| European Countries by First 2 Letters | 0 | - | 4.95 | 528,928 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,270 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,458 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,028 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,747 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,017 |
| Official European Union Languages | 0 | - | 4.97 | 238,194 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,651 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,629 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,567 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,898 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,769 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,366 |
| Celtic Nations | 0 | - | 4.69 | 46,910 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,038 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,806 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,297 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,894 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,658 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,415 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,686 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,416 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,138 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,190 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,212 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,283 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,604 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,460 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,829 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,184 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,412 |
| Famous Germans | 0 | - | 4.50 | 55,199 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,333 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,212 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,942 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,415 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,499 |
| States of Germany | 0 | - | 4.96 | 152,015 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,913 |
| Regions of Italy | 0 | - | 4.92 | 75,626 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,952 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,691 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,045 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,663 |
| Champions League Winners | 0 | - | 4.92 | 1,004,300 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,418 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,587 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,296 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,620 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,791 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,445 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,282 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,938 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,544 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,779 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,043 |
| European Geography A-Z | 0 | - | 4.29 | 49,213 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,644 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,524 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,550 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,710 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,397 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,752 |
| Slavic Languages | 0 | - | 4.68 | 54,285 |
| Famous French People | 0 | - | 4.06 | 35,118 |
| Departments of France | 0 | - | 4.93 | 53,852 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| The Mafia Quiz | 0 | - | 4.46 | 23,300 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,524 |
| History of The Netherlands | 0 | - | 4.46 | 17,412 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,425 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,701 |
| England or Wales? | 0 | - | 4.94 | 45,616 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,911 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,935 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,360 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,727 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,753 |
| Africa A-Z | 0 | - | 4.57 | 46,574 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,895 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,449 |
| History of Russia Quiz | 0 | - | 4.49 | 31,883 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,701 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,050 |
| France A-Z | 0 | - | 4.16 | 38,180 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,305 |
| Name that Greek Letter | 0 | - | 4.93 | 323,142 |
| History of Italy | 0 | - | 4.55 | 31,940 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,665 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,621 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,441 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,269 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,664 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,374 |
| Famous Russians | 0 | - | 4.16 | 23,821 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Capitals of German States | 0 | - | 4.74 | 28,934 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,292 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,120 |
| The Trojan War | 0 | - | 4.83 | 39,657 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,579 |
| Famous Irish People | 0 | - | 4.05 | 45,983 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,436 |
| Roman Emperors | 0 | - | 4.95 | 119,703 |
| Famous Nordic People | 0 | - | 4.34 | 20,072 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,518 |
| People on Money - England | 0 | - | 4.29 | 16,606 |
| London A-Z | 0 | - | 4.10 | 40,748 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,159 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,833 |
| Australian Capitals | 0 | - | 4.92 | 62,699 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,097 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,216 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,877 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,166 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,192 |
| Regions of France | 0 | - | 4.75 | 120,466 |
| France Immigration by Country | 0 | - | 4.70 | 76,416 |
| German Groups of Things | 0 | - | 4.46 | 38,445 |
| Germany True or False? | 0 | - | 4.61 | 48,744 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,894 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,715 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,249 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,238 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,094 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,083 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,635 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,368 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,832 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,310 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,950 |
| Asia Map Quiz | 0 | - | 4.99 | 914,878 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,959 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,776 |
| Middle East A-Z | 0 | - | 4.47 | 45,978 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,898 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,650 |
| African East Coast | 0 | - | 4.96 | 95,859 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,660 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,504 |
| Canada A-Z | 0 | - | 4.73 | 32,784 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,830 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,589 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,612 |
| European Physical Geography | 0 | - | 4.26 | 33,478 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,891 |
| Country Codes of Europe | 0 | - | 3.43 | 13,700 |
| The Only European Country ... | 0 | - | 4.91 | 216,065 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,820 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,060 |
| Geography of Russia | 0 | - | 4.57 | 21,511 |
| Russian History A-Z | 0 | - | 4.38 | 31,611 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,916 |
| History of Austria | 0 | - | 4.70 | 17,838 |
| Presidents of France | 0 | - | 4.25 | 24,043 |
| Geography of the French Empire | 0 | - | 4.45 | 27,030 |
| The French Revolution | 0 | - | 4.46 | 23,910 |
| France Multiple Choice | 0 | - | 4.39 | 40,716 |
| History of France | 0 | - | 4.59 | 56,858 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Ancient Greek Words | 0 | - | 4.93 | 111,389 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,022 |
| The Vikings! | 0 | - | 4.46 | 28,321 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,055 |
| The Portuguese Empire | 0 | - | 4.58 | 12,050 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,014 |
| American to British Word Translation | 0 | - | 4.14 | 138,793 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,867 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,620 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,735 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,493 |
| Champions League Top 4 | 0 | - | 4.77 | 135,899 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,698 |
| A Quiz About Islam | 0 | - | 4.31 | 48,404 |
| Countries That Don't Recognize Israel | 0 | - | 4.67 | 34,767 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,539 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,037 |
| Countries with NO Military | 0 | - | 4.97 | 62,001 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 90,914 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,042 |
| Monarchies of the World | 0 | - | 4.94 | 168,315 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,380 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,622 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,126 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,017 |
| People on Money by Country | 0 | - | 4.83 | 60,299 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,422 |
| NATO Countries | 0 | - | 4.98 | 279,402 |
| EU Countries Quiz | 0 | - | 4.99 | 273,017 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,829 |
| Books of the Protestant Bible | 0 | - | 4.89 | 209,489 |
| Astronomy Quiz | 0 | - | 4.90 | 82,427 |
| Solar System Trivia | 0 | - | 4.93 | 46,519 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,579 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,267 |
