| Regions of Spain Quiz | 0 | - | 4.90 | 114,972 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,635 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,822 |
| States of Germany | 0 | - | 4.95 | 153,919 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,507 |
| Regions of Italy | 0 | - | 4.92 | 76,641 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,635 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,583 |
| Departments of France | 0 | - | 4.93 | 54,831 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,694 |
| England or Wales? | 0 | - | 4.94 | 45,885 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,547 |
| Official European Union Languages | 0 | - | 4.97 | 239,393 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,416 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,101 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,512 |
| Name that Greek Letter | 0 | - | 4.93 | 324,618 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,585 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,210 |
| Canary Islands | 0 | - | 4.62 | 17,508 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,990 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,610 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,373 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,466 |
| Celtic Nations | 0 | - | 4.61 | 47,058 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,157 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,867 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,119 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,785 |
| Regions of France | 0 | - | 4.70 | 121,700 |
| France Immigration by Country | 0 | - | 4.70 | 76,821 |
| Famous Germans | 0 | - | 4.50 | 55,650 |
| German Groups of Things | 0 | - | 4.47 | 38,586 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,603 |
| Germany True or False? | 0 | - | 4.61 | 48,957 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,327 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,308 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,042 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,619 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,670 |
| Languages of Spain | 0 | - | 4.36 | 23,394 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,377 |
| Counties of England | 0 | - | 4.97 | 801,043 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,628 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,936 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,867 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,890 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,531 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,587 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,212 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,673 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,802 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,325 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,499 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,856 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,353 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,637 |
| Champions League Winners | 0 | - | 4.92 | 1,012,760 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,681 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,305 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,014 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,253 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,803 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,583 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,040 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,162 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,356 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,870 |
| Famous French People | 0 | - | 4.07 | 35,984 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,494 |
| Word Chain - France | 0 | - | 4.38 | 42,895 |
| Germany Country Quiz | 0 | - | 4.83 | 158,545 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,873 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,165 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,999 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,000 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,860 |
| Italian Foods | 0 | - | 4.30 | 73,108 |
| The Mafia Quiz | 0 | - | 4.46 | 23,408 |
| History of The Netherlands | 0 | - | 4.46 | 17,524 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,092 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,298 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,563 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,558 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,947 |
| British Spellings | 0 | - | 4.06 | 99,551 |
| British Groups of Things | 0 | - | 4.25 | 82,969 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| UK Immigration by Country | 0 | - | 4.94 | 141,440 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,084 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,621 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,428 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,053 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,570 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,630 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,699 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,139 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,224 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,765 |
| Slavic Languages | 0 | - | 4.68 | 54,600 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,210 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,005 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,656 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,113 |
| France A-Z | 0 | - | 4.16 | 38,306 |
| History of Germany | 0 | - | 4.39 | 52,939 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,701 |
| History of Spain | 0 | - | 4.23 | 21,143 |
| Switzerland A-Z | 0 | - | 4.45 | 25,738 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,901 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,070 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,001 |
| Malta Country Quiz | 0 | - | 4.81 | 31,197 |
| History of Russia Quiz | 0 | - | 4.47 | 31,981 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,829 |
| Movies Set in France | 0 | - | 4.26 | 13,139 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,562 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| Word Chain - Germany | 0 | - | 4.31 | 22,657 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,414 |
| The Trojan War | 0 | - | 4.83 | 39,928 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,643 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,086 |
| History of Italy | 0 | - | 4.55 | 32,105 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,173 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,144 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,457 |
| Roman Emperors | 0 | - | 4.95 | 120,843 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,775 |
| Famous Nordic People | 0 | - | 4.34 | 20,234 |
| Geography of Spain | 0 | - | 4.59 | 22,147 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,381 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,562 |
| People on Money - England | 0 | - | 4.29 | 16,634 |
| Name a Valid English City | 0 | - | 4.19 | 16,784 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,258 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,009 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,623 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 120,989 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,509 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,000 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,677 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,998 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,822 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,337 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,556 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,243 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,787 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,442 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,096 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,395 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,362 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,175 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,908 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,409 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,630 |
| Capitals of French Regions | 0 | - | 4.45 | 16,152 |
| Kings of France Quiz | 0 | - | 4.20 | 32,873 |
| Capitals of German States | 0 | - | 4.74 | 29,032 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,476 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,884 |
| Ancient Greek Words | 0 | - | 4.93 | 112,210 |
| British to American Food Translation | 0 | - | 3.38 | 52,014 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,537 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,792 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,533 |
| Famous Scottish People | 0 | - | 4.22 | 18,425 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,739 |
| Australian Capitals | 0 | - | 4.92 | 62,802 |
| European Physical Geography | 0 | - | 4.26 | 33,571 |
| Geography of Russia | 0 | - | 4.57 | 21,573 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,069 |
| History of Austria | 0 | - | 4.70 | 17,949 |
| Austria Country Quiz | 0 | - | 4.57 | 59,959 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,103 |
| France Country Quiz | 0 | - | 4.70 | 135,434 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,298 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| France Multiple Choice | 0 | - | 4.39 | 40,808 |
| Tour de France Winners | 0 | - | 4.27 | 15,469 |
| History of France | 0 | - | 4.61 | 57,453 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,539 |
| Greece Country Quiz | 0 | - | 4.74 | 66,528 |
| Italy Country Quiz | 0 | - | 4.77 | 123,859 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,950 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,403 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,891 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,635 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,805 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,643 |
| The Vikings! | 0 | - | 4.46 | 28,388 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,186 |
| The Portuguese Empire | 0 | - | 4.58 | 12,094 |
| Spain Country Quiz | 0 | - | 4.44 | 129,039 |
