| States of Germany | 0 | - | 4.96 | 151,765 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,851 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,562 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,278 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,862 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,946 |
| Regions of Italy | 0 | - | 4.92 | 75,500 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,766 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,594 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,953 |
| Departments of France | 0 | - | 4.93 | 53,719 |
| Famous Germans | 0 | - | 4.50 | 55,132 |
| German Groups of Things | 0 | - | 4.46 | 38,427 |
| Germany True or False? | 0 | - | 4.61 | 48,731 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,511 |
| England or Wales? | 0 | - | 4.94 | 45,588 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,979 |
| Official European Union Languages | 0 | - | 4.97 | 238,055 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,571 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,352 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,903 |
| Name that Greek Letter | 0 | - | 4.93 | 323,028 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,863 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,886 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,742 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,822 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,587 |
| 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 | 218,063 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,224 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,904 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,446 |
| Regions of France | 0 | - | 4.75 | 120,352 |
| France Immigration by Country | 0 | - | 4.70 | 76,375 |
| Capitals of German States | 0 | - | 4.74 | 28,923 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,274 |
| History of Germany | 0 | - | 4.39 | 52,771 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,846 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,236 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,201 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,229 |
| Counties of England | 0 | - | 4.97 | 794,472 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,039 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,573 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,015 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,223 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,859 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,856 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,643 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,196 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,086 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,491 |
| Word Chain - Germany | 0 | - | 4.31 | 22,559 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,939 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,512 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,981 |
| Champions League Winners | 0 | - | 4.92 | 1,003,434 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,380 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,458 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,018 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,852 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,548 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,655 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,054 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,488 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,221 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,585 |
| Famous French People | 0 | - | 4.06 | 34,481 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,392 |
| Word Chain - France | 0 | - | 4.38 | 42,731 |
| Germany Country Quiz | 0 | - | 4.82 | 157,518 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,841 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,925 |
| 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 | 149,064 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,781 |
| Italian Foods | 0 | - | 4.30 | 72,616 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,637 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,327 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,673 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,574 |
| British Spellings | 0 | - | 4.06 | 99,398 |
| British Groups of Things | 0 | - | 4.25 | 82,826 |
| British Acronyms | 0 | - | 4.39 | 45,751 |
| UK Immigration by Country | 0 | - | 4.94 | 140,623 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,360 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,169 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,649 |
| Geography of Scotland | 0 | - | 4.63 | 21,583 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,673 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,902 |
| 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 | 114,309 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,328 |
| Slavic Languages | 0 | - | 4.68 | 54,253 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,114 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,703 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,608 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,615 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,040 |
| France A-Z | 0 | - | 4.16 | 38,163 |
| Geography of Germany | 0 | - | 4.35 | 17,157 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,569 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,413 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,577 |
| Languages of Spain | 0 | - | 4.36 | 23,278 |
| Switzerland A-Z | 0 | - | 4.45 | 25,615 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,627 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,669 |
| Malta Country Quiz | 0 | - | 4.81 | 30,991 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,806 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,686 |
| Movies Set in France | 0 | - | 4.26 | 13,109 |
| French Inventions | 0 | - | 4.08 | 13,889 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,030 |
| History of Paris | 0 | - | 4.24 | 13,634 |
| The Trojan War | 0 | - | 4.83 | 39,637 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,494 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,448 |
| History of Italy | 0 | - | 4.55 | 31,930 |
| Word Chain - Italy | 0 | - | 4.07 | 23,146 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,618 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,084 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,398 |
| Roman Emperors | 0 | - | 4.95 | 119,623 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,606 |
| Famous Nordic People | 0 | - | 4.34 | 20,059 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,605 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,155 |
| 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 | 278,578 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,611 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,537 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,279 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,021 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,089 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,073 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,182 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,520 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,204 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,766 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,086 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,269 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,195 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,853 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,141 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,171 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,319 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,617 |
| 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 | 32,677 |
| German Loan Words | 0 | - | 4.27 | 135,710 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,415 |
| Ancient Greek Words | 0 | - | 4.93 | 111,301 |
| British to American Food Translation | 0 | - | 3.38 | 51,938 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,403 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,551 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,426 |
| Famous Scottish People | 0 | - | 4.22 | 18,387 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,173 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,277 |
| Australian Capitals | 0 | - | 4.92 | 62,691 |
| European Physical Geography | 0 | - | 4.26 | 33,464 |
| 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 | 59,616 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,631 |
| France Country Quiz | 0 | - | 4.70 | 134,713 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,102 |
| Geography of the French Empire | 0 | - | 4.45 | 27,018 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| France Multiple Choice | 0 | - | 4.38 | 40,700 |
| Tour de France Winners | 0 | - | 4.27 | 15,331 |
| History of France | 0 | - | 4.59 | 56,796 |
| Bundesliga Champions | 0 | - | 4.25 | 56,264 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,400 |
| German History A-Z | 0 | - | 4.49 | 24,565 |
| German Inventions | 0 | - | 3.91 | 30,219 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,614 |
| Greece Country Quiz | 0 | - | 4.74 | 66,107 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,972 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,982 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,679 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,424 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,358 |
