| European Countries by First 2 Letters | 0 | - | 4.95 | 532,839 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,099 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,197 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,069 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,029 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,104 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,815 |
| Official European Union Languages | 0 | - | 4.97 | 240,005 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,763 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,227 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,764 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,361 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,085 |
| Monarchies of the World | 0 | - | 4.94 | 170,449 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,183 |
| Celtic Nations | 0 | - | 4.61 | 47,117 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,524 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,016 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,282 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,727 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,499 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,306 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,612 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,315 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,718 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,219 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,594 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,245 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,748 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,266 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,873 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,150 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,756 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,544 |
| Famous Germans | 0 | - | 4.50 | 55,844 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,493 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,924 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,854 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,790 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,810 |
| States of Germany | 0 | - | 4.95 | 154,804 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,765 |
| Regions of Italy | 0 | - | 4.92 | 77,204 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,866 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,490 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,853 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,583 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,850 |
| Champions League Winners | 0 | - | 4.92 | 1,017,308 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,090 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,409 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,372 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,625 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,330 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,100 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,685 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,327 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,710 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,681 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,983 |
| European Geography A-Z | 0 | - | 4.29 | 49,508 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,732 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,408 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,403 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,159 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,200 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,127 |
| Slavic Languages | 0 | - | 4.67 | 54,751 |
| Famous French People | 0 | - | 4.05 | 36,138 |
| Departments of France | 0 | - | 4.93 | 55,317 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,752 |
| The Mafia Quiz | 0 | - | 4.46 | 23,447 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,763 |
| History of The Netherlands | 0 | - | 4.46 | 17,567 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,657 |
| England or Wales? | 0 | - | 4.94 | 46,000 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,351 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,014 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,130 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,899 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,582 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,956 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,889 |
| History of Russia Quiz | 0 | - | 4.47 | 32,012 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,891 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,677 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,154 |
| France A-Z | 0 | - | 4.16 | 38,353 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,598 |
| Name that Greek Letter | 0 | - | 4.93 | 325,166 |
| History of Italy | 0 | - | 4.55 | 32,169 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,463 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,839 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,456 |
| Switzerland A-Z | 0 | - | 4.45 | 25,781 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,060 |
| Africa A-Z | 0 | - | 4.57 | 46,792 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,326,964 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,484 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,593 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,776 |
| Famous Russians | 0 | - | 4.16 | 23,920 |
| Russian History A-Z | 0 | - | 4.35 | 32,277 |
| Capitals of French Regions | 0 | - | 4.45 | 16,191 |
| Capitals of German States | 0 | - | 4.74 | 29,086 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,573 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,251 |
| The Trojan War | 0 | - | 4.83 | 40,031 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,103 |
| Famous Irish People | 0 | - | 4.05 | 46,076 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,652 |
| Roman Emperors | 0 | - | 4.95 | 121,355 |
| Famous Nordic People | 0 | - | 4.34 | 20,325 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| London A-Z | 0 | - | 4.10 | 40,889 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,974 |
| Australian Capitals | 0 | - | 4.92 | 62,853 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,570 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,553 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,225 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,491 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,452 |
| Regions of France | 0 | - | 4.70 | 122,276 |
| France Immigration by Country | 0 | - | 4.70 | 76,981 |
| German Groups of Things | 0 | - | 4.47 | 38,654 |
| Germany True or False? | 0 | - | 4.61 | 49,049 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,545 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,180 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,879 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,425 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,908 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,514 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,122 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,706 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,261 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,700 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,125 |
| Asia Map Quiz | 0 | - | 4.99 | 926,208 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,360 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,365 |
| Middle East A-Z | 0 | - | 4.47 | 46,262 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,077 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,695 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,558 |
| Canada A-Z | 0 | - | 4.73 | 32,984 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,214 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,970 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,087 |
| European Physical Geography | 0 | - | 4.26 | 33,610 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,394 |
| Country Codes of Europe | 0 | - | 3.45 | 13,841 |
| The Only European Country ... | 0 | - | 4.91 | 219,403 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,743 |
| Geography of Russia | 0 | - | 4.57 | 21,614 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,150 |
| History of Austria | 0 | - | 4.70 | 17,988 |
| Presidents of France | 0 | - | 4.25 | 24,360 |
| Geography of the French Empire | 0 | - | 4.45 | 27,225 |
| The French Revolution | 0 | - | 4.47 | 24,158 |
| France Multiple Choice | 0 | - | 4.39 | 40,867 |
| History of France | 0 | - | 4.61 | 57,689 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,569 |
| Ancient Greek Words | 0 | - | 4.93 | 112,601 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,569 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,129 |
| American to British Word Translation | 0 | - | 4.14 | 139,780 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,082 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,833 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,576 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,933 |
| Champions League Top 4 | 0 | - | 4.78 | 139,418 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,077 |
| A Quiz About Islam | 0 | - | 4.32 | 48,650 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,211 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,183 |
| African East Coast | 0 | - | 4.96 | 96,885 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,753 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,742 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,480 |
| Countries with NO Military | 0 | - | 4.97 | 63,544 |
| Top Arms Exporting Countries | 0 | - | 4.97 | 105,775 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,940 |
| Popular Royal Names | 0 | - | 4.27 | 125,438 |
| Queen in the Answers | 0 | - | 4.29 | 53,120 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,906 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,196 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 115,311 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,646 |
| People on Money by Country | 0 | - | 4.83 | 60,748 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,161 |
| NATO Countries | 0 | - | 4.98 | 283,827 |
| EU Countries Quiz | 0 | - | 4.99 | 278,681 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,681 |
| Books of the Protestant Bible | 0 | - | 4.84 | 212,200 |
| Astronomy Quiz | 0 | - | 4.90 | 83,376 |
