| European Countries by First 2 Letters | 0 | - | 4.95 | 532,622 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,050 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,907 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,017 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,931 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,017 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,762 |
| Official European Union Languages | 0 | - | 4.97 | 239,865 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,693 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,031 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,752 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,334 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,065 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,512 |
| Celtic Nations | 0 | - | 4.61 | 47,105 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,888 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,004 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,704 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,473 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,919 |
| Country Logic Puzzle 4x4 – Sudoku style | 0 | - | 5.00 | 28,219 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,267 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,664 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,121 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,178 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,189 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,661 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,218 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,834 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,122 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,706 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,513 |
| Famous Germans | 0 | - | 4.50 | 55,806 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,416 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,854 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,798 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,763 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,605 |
| States of Germany | 0 | - | 4.95 | 154,617 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,720 |
| Regions of Italy | 0 | - | 4.92 | 77,132 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,823 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,393 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,785 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,390 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,843 |
| Champions League Winners | 0 | - | 4.92 | 1,016,593 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,065 |
| Countries Hidden in a Letter #1 | 0 | - | 5.00 | 48,586 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,983 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,994 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,007 |
| Departments of France | 0 | - | 4.93 | 55,219 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,752 |
| England or Wales? | 0 | - | 4.94 | 45,982 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,229 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,330 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,589 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,292 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,059 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,650 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,294 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,677 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,659 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,958 |
| European Geography A-Z | 0 | - | 4.29 | 49,489 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,723 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,355 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,603 |
| Slavic Languages | 0 | - | 4.67 | 54,713 |
| Famous French People | 0 | - | 4.05 | 36,120 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,746 |
| The Mafia Quiz | 0 | - | 4.46 | 23,441 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,633 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,139 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,868 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,974 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,105 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,673 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,145 |
| France A-Z | 0 | - | 4.16 | 38,344 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,203 |
| Name that Greek Letter | 0 | - | 4.93 | 325,066 |
| Switzerland A-Z | 0 | - | 4.45 | 25,773 |
| Random Countries Hidden in the World Map | 0 | - | 4.82 | 114,532 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,879 |
| Famous Russians | 0 | - | 4.16 | 23,915 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,881 |
| Russian History A-Z | 0 | - | 4.35 | 32,243 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,726 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,578 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,244 |
| The Trojan War | 0 | - | 4.83 | 40,005 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,018 |
| Famous Irish People | 0 | - | 4.05 | 46,070 |
| History of Italy | 0 | - | 4.55 | 32,158 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,405 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,612 |
| Roman Emperors | 0 | - | 4.95 | 121,266 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,829 |
| Famous Nordic People | 0 | - | 4.34 | 20,314 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,430 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,580 |
| People on Money - England | 0 | - | 4.29 | 16,645 |
| London A-Z | 0 | - | 4.10 | 40,881 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,018 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,785 |
| Africa A-Z | 0 | - | 4.57 | 46,779 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,462 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,326,244 |
| Country Word Search #2 | 0 | - | 4.54 | 56,795 |
| Country Word Search - Large Edition | 0 | - | 4.68 | 65,292 |
| Australian Capitals | 0 | - | 4.92 | 62,838 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,538 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,451 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,536 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,198 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,472 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,437 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,559 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,752 |
| Capitals of French Regions | 0 | - | 4.45 | 16,185 |
| Regions of France | 0 | - | 4.70 | 122,162 |
| France Immigration by Country | 0 | - | 4.70 | 76,950 |
| German Groups of Things | 0 | - | 4.47 | 38,644 |
| Capitals of German States | 0 | - | 4.74 | 29,076 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,551 |
| Germany True or False? | 0 | - | 4.61 | 49,029 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,509 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,902 |
| Ancient Greek Words | 0 | - | 4.93 | 112,523 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,630 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,798 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,413 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,852 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,575 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,418 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,842 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,486 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,094 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,683 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,232 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,680 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,334 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,333 |
| Middle East A-Z | 0 | - | 4.47 | 46,248 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,596 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,664 |
| Canada A-Z | 0 | - | 4.73 | 32,977 |
| European Physical Geography | 0 | - | 4.26 | 33,600 |
| Geography of Russia | 0 | - | 4.57 | 21,605 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,137 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Geography of the French Empire | 0 | - | 4.45 | 27,221 |
| The French Revolution | 0 | - | 4.47 | 24,150 |
| France Multiple Choice | 0 | - | 4.39 | 40,855 |
| History of France | 0 | - | 4.61 | 57,650 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,562 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,949 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,530 |
| The Vikings! | 0 | - | 4.46 | 28,409 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,396 |
| The Portuguese Empire | 0 | - | 4.58 | 12,113 |
| American to British Word Translation | 0 | - | 4.14 | 139,732 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,067 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,823 |
| Champions League Top 4 | 0 | - | 4.78 | 139,211 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,735 |
| Asia Map Quiz | 0 | - | 4.99 | 925,558 |
| A Quiz About Islam | 0 | - | 4.32 | 48,628 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,194 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,232 |
| Country Word Search #1 | 0 | - | 4.36 | 201,109 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,490 |
| Australia Map Quiz | 0 | - | 4.95 | 346,249 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,067 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 57,970 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,632 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,977 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,927 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,045 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,945 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,912 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,325 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,905 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,234 |
| Country Codes of Europe | 0 | - | 3.45 | 13,838 |
| The Only European Country ... | 0 | - | 4.91 | 219,179 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,604 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,275 |
| Austria... or Australia? | 0 | - | 4.67 | 104,780 |
| Presidents of France | 0 | - | 4.25 | 24,345 |
| Word Chain - France | 0 | - | 4.38 | 42,945 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,247 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,051 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,980 |
