| European Countries by First 2 Letters | 0 | - | 4.95 | 528,955 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,278 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,049 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,754 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,025 |
| Official European Union Languages | 0 | - | 4.97 | 238,208 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,655 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,636 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,569 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,903 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,770 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,368 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,045 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,849 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,298 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,900 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,734 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,472 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,706 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,433 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,151 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,202 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,229 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,287 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,611 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,506 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,833 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,196 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,418 |
| Famous Germans | 0 | - | 4.50 | 55,205 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,343 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,226 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,954 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,415 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,530 |
| States of Germany | 0 | - | 4.96 | 152,028 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,916 |
| Regions of Italy | 0 | - | 4.92 | 75,635 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,964 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,703 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,072 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Champions League Winners | 0 | - | 4.92 | 1,004,395 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,424 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,590 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,312 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,636 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,803 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,457 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,289 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,948 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,552 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,785 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,048 |
| European Geography A-Z | 0 | - | 4.29 | 49,214 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,645 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,539 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,576 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,729 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,410 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,768 |
| Slavic Languages | 0 | - | 4.68 | 54,286 |
| Famous French People | 0 | - | 4.06 | 35,156 |
| Departments of France | 0 | - | 4.93 | 53,863 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| The Mafia Quiz | 0 | - | 4.46 | 23,301 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,526 |
| History of The Netherlands | 0 | - | 4.46 | 17,412 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,427 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,702 |
| England or Wales? | 0 | - | 4.94 | 45,619 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,946 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,943 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,363 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,729 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,761 |
| Africa A-Z | 0 | - | 4.57 | 46,575 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,907 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,450 |
| History of Russia Quiz | 0 | - | 4.49 | 31,886 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,703 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,050 |
| France A-Z | 0 | - | 4.16 | 38,180 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,354 |
| Name that Greek Letter | 0 | - | 4.93 | 323,163 |
| History of Italy | 0 | - | 4.55 | 31,941 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,668 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,445 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,357 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,883 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,375 |
| Famous Russians | 0 | - | 4.16 | 23,823 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Capitals of German States | 0 | - | 4.74 | 28,936 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,292 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,121 |
| The Trojan War | 0 | - | 4.83 | 39,663 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,593 |
| Famous Irish People | 0 | - | 4.05 | 45,984 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,437 |
| Roman Emperors | 0 | - | 4.95 | 119,715 |
| Famous Nordic People | 0 | - | 4.34 | 20,074 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,518 |
| People on Money - England | 0 | - | 4.29 | 16,606 |
| London A-Z | 0 | - | 4.10 | 40,749 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,229 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,914 |
| Australian Capitals | 0 | - | 4.92 | 62,701 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,099 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,220 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,881 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,170 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,196 |
| Regions of France | 0 | - | 4.75 | 120,483 |
| France Immigration by Country | 0 | - | 4.70 | 76,422 |
| German Groups of Things | 0 | - | 4.46 | 38,450 |
| Germany True or False? | 0 | - | 4.61 | 48,747 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,897 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,747 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,249 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,238 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,098 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,085 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,638 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,371 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,834 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,312 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,015 |
| Asia Map Quiz | 0 | - | 4.99 | 914,952 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,963 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,778 |
| Middle East A-Z | 0 | - | 4.47 | 45,980 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,901 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,657 |
| African East Coast | 0 | - | 4.96 | 95,866 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,672 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,508 |
| Canada A-Z | 0 | - | 4.73 | 32,785 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,840 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,594 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,626 |
| European Physical Geography | 0 | - | 4.26 | 33,479 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,909 |
| Country Codes of Europe | 0 | - | 3.43 | 13,701 |
| The Only European Country ... | 0 | - | 4.91 | 216,095 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,835 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,066 |
| Geography of Russia | 0 | - | 4.57 | 21,514 |
| Russian History A-Z | 0 | - | 4.38 | 31,619 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,917 |
| History of Austria | 0 | - | 4.70 | 17,839 |
| Presidents of France | 0 | - | 4.25 | 24,043 |
| Geography of the French Empire | 0 | - | 4.45 | 27,032 |
| The French Revolution | 0 | - | 4.46 | 23,912 |
| France Multiple Choice | 0 | - | 4.39 | 40,716 |
| History of France | 0 | - | 4.59 | 56,863 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| Ancient Greek Words | 0 | - | 4.93 | 111,399 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,025 |
| The Vikings! | 0 | - | 4.46 | 28,322 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,059 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,014 |
| American to British Word Translation | 0 | - | 4.14 | 138,810 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,868 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,621 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,773 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,499 |
| Champions League Top 4 | 0 | - | 4.77 | 135,926 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,709 |
| A Quiz About Islam | 0 | - | 4.31 | 48,404 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,772 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,566 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,082 |
| Countries with NO Military | 0 | - | 4.97 | 62,010 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 90,938 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,050 |
| Countries with the Densest Road Networks | 0 | - | 4.33 | 17,783 |
| Countries by Lamborghini Dealerships | 0 | - | 4.35 | 51,771 |
| Monarchies of the World | 0 | - | 4.94 | 168,320 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,388 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,627 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,134 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,019 |
| People on Money by Country | 0 | - | 4.83 | 60,300 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,427 |
| NATO Countries | 0 | - | 4.98 | 279,427 |
| EU Countries Quiz | 0 | - | 4.99 | 273,060 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,844 |
| Books of the Protestant Bible | 0 | - | 4.89 | 209,511 |
| Astronomy Quiz | 0 | - | 4.90 | 82,431 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,587 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,279 |
