,384 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,793 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,311 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,592 |
| People on Money by Country | 0 | - | 4.84 | 59,926 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,823 |
| NATO Countries | 0 | - | 4.98 | 275,050 |
| EU Countries Quiz | 0 | - | 4.99 | 269,384 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,743 |
| Books of the Protestant Bible | 0 | - | 4.89 | 206,786 |
| Astronomy Quiz | 0 | - | 4.89 | 81,565 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,546 |
| Solar System Trivia | 0 | - | 4.93 | 45,892 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,080 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,631 |
