| European Countries by First 2 Letters | 0 | - | 4.95 | 526,353 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,851 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,482 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,332 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,260 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,793 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,581 |
| Official European Union Languages | 0 | - | 4.97 | 236,531 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,702 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,202 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,540 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,568 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,826 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,887 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,932 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,410 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,910 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,856 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,715 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,220 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,897 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,673 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,628 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,025 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,308 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,598 |
| Famous Germans | 0 | - | 4.50 | 54,614 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,503 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,328 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,215 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,147 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,002 |
| States of Germany | 0 | - | 4.96 | 150,056 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,015 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Regions of Italy | 0 | - | 4.92 | 74,727 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,813 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,352 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,166 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,406 |
| Champions League Winners | 0 | - | 4.92 | 996,352 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,999 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,223 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,219 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,640 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,906 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,281 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,494 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,171 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,919 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,297 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,511 |
| European Geography A-Z | 0 | - | 4.28 | 49,003 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,990 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,048 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,539 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,205 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,173 |
| Slavic Languages | 0 | - | 4.67 | 53,985 |
| Departments of France | 0 | - | 4.93 | 52,827 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,429 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,368 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,246 |
| England or Wales? | 0 | - | 4.94 | 45,318 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,497 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,533 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,816 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,513 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,103 |
| Africa A-Z | 0 | - | 4.57 | 46,371 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,133 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,128 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,555 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| France A-Z | 0 | - | 4.16 | 38,057 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,923 |
| Name that Greek Letter | 0 | - | 4.94 | 321,671 |
| History of Italy | 0 | - | 4.55 | 31,815 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,162 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,981 |
| Switzerland A-Z | 0 | - | 4.45 | 25,508 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,229 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,862 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,355 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,149 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,610 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| Famous French People | 0 | - | 4.12 | 27,947 |
| Capitals of French Regions | 0 | - | 4.45 | 15,985 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,096 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,984 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,538 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,046 |
| Roman Emperors | 0 | - | 4.95 | 118,491 |
| Famous Nordic People | 0 | - | 4.34 | 19,855 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,544 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| People on Money - England | 0 | - | 4.29 | 16,564 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,329 |
| London A-Z | 0 | - | 4.10 | 40,637 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,310 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,311 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,742 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,991 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,617 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,944 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,982 |
| Regions of France | 0 | - | 4.78 | 119,253 |
| France Immigration by Country | 0 | - | 4.72 | 75,964 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany True or False? | 0 | - | 4.61 | 48,535 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,465 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,137 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,828 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,960 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,830 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,395 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,162 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,564 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,077 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,473 |
| Asia Map Quiz | 0 | - | 4.99 | 907,031 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,714 |
| Middle East A-Z | 0 | - | 4.47 | 45,787 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,804 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,814 |
| African East Coast | 0 | - | 4.96 | 95,051 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,926 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,800 |
| Canada A-Z | 0 | - | 4.73 | 32,648 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,148 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,210 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,988 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,561 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,836 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,535 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Russian History A-Z | 0 | - | 4.38 | 30,826 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,775 |
| History of Austria | 0 | - | 4.70 | 17,747 |
| Presidents of France | 0 | - | 4.25 | 23,903 |
| Geography of the French Empire | 0 | - | 4.48 | 26,934 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| History of France | 0 | - | 4.59 | 56,046 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Ancient Greek Words | 0 | - | 4.92 | 110,694 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,617 |
| The Vikings! | 0 | - | 4.45 | 28,245 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,698 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,958 |
| American to British Word Translation | 0 | - | 4.06 | 117,060 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,703 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,093 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,340 |
| Champions League Top 4 | 0 | - | 4.77 | 133,815 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,471 |
| A Quiz About Islam | 0 | - | 4.31 | 48,209 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,444 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,925 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,304 |
| Countries with NO Military | 0 | - | 4.97 | 61,174 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,084 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,751 |
| Countries with the Densest Road Networks | 0 | - | 4.33 | 17,713 |
| Countries by Lamborghini Dealerships | 0 | - | 4.35 | 51,347 |
| Monarchies of the World | 0 | - | 4.94 | 166,606 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,541 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,926 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,457 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,665 |
| People on Money by Country | 0 | - | 4.84 | 59,980 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,902 |
| NATO Countries | 0 | - | 4.98 | 275,734 |
| EU Countries Quiz | 0 | - | 4.99 | 269,922 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,043 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,222 |
| Astronomy Quiz | 0 | - | 4.89 | 81,702 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,162 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,733 |
