| Regions of Spain Quiz | 0 | - | 4.90 | 113,595 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,572 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,974 |
| States of Germany | 0 | - | 4.96 | 151,774 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,852 |
| Regions of Italy | 0 | - | 4.92 | 75,505 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,773 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,970 |
| Departments of France | 0 | - | 4.93 | 53,720 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,511 |
| England or Wales? | 0 | - | 4.94 | 45,589 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,982 |
| Official European Union Languages | 0 | - | 4.97 | 238,068 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,576 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,360 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,918 |
| Name that Greek Letter | 0 | - | 4.93 | 323,029 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,415 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,864 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,742 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,824 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,156 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,592 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,353 |
| Celtic Nations | 0 | - | 4.69 | 46,905 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,080 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,227 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,904 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,458 |
| Regions of France | 0 | - | 4.75 | 120,360 |
| France Immigration by Country | 0 | - | 4.70 | 76,377 |
| Famous Germans | 0 | - | 4.50 | 55,136 |
| German Groups of Things | 0 | - | 4.46 | 38,430 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,278 |
| Germany True or False? | 0 | - | 4.61 | 48,732 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,862 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,851 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,242 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,203 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,577 |
| Languages of Spain | 0 | - | 4.36 | 23,278 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,229 |
| Counties of England | 0 | - | 4.97 | 794,508 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,043 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,573 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,036 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,224 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,865 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,871 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,649 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,207 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,089 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,500 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,606 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,950 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,515 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,987 |
| Champions League Winners | 0 | - | 4.92 | 1,003,463 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,380 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,019 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,852 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,549 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,655 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,057 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,497 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,227 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,594 |
| Famous French People | 0 | - | 4.06 | 34,540 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,396 |
| Word Chain - France | 0 | - | 4.38 | 42,731 |
| Germany Country Quiz | 0 | - | 4.82 | 157,524 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,845 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,928 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,874 |
| Italy Country Quiz | 0 | - | 4.82 | 123,152 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,070 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,788 |
| Italian Foods | 0 | - | 4.30 | 72,618 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,008 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,638 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,331 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,680 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,575 |
| British Spellings | 0 | - | 4.06 | 99,399 |
| British Groups of Things | 0 | - | 4.25 | 82,828 |
| British Acronyms | 0 | - | 4.39 | 45,751 |
| UK Immigration by Country | 0 | - | 4.94 | 140,628 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,365 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,177 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,649 |
| Geography of Scotland | 0 | - | 4.63 | 21,585 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,682 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,906 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,547 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,467 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,316 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,331 |
| Slavic Languages | 0 | - | 4.68 | 54,253 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,121 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,704 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,610 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,616 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,041 |
| France A-Z | 0 | - | 4.16 | 38,165 |
| History of Germany | 0 | - | 4.39 | 52,773 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,570 |
| History of Spain | 0 | - | 4.23 | 21,068 |
| Switzerland A-Z | 0 | - | 4.45 | 25,617 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,628 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,673 |
| Malta Country Quiz | 0 | - | 4.81 | 30,993 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,812 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,687 |
| Movies Set in France | 0 | - | 4.26 | 13,110 |
| French Inventions | 0 | - | 4.08 | 13,889 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,032 |
| History of Paris | 0 | - | 4.24 | 13,635 |
| Word Chain - Germany | 0 | - | 4.31 | 22,559 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,890 |
| The Trojan War | 0 | - | 4.83 | 39,638 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,497 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,458 |
| History of Italy | 0 | - | 4.55 | 31,930 |
| Word Chain - Italy | 0 | - | 4.07 | 23,146 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,620 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,084 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,398 |
| Roman Emperors | 0 | - | 4.95 | 119,625 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,606 |
| Famous Nordic People | 0 | - | 4.34 | 20,060 |
| Geography of Spain | 0 | - | 4.59 | 22,044 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,323 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,515 |
| People on Money - England | 0 | - | 4.29 | 16,600 |
| Name a Valid English City | 0 | - | 4.19 | 16,698 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,580 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,685 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,550 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,289 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,027 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,092 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,080 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,184 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,524 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,207 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,773 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,090 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,381 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,198 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,856 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,144 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,171 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,325 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,620 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,349 |
| Capitals of French Regions | 0 | - | 4.45 | 16,033 |
| Kings of France Quiz | 0 | - | 4.20 | 32,679 |
| Capitals of German States | 0 | - | 4.74 | 28,923 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,275 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,426 |
| Ancient Greek Words | 0 | - | 4.93 | 111,303 |
| British to American Food Translation | 0 | - | 3.38 | 51,938 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,405 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,564 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,432 |
| Famous Scottish People | 0 | - | 4.22 | 18,387 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,228 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,306 |
| Australian Capitals | 0 | - | 4.92 | 62,691 |
| European Physical Geography | 0 | - | 4.26 | 33,465 |
| Geography of Russia | 0 | - | 4.57 | 21,507 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,899 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,618 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,633 |
| France Country Quiz | 0 | - | 4.70 | 134,717 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,103 |
| Geography of the French Empire | 0 | - | 4.45 | 27,019 |
| The French Revolution | 0 | - | 4.46 | 23,897 |
| France Multiple Choice | 0 | - | 4.38 | 40,700 |
| Tour de France Winners | 0 | - | 4.27 | 15,333 |
| History of France | 0 | - | 4.59 | 56,800 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,460 |
| Greece Country Quiz | 0 | - | 4.74 | 66,110 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,993 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,983 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,681 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,425 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,358 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,367 |
| The Vikings! | 0 | - | 4.46 | 28,317 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,725 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
