| Netherlands Immigration by Country | 0 | - | 4.94 | 43,981 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,922 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,974 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,515 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,505 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,282 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,037 |
| States of Germany | 0 | - | 4.96 | 150,584 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,190 |
| Regions of Italy | 0 | - | 4.92 | 74,958 |
| History of The Netherlands | 0 | - | 4.46 | 17,343 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,716 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,518 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,981 |
| Departments of France | 0 | - | 4.93 | 53,044 |
| Famous Germans | 0 | - | 4.50 | 54,724 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,717 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,406 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,940 |
| England or Wales? | 0 | - | 4.94 | 45,409 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,728 |
| Official European Union Languages | 0 | - | 4.97 | 237,259 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,094 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,860 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,344 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,484 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,506 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,621 |
| The Mafia Quiz | 0 | - | 4.46 | 23,222 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,620 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,520 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,263 |
| Celtic Nations | 0 | - | 4.69 | 46,841 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,577 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,042 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,006 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,887 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,359 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,142 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,962 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,733 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,108 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,464 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,707 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,517 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,757 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,569 |
| Regions of France | 0 | - | 4.78 | 119,593 |
| France A-Z | 0 | - | 4.16 | 38,091 |
| France Immigration by Country | 0 | - | 4.72 | 76,064 |
| German Groups of Things | 0 | - | 4.46 | 38,345 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,123 |
| Germany True or False? | 0 | - | 4.61 | 48,596 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,640 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,604 |
| Switzerland A-Z | 0 | - | 4.45 | 25,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,100 |
| Counties of England | 0 | - | 4.97 | 790,774 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,134 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,448 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,211 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,543 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,392 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,642 |
| Famous French People | 0 | - | 4.12 | 28,067 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,477 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,964 |
| Famous Nordic People | 0 | - | 4.34 | 19,923 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,557 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,757 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,184 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,378 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,482 |
| People on Money - England | 0 | - | 4.29 | 16,576 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,436 |
| Champions League Winners | 0 | - | 4.92 | 998,448 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,112 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,221 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,098 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,761 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,579 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,350 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,788 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,026 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,638 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,609 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,293 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,023 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,366 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,588 |
| European Geography A-Z | 0 | - | 4.28 | 49,053 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,065 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,661 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,577 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,437 |
| Word Chain - France | 0 | - | 4.38 | 42,621 |
| Germany Country Quiz | 0 | - | 4.82 | 156,850 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,375 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,821 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,803 |
| Italy Country Quiz | 0 | - | 4.82 | 122,450 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,612 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,296 |
| Italian Foods | 0 | - | 4.31 | 72,320 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,241 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,841 |
| Canary Islands | 0 | - | 4.61 | 17,424 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,206 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,269 |
| British Spellings | 0 | - | 4.07 | 99,305 |
| British Groups of Things | 0 | - | 4.25 | 82,729 |
| British Acronyms | 0 | - | 4.39 | 45,666 |
| UK Immigration by Country | 0 | - | 4.94 | 139,910 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,975 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,528 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,572 |
| Geography of Scotland | 0 | - | 4.63 | 21,512 |
| Famous Scottish People | 0 | - | 4.22 | 18,343 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,837 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,613 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,116 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,453 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,226 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,977 |
| Slavic Languages | 0 | - | 4.68 | 54,067 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,570 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,466 |
| French History Multiple Choice | 0 | - | 4.55 | 32,907 |
| History of Germany | 0 | - | 4.39 | 52,670 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,255 |
| Name that Greek Letter | 0 | - | 4.94 | 322,082 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,480 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,288 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,498 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,664 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,503 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,945 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,507 |
| Malta Country Quiz | 0 | - | 4.81 | 30,882 |
| Africa A-Z | 0 | - | 4.57 | 46,422 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,827 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,349 |
| Famous Russians | 0 | - | 4.16 | 23,751 |
| History of Russia Quiz | 0 | - | 4.49 | 31,815 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,607 |
| Movies Set in France | 0 | - | 4.26 | 13,090 |
| French Inventions | 0 | - | 4.08 | 13,869 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,719 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Word Chain - Germany | 0 | - | 4.31 | 22,500 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,595 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,034 |
| The Trojan War | 0 | - | 4.83 | 39,493 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,857 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,704 |
| Famous Irish People | 0 | - | 4.05 | 45,884 |
| History of Italy | 0 | - | 4.55 | 31,861 |
| Word Chain - Italy | 0 | - | 4.07 | 23,114 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,321 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,159 |
| Roman Emperors | 0 | - | 4.95 | 118,784 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,031 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,260 |
| Name a Valid English City | 0 | - | 4.19 | 16,649 |
| London A-Z | 0 | - | 4.10 | 40,672 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,838 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,781 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,844 |
| Europe Map Quiz | 0 | - | 5.00 | 4,738,396 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,050 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,695 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,011 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,046 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,264 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,711 |
| Capitals of French Regions | 0 | - | 4.45 | 16,003 |
| Kings of France Quiz | 0 | - | 4.20 | 32,593 |
| Capitals of German States | 0 | - | 4.74 | 28,864 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,149 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,378 |
| Ancient Greek Words | 0 | - | 4.92 | 110,904 |
| British to American Food Translation | 0 | - | 3.38 | 51,885 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,317 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,563 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,577 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,898 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,463 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,221 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,638 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,135 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,779 |
| Middle East A-Z | 0 | - | 4.47 | 45,860 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,307,487 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,124 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,775 |
| Australian Capitals | 0 | - | 4.92 | 62,613 |
| Canada A-Z | 0 | - | 4.73 | 32,688 |
| European Physical Geography | 0 | - | 4.26 | 33,396 |
| Geography of Russia | 0 | - | 4.57 | 21,452 |
