| European Countries by First 2 Letters | 0 | - | 4.95 | 532,301 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,984 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,469 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,690 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,502 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,916 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,680 |
| Official European Union Languages | 0 | - | 4.97 | 239,691 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,581 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,681 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,738 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,286 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,042 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,497 |
| Celtic Nations | 0 | - | 4.61 | 47,086 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,574 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,519 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,674 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,415 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,270 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,950 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,243 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,556 |
| European Geography By Letter - D | 0 | - | 4.50 | 111,644 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,838 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,255 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,951 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,452 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,703 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,402 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,279 |
| Famous Germans | 0 | - | 4.50 | 55,770 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,328 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,772 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,719 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,737 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,346 |
| States of Germany | 0 | - | 4.95 | 154,345 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,656 |
| Regions of Italy | 0 | - | 4.92 | 76,970 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,767 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,239 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,718 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,834 |
| Champions League Winners | 0 | - | 4.92 | 1,015,414 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,941 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,342 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,903 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,217 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,999 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,715 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,392 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,019 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,429 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,474 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,764 |
| European Geography A-Z | 0 | - | 4.29 | 49,472 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,718 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,277 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 120,887 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,651 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,790 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,779 |
| Slavic Languages | 0 | - | 4.68 | 54,675 |
| Famous French People | 0 | - | 4.07 | 36,078 |
| Departments of France | 0 | - | 4.93 | 55,068 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,727 |
| The Mafia Quiz | 0 | - | 4.46 | 23,433 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,727 |
| History of The Netherlands | 0 | - | 4.46 | 17,547 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,614 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,095 |
| England or Wales? | 0 | - | 4.94 | 45,946 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,993 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,900 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,067 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,567 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,270 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,790 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,826 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,864 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,668 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,139 |
| France A-Z | 0 | - | 4.16 | 38,327 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,565 |
| Name that Greek Letter | 0 | - | 4.93 | 324,892 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,317 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,414 |
| Switzerland A-Z | 0 | - | 4.45 | 25,758 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,962 |
| Africa A-Z | 0 | - | 4.57 | 46,760 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,324,914 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,953 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,516 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,713 |
| Famous Russians | 0 | - | 4.16 | 23,906 |
| Russian History A-Z | 0 | - | 4.35 | 32,184 |
| Capitals of French Regions | 0 | - | 4.45 | 16,173 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,672 |
| Capitals of German States | 0 | - | 4.74 | 29,064 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,530 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,232 |
| The Trojan War | 0 | - | 4.83 | 39,967 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,878 |
| Famous Irish People | 0 | - | 4.05 | 46,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,562 |
| Roman Emperors | 0 | - | 4.95 | 121,105 |
| Famous Nordic People | 0 | - | 4.34 | 20,290 |
| 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 | 40,874 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,906 |
| Australian Capitals | 0 | - | 4.92 | 62,826 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,503 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,503 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,160 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,441 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,412 |
| Regions of France | 0 | - | 4.70 | 121,990 |
| France Immigration by Country | 0 | - | 4.70 | 76,902 |
| German Groups of Things | 0 | - | 4.47 | 38,623 |
| Germany True or False? | 0 | - | 4.61 | 49,005 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,436 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,557 |
| 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 | 103,768 |
| Famous Scottish People | 0 | - | 4.22 | 18,438 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,415 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,026 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,624 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,162 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,623 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,137 |
| Asia Map Quiz | 0 | - | 4.99 | 924,563 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,281 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,257 |
| Middle East A-Z | 0 | - | 4.47 | 46,233 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,911 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,441 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,413 |
| Canada A-Z | 0 | - | 4.73 | 32,958 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,814 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,890 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,644 |
| European Physical Geography | 0 | - | 4.26 | 33,589 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,999 |
| Country Codes of Europe | 0 | - | 3.43 | 13,805 |
| The Only European Country ... | 0 | - | 4.91 | 218,815 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,415 |
| Geography of Russia | 0 | - | 4.57 | 21,596 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,114 |
| History of Austria | 0 | - | 4.70 | 17,971 |
| Presidents of France | 0 | - | 4.25 | 24,328 |
| Geography of the French Empire | 0 | - | 4.45 | 27,211 |
| The French Revolution | 0 | - | 4.47 | 24,139 |
| France Multiple Choice | 0 | - | 4.39 | 40,835 |
| History of France | 0 | - | 4.61 | 57,571 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,557 |
| Ancient Greek Words | 0 | - | 4.93 | 112,402 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,366 |
| The Portuguese Empire | 0 | - | 4.58 | 12,101 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,112 |
| American to British Word Translation | 0 | - | 4.14 | 139,652 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,048 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,801 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,207 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,733 |
| Champions League Top 4 | 0 | - | 4.78 | 138,865 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,876 |
| A Quiz About Islam | 0 | - | 4.32 | 48,605 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,153 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,786 |
| African East Coast | 0 | - | 4.96 | 96,709 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,558 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,166 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,714 |
| Countries with NO Military | 0 | - | 4.97 | 63,333 |
| Top Arms Exporting Countries | 0 | - | 4.97 | 104,688 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,671 |
| Monarchies of the World | 0 | - | 4.94 | 170,109 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,768 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,031 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 115,165 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,562 |
| People on Money by Country | 0 | - | 4.83 | 60,685 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,058 |
| NATO Countries | 0 | - | 4.98 | 283,211 |
| EU Countries Quiz | 0 | - | 4.99 | 277,620 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,226 |
| Books of the Protestant Bible | 0 | - | 4.84 | 211,814 |
| Astronomy Quiz | 0 | - | 4.90 | 83,222 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 138,361 |
| Solar System Trivia | 0 | - | 4.93 | 47,118 |
