| European Countries by First 2 Letters | 0 | - | 4.95 | 530,048 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,453 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,743 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,137 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,236 |
| Official European Union Languages | 0 | - | 4.97 | 238,704 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,986 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,586 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,621 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,040 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,868 |
| Monarchies of the World | 0 | - | 4.94 | 168,996 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,881 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,409 |
| Celtic Nations | 0 | - | 4.69 | 46,967 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,885 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,375 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,395 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,123 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,112 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,360 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,468 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,852 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,152 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,785 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,643 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,847 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,661 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,959 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,807 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,102 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,555 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,699 |
| Famous Germans | 0 | - | 4.50 | 55,352 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,568 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,610 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,245 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,531 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,648 |
| States of Germany | 0 | - | 4.95 | 152,883 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,164 |
| Regions of Italy | 0 | - | 4.92 | 76,082 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,294 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,160 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,296 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,537 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,724 |
| Champions League Winners | 0 | - | 4.92 | 1,008,318 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,575 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,092 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,882 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,040 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,153 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,833 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,638 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,274 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,821 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,996 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,272 |
| European Geography A-Z | 0 | - | 4.29 | 49,317 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,667 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,781 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,290 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,597 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,121 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,350 |
| Slavic Languages | 0 | - | 4.68 | 54,414 |
| Famous French People | 0 | - | 4.07 | 35,677 |
| Departments of France | 0 | - | 4.93 | 54,275 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,636 |
| The Mafia Quiz | 0 | - | 4.46 | 23,346 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,565 |
| History of The Netherlands | 0 | - | 4.46 | 17,450 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,492 |
| England or Wales? | 0 | - | 4.94 | 45,749 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,703 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,425 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,546 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,812 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,413 |
| Africa A-Z | 0 | - | 4.57 | 46,642 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,209 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,580 |
| History of Russia Quiz | 0 | - | 4.47 | 31,940 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,758 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,630 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,074 |
| France A-Z | 0 | - | 4.16 | 38,225 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,188 |
| Name that Greek Letter | 0 | - | 4.93 | 323,996 |
| History of Italy | 0 | - | 4.55 | 32,022 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,858 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,696 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,271 |
| Switzerland A-Z | 0 | - | 4.45 | 25,664 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 39,898 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,318,281 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,025 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,505 |
| Famous Russians | 0 | - | 4.16 | 23,853 |
| Russian History A-Z | 0 | - | 4.38 | 31,794 |
| Capitals of French Regions | 0 | - | 4.45 | 16,093 |
| Capitals of German States | 0 | - | 4.74 | 28,975 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,364 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,160 |
| The Trojan War | 0 | - | 4.83 | 39,767 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,025 |
| Famous Irish People | 0 | - | 4.05 | 46,008 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,597 |
| Roman Emperors | 0 | - | 4.95 | 120,227 |
| Famous Nordic People | 0 | - | 4.34 | 20,148 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,616 |
| People on Money - England | 0 | - | 4.29 | 16,620 |
| London A-Z | 0 | - | 4.10 | 40,797 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,913 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,189 |
| Australian Capitals | 0 | - | 4.92 | 62,734 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,243 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,315 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,980 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,265 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,264 |
| Regions of France | 0 | - | 4.72 | 121,002 |
| France Immigration by Country | 0 | - | 4.70 | 76,598 |
| German Groups of Things | 0 | - | 4.46 | 38,495 |
| Germany True or False? | 0 | - | 4.61 | 48,844 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,078 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,396 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,442 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,290 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,336 |
| Famous Scottish People | 0 | - | 4.22 | 18,405 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,185 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,762 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,455 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,961 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,407 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,996 |
| Asia Map Quiz | 0 | - | 4.99 | 918,021 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,084 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,949 |
| Middle East A-Z | 0 | - | 4.47 | 46,086 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,429 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,970 |
| African East Coast | 0 | - | 4.96 | 96,155 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,031 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,812 |
| Canada A-Z | 0 | - | 4.73 | 32,859 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,543 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,706 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,296 |
| European Physical Geography | 0 | - | 4.26 | 33,525 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,458 |
| Country Codes of Europe | 0 | - | 3.43 | 13,738 |
| The Only European Country ... | 0 | - | 4.91 | 217,029 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,364 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,230 |
| Geography of Russia | 0 | - | 4.57 | 21,548 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,989 |
| History of Austria | 0 | - | 4.70 | 17,880 |
| Presidents of France | 0 | - | 4.25 | 24,172 |
| Geography of the French Empire | 0 | - | 4.45 | 27,132 |
| The French Revolution | 0 | - | 4.47 | 24,031 |
| France Multiple Choice | 0 | - | 4.39 | 40,752 |
| History of France | 0 | - | 4.59 | 57,148 |
| Ancient Greek Words | 0 | - | 4.93 | 111,765 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,212 |
| The Vikings! | 0 | - | 4.46 | 28,357 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,173 |
| The Portuguese Empire | 0 | - | 4.58 | 12,076 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,057 |
| American to British Word Translation | 0 | - | 4.14 | 139,200 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,925 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,687 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,570 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,891 |
| Champions League Top 4 | 0 | - | 4.77 | 136,905 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,109 |
| A Quiz About Islam | 0 | - | 4.31 | 48,470 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,904 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,919 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,888 |
| Countries with NO Military | 0 | - | 4.97 | 62,503 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 91,799 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,760 |
| Popular Royal Names | 0 | - | 4.27 | 125,025 |
| Queen in the Answers | 0 | - | 4.29 | 52,957 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,882 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,135 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,587 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,249 |
| People on Money by Country | 0 | - | 4.83 | 60,458 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,717 |
| NATO Countries | 0 | - | 4.98 | 281,050 |
| EU Countries Quiz | 0 | - | 4.99 | 274,959 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,952 |
| Books of the Protestant Bible | 0 | - | 4.84 | 210,461 |
| Astronomy Quiz | 0 | - | 4.90 | 82,716 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,837 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,469 |
