| Netherlands Immigration by Country | 0 | - | 4.93 | 50,397 |
| England or Wales? | 0 | - | 4.94 | 45,510 |
| Germany True or False? | 0 | - | 4.61 | 48,670 |
| Italy True or False? | 0 | - | 4.42 | 47,337 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,519 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,993 |
| Australia True or False | 0 | - | 4.87 | 56,697 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,213 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,242 |
| States of Germany | 0 | - | 4.96 | 151,252 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,630 |
| Regions of Italy | 0 | - | 4.92 | 75,287 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,278 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,791 |
| Departments of France | 0 | - | 4.93 | 53,431 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,458 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,882 |
| Official European Union Languages | 0 | - | 4.97 | 237,756 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,380 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,729 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,774 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,688 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,655 |
| French History Multiple Choice | 0 | - | 4.55 | 32,960 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,503 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,578 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,326 |
| Celtic Nations | 0 | - | 4.69 | 46,879 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,139 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,475 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,677 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,005 |
| Regions of France | 0 | - | 4.77 | 120,048 |
| France Immigration by Country | 0 | - | 4.72 | 76,254 |
| Famous Germans | 0 | - | 4.50 | 54,866 |
| German Groups of Things | 0 | - | 4.46 | 38,393 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,786 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,758 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,942 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,107 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,164 |
| Counties of England | 0 | - | 4.97 | 793,023 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,875 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,859 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,341 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,643 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,655 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,729 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,413 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,530 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,891 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,264 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,497 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,386 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,721 |
| Champions League Winners | 0 | - | 4.92 | 1,001,302 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,310 |
| France Multiple Choice | 0 | - | 4.38 | 40,686 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,921 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,464 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,263 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,625 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,970 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,826 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,194 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,098 |
| Word Chain - France | 0 | - | 4.38 | 42,686 |
| Germany Country Quiz | 0 | - | 4.82 | 157,271 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,647 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,880 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,846 |
| Italy Country Quiz | 0 | - | 4.82 | 122,753 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,892 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,553 |
| Italian Foods | 0 | - | 4.31 | 72,496 |
| The Mafia Quiz | 0 | - | 4.46 | 23,257 |
| History of The Netherlands | 0 | - | 4.46 | 17,373 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,485 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,109 |
| Canary Islands | 0 | - | 4.61 | 17,444 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,497 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,472 |
| British Spellings | 0 | - | 4.06 | 99,365 |
| British Groups of Things | 0 | - | 4.25 | 82,795 |
| British Acronyms | 0 | - | 4.39 | 45,717 |
| UK Immigration by Country | 0 | - | 4.94 | 140,437 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,999 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,050 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,938 |
| Geography of Scotland | 0 | - | 4.63 | 21,561 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,358 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,517 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,630 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,333 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,961 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,174 |
| Slavic Languages | 0 | - | 4.68 | 54,179 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,652 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,548 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,594 |
| France A-Z | 0 | - | 4.16 | 38,119 |
| History of Germany | 0 | - | 4.39 | 52,736 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,949 |
| Name that Greek Letter | 0 | - | 4.93 | 322,659 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,532 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,752 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,371 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,544 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,384 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,900 |
| Switzerland A-Z | 0 | - | 4.45 | 25,586 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,588 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,974 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,603 |
| Malta Country Quiz | 0 | - | 4.81 | 30,950 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,483 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,129 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,641 |
| History of Russia Quiz | 0 | - | 4.49 | 31,855 |
| Famous French People | 0 | - | 4.12 | 28,154 |
| Movies Set in France | 0 | - | 4.26 | 13,100 |
| French Inventions | 0 | - | 4.08 | 13,881 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,916 |
| History of Paris | 0 | - | 4.24 | 13,631 |
| Word Chain - Germany | 0 | - | 4.31 | 22,535 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,793 |
| The Trojan War | 0 | - | 4.83 | 39,586 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,245 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,175 |
| History of Italy | 0 | - | 4.55 | 31,910 |
| Word Chain - Italy | 0 | - | 4.07 | 23,138 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,073 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,316 |
| Roman Emperors | 0 | - | 4.95 | 119,366 |
| Famous Nordic People | 0 | - | 4.34 | 20,002 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,571 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,107 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,307 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,503 |
| People on Money - England | 0 | - | 4.29 | 16,591 |
| Name a Valid English City | 0 | - | 4.19 | 16,683 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,070 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,527 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,273 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,622 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,713 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,149 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,127 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,010 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,466 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,367 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,048 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,825 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,456 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,634 |
| Europe Map Quiz | 0 | - | 5.00 | 4,747,995 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,151 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,800 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,089 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,131 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,817 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,276 |
| Capitals of French Regions | 0 | - | 4.45 | 16,022 |
| Kings of France Quiz | 0 | - | 4.20 | 32,638 |
| Capitals of German States | 0 | - | 4.74 | 28,900 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,222 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,654 |
| Ancient Greek Words | 0 | - | 4.93 | 111,159 |
| British to American Food Translation | 0 | - | 3.38 | 51,913 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,368 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,162 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,201 |
| Famous Scottish People | 0 | - | 4.22 | 18,364 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,432 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,947 |
| Australian Capitals | 0 | - | 4.92 | 62,669 |
| European Physical Geography | 0 | - | 4.26 | 33,434 |
| Geography of Russia | 0 | - | 4.57 | 21,488 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,871 |
| History of Austria | 0 | - | 4.70 | 17,810 |
| Austria Country Quiz | 0 | - | 4.57 | 59,552 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,524 |
| France Country Quiz | 0 | - | 4.70 | 134,550 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,050 |
| Geography of the French Empire | 0 | - | 4.45 | 27,003 |
| The French Revolution | 0 | - | 4.46 | 23,872 |
| Tour de France Winners | 0 | - | 4.27 | 15,303 |
| History of France | 0 | - | 4.59 | 56,659 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,440 |
| Greece Country Quiz | 0 | - | 4.74 | 66,012 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,340 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,862 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,625 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,377 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,269 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,286 |
| The Vikings! | 0 | - | 4.46 | 28,291 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,623 |
| The Portuguese Empire | 0 | - | 4.58 | 12,034 |
| Spain Country Quiz | 0 | - | 4.45 | 128,102 |
