| European Countries by First 2 Letters | 0 | - | 4.95 | 532,287 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,979 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,450 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,665 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,478 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,913 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,678 |
| Official European Union Languages | 0 | - | 4.97 | 239,679 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,579 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,651 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,737 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,285 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,040 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 66,162 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,908 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,495 |
| Celtic Nations | 0 | - | 4.61 | 47,085 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,551 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,506 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,673 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,413 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,210 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,917 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,194 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,504 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,208 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,809 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,211 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,921 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,435 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,649 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,371 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,266 |
| Famous Germans | 0 | - | 4.50 | 55,765 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,320 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,766 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,718 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,734 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,339 |
| States of Germany | 0 | - | 4.95 | 154,331 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,652 |
| Regions of Italy | 0 | - | 4.92 | 76,967 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,763 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,237 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,708 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Champions League Winners | 0 | - | 4.92 | 1,015,318 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,930 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,338 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,871 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,187 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,973 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,687 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,369 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,994 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,412 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,456 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,748 |
| European Geography A-Z | 0 | - | 4.29 | 49,471 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,272 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,735 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,636 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,784 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,770 |
| Slavic Languages | 0 | - | 4.68 | 54,671 |
| Famous French People | 0 | - | 4.07 | 36,074 |
| Departments of France | 0 | - | 4.93 | 55,064 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,727 |
| The Mafia Quiz | 0 | - | 4.46 | 23,432 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| History of The Netherlands | 0 | - | 4.46 | 17,545 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,612 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,094 |
| England or Wales? | 0 | - | 4.94 | 45,943 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,978 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,898 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,063 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,561 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,260 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,782 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,825 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,863 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,667 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,139 |
| France A-Z | 0 | - | 4.16 | 38,326 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,544 |
| Name that Greek Letter | 0 | - | 4.93 | 324,882 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,310 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,413 |
| Switzerland A-Z | 0 | - | 4.45 | 25,756 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,961 |
| Africa A-Z | 0 | - | 4.57 | 46,760 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,324,847 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,707 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,514 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,711 |
| Famous Russians | 0 | - | 4.16 | 23,906 |
| Russian History A-Z | 0 | - | 4.35 | 32,180 |
| Capitals of French Regions | 0 | - | 4.45 | 16,172 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,666 |
| Capitals of German States | 0 | - | 4.74 | 29,064 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,529 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,232 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,869 |
| Famous Irish People | 0 | - | 4.05 | 46,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,561 |
| Roman Emperors | 0 | - | 4.95 | 121,098 |
| Famous Nordic People | 0 | - | 4.34 | 20,289 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,644 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,573 |
| People on Money - England | 0 | - | 4.29 | 16,643 |
| London A-Z | 0 | - | 4.10 | 40,873 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,847 |
| Australian Capitals | 0 | - | 4.92 | 62,825 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,503 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,500 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,159 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,440 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,408 |
| Regions of France | 0 | - | 4.70 | 121,983 |
| France Immigration by Country | 0 | - | 4.70 | 76,902 |
| German Groups of Things | 0 | - | 4.47 | 38,622 |
| Germany True or False? | 0 | - | 4.61 | 49,003 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,431 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,531 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,713 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,398 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,763 |
| Famous Scottish People | 0 | - | 4.22 | 18,437 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,406 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,020 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,621 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,156 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,617 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,109 |
| Asia Map Quiz | 0 | - | 4.99 | 924,510 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,277 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,250 |
| Middle East A-Z | 0 | - | 4.47 | 46,232 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,840 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,439 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,408 |
| Canada A-Z | 0 | - | 4.73 | 32,957 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,805 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,625 |
| European Physical Geography | 0 | - | 4.26 | 33,588 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,993 |
| Country Codes of Europe | 0 | - | 3.43 | 13,805 |
| The Only European Country ... | 0 | - | 4.91 | 218,797 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,409 |
| Geography of Russia | 0 | - | 4.57 | 21,594 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,111 |
| History of Austria | 0 | - | 4.70 | 17,968 |
| Presidents of France | 0 | - | 4.25 | 24,325 |
| Geography of the French Empire | 0 | - | 4.45 | 27,209 |
| The French Revolution | 0 | - | 4.47 | 24,137 |
| France Multiple Choice | 0 | - | 4.39 | 40,834 |
| History of France | 0 | - | 4.61 | 57,569 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,556 |
| Ancient Greek Words | 0 | - | 4.93 | 112,394 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,363 |
| The Portuguese Empire | 0 | - | 4.58 | 12,100 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,112 |
| American to British Word Translation | 0 | - | 4.14 | 139,649 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,046 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,799 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,198 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,730 |
| Champions League Top 4 | 0 | - | 4.78 | 138,839 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,870 |
| A Quiz About Islam | 0 | - | 4.32 | 48,604 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,151 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,781 |
| African East Coast | 0 | - | 4.96 | 96,697 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,554 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,131 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,681 |
| Countries with NO Military | 0 | - | 4.97 | 63,323 |
| Top Arms Exporting Countries | 0 | - | 4.97 | 104,618 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,663 |
| Monarchies of the World | 0 | - | 4.94 | 170,098 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,762 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,028 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 115,164 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,560 |
| People on Money by Country | 0 | - | 4.83 | 60,684 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,057 |
| NATO Countries | 0 | - | 4.98 | 283,194 |
| EU Countries Quiz | 0 | - | 4.99 | 277,589 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,210 |
| Books of the Protestant Bible | 0 | - | 4.84 | 211,803 |
| Astronomy Quiz | 0 | - | 4.90 | 83,213 |
