| Netherlands Immigration by Country | 0 | - | 4.93 | 52,416 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,535 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,533 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,026 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,534 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,288 |
| States of Germany | 0 | - | 4.95 | 153,154 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,276 |
| Regions of Italy | 0 | - | 4.92 | 76,223 |
| History of The Netherlands | 0 | - | 4.46 | 17,481 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,372 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,413 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,085 |
| Departments of France | 0 | - | 4.93 | 54,451 |
| Famous Germans | 0 | - | 4.50 | 55,523 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,768 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,612 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,490 |
| England or Wales? | 0 | - | 4.94 | 45,794 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,317 |
| Official European Union Languages | 0 | - | 4.97 | 238,901 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,123 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,005 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,152 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,644 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,290 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,106 |
| Famous French People | 0 | - | 4.07 | 35,842 |
| The Mafia Quiz | 0 | - | 4.46 | 23,369 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,913 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,940 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,719 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| Celtic Nations | 0 | - | 4.69 | 46,996 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,899 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,302 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,698 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,251 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,938 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,254 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,888 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,162 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,975 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,252 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,796 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,851 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,208 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,943 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,644 |
| Regions of France | 0 | - | 4.72 | 121,214 |
| France A-Z | 0 | - | 4.16 | 38,264 |
| France Immigration by Country | 0 | - | 4.70 | 76,676 |
| German Groups of Things | 0 | - | 4.46 | 38,521 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,469 |
| Germany True or False? | 0 | - | 4.61 | 48,890 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,190 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,137 |
| Switzerland A-Z | 0 | - | 4.45 | 25,686 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,338 |
| Counties of England | 0 | - | 4.97 | 798,784 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,436 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,691 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,109 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,740 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,378 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,978 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,793 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,144 |
| Famous Nordic People | 0 | - | 4.34 | 20,165 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,622 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,132 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,150 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,140 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,544 |
| People on Money - England | 0 | - | 4.29 | 16,623 |
| Champions League Winners | 0 | - | 4.92 | 1,009,757 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,690 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,574 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,648 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,209 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,749 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,200 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,565 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,410 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,105 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,850 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,482 |
| European Geography By Letter - O | 0 | - | 4.29 | 62,974 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,116 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,406 |
| European Geography A-Z | 0 | - | 4.29 | 49,359 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,883 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,347 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,610 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,765 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,130 |
| Word Chain - France | 0 | - | 4.38 | 42,838 |
| Germany Country Quiz | 0 | - | 4.83 | 158,165 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,611 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,073 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,650 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,415 |
| Italian Foods | 0 | - | 4.30 | 72,930 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,110 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,197 |
| Canary Islands | 0 | - | 4.62 | 17,491 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,254 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,823 |
| British Spellings | 0 | - | 4.06 | 99,505 |
| British Groups of Things | 0 | - | 4.25 | 82,907 |
| British Acronyms | 0 | - | 4.40 | 45,849 |
| UK Immigration by Country | 0 | - | 4.94 | 141,155 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,054 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,157 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,972 |
| Geography of Scotland | 0 | - | 4.63 | 21,656 |
| Famous Scottish People | 0 | - | 4.22 | 18,411 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,978 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,674 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,869 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,576 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,652 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,629 |
| Slavic Languages | 0 | - | 4.67 | 54,462 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,851 |
| French History Multiple Choice | 0 | - | 4.55 | 33,123 |
| History of Germany | 0 | - | 4.39 | 52,895 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,825 |
| Name that Greek Letter | 0 | - | 4.93 | 324,155 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,662 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,651 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 42,056 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,499 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,758 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,041 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,865 |
| Malta Country Quiz | 0 | - | 4.81 | 31,113 |
| Africa A-Z | 0 | - | 4.57 | 46,677 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,584 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,336 |
| Famous Russians | 0 | - | 4.16 | 23,864 |
| History of Russia Quiz | 0 | - | 4.47 | 31,949 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,772 |
| Russian History A-Z | 0 | - | 4.35 | 31,855 |
| Movies Set in France | 0 | - | 4.26 | 13,131 |
| French Inventions | 0 | - | 4.10 | 13,907 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,357 |
| History of Paris | 0 | - | 4.24 | 13,659 |
| Word Chain - Germany | 0 | - | 4.31 | 22,614 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,194 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,175 |
| The Trojan War | 0 | - | 4.83 | 39,797 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,231 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,491 |
| Famous Irish People | 0 | - | 4.05 | 46,022 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Word Chain - Italy | 0 | - | 4.07 | 23,179 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,948 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,125 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,645 |
| Roman Emperors | 0 | - | 4.95 | 120,380 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,357 |
| Name a Valid English City | 0 | - | 4.19 | 16,746 |
| London A-Z | 0 | - | 4.10 | 40,813 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,182 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,673 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,287 |
| Europe Map Quiz | 0 | - | 5.00 | 4,770,657 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,351 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,008 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,299 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,291 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,541 |
| Capitals of French Regions | 0 | - | 4.45 | 16,108 |
| Kings of France Quiz | 0 | - | 4.20 | 32,814 |
| Capitals of German States | 0 | - | 4.74 | 28,989 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,398 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,842 |
| Ancient Greek Words | 0 | - | 4.93 | 111,897 |
| British to American Food Translation | 0 | - | 3.38 | 51,982 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,489 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,974 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,068 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,254 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,830 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,494 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,005 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,460 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,128 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,027 |
| Middle East A-Z | 0 | - | 4.47 | 46,141 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,319,622 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,600 |
| Oceania Map Quiz | 0 | - | 4.98 | 649,398 |
| Australian Capitals | 0 | - | 4.92 | 62,753 |
| Canada A-Z | 0 | - | 4.73 | 32,887 |
| European Physical Geography | 0 | - | 4.26 | 33,539 |
