| European Countries by First 2 Letters | 0 | - | 4.95 | 526,282 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,837 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,404 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,319 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,226 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,763 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,573 |
| Official European Union Languages | 0 | - | 4.97 | 236,497 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,688 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,145 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,445 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,533 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,562 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,237 |
| Celtic Nations | 0 | - | 4.69 | 46,810 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,793 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,839 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,045 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,812 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,383 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,886 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,822 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,692 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,206 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,868 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,659 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,618 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,013 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,293 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,585 |
| Famous Germans | 0 | - | 4.50 | 54,605 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,410 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,304 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,202 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,134 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,940 |
| States of Germany | 0 | - | 4.96 | 150,011 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,000 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,689 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,795 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,310 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,137 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,403 |
| Champions League Winners | 0 | - | 4.92 | 996,170 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,989 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,210 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,201 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,519 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,886 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,261 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,475 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,154 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,911 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,289 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,502 |
| European Geography A-Z | 0 | - | 4.28 | 48,992 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,976 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,013 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,483 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,171 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,135 |
| Slavic Languages | 0 | - | 4.67 | 53,970 |
| Departments of France | 0 | - | 4.93 | 52,793 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,427 |
| The Mafia Quiz | 0 | - | 4.46 | 23,203 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,360 |
| History of The Netherlands | 0 | - | 4.46 | 17,308 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,243 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,466 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,497 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,783 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,509 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,084 |
| Africa A-Z | 0 | - | 4.57 | 46,364 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,112 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,111 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,553 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| France A-Z | 0 | - | 4.16 | 38,055 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,789 |
| Name that Greek Letter | 0 | - | 4.94 | 321,631 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,154 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,478 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Switzerland A-Z | 0 | - | 4.45 | 25,506 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,144 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,600 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,664 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,140 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,605 |
| Famous Russians | 0 | - | 4.16 | 23,727 |
| Famous French People | 0 | - | 4.12 | 27,935 |
| Capitals of French Regions | 0 | - | 4.45 | 15,983 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,983 |
| The Trojan War | 0 | - | 4.83 | 39,424 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,516 |
| Famous Irish People | 0 | - | 4.05 | 45,854 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,038 |
| Roman Emperors | 0 | - | 4.95 | 118,446 |
| Famous Nordic People | 0 | - | 4.34 | 19,851 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,542 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,460 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,323 |
| London A-Z | 0 | - | 4.10 | 40,635 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,059 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,188 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,729 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,986 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,610 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,979 |
| Regions of France | 0 | - | 4.78 | 119,206 |
| France Immigration by Country | 0 | - | 4.72 | 75,957 |
| German Groups of Things | 0 | - | 4.46 | 38,305 |
| Germany True or False? | 0 | - | 4.61 | 48,530 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,460 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,978 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,771 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,043 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,938 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,823 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,387 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,156 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,558 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,066 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,896 |
| Asia Map Quiz | 0 | - | 4.99 | 906,868 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,706 |
| Middle East A-Z | 0 | - | 4.47 | 45,780 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,780 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,799 |
| African East Coast | 0 | - | 4.96 | 95,028 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,907 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,780 |
| Canada A-Z | 0 | - | 4.73 | 32,645 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,098 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,198 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,943 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,515 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,776 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,501 |
| Geography of Russia | 0 | - | 4.57 | 21,425 |
| Russian History A-Z | 0 | - | 4.38 | 30,771 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,772 |
| History of Austria | 0 | - | 4.70 | 17,744 |
| Presidents of France | 0 | - | 4.25 | 23,899 |
| Geography of the French Empire | 0 | - | 4.48 | 26,925 |
| The French Revolution | 0 | - | 4.46 | 23,780 |
| France Multiple Choice | 0 | - | 4.38 | 40,633 |
| History of France | 0 | - | 4.59 | 56,015 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Ancient Greek Words | 0 | - | 4.92 | 110,681 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,689 |
| The Portuguese Empire | 0 | - | 4.54 | 11,989 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,955 |
| American to British Word Translation | 0 | - | 4.06 | 117,050 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,391 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,043 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,313 |
| Champions League Top 4 | 0 | - | 4.77 | 133,757 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,442 |
| A Quiz About Islam | 0 | - | 4.31 | 48,202 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,430 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,858 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,198 |
| Countries with NO Military | 0 | - | 4.97 | 61,153 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,062 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,735 |
| Countries with the Densest Road Networks | 0 | - | 4.33 | 17,710 |
| Countries by Lamborghini Dealerships | 0 | - | 4.35 | 51,338 |
| Monarchies of the World | 0 | - | 4.94 | 166,577 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,515 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,901 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,441 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,660 |
| People on Money by Country | 0 | - | 4.84 | 59,971 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,894 |
| NATO Countries | 0 | - | 4.98 | 275,643 |
| EU Countries Quiz | 0 | - | 4.99 | 269,857 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,011 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,147 |
| Astronomy Quiz | 0 | - | 4.89 | 81,676 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,148 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,713 |
