| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,969 |
| Official European Union Languages | 0 | - | 4.97 | 238,018 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,551 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,519 |
| States of Germany | 0 | - | 4.96 | 151,732 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,828 |
| Regions of Italy | 0 | - | 4.92 | 75,482 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,695 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,563 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,943 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,863 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,838 |
| Departments of France | 0 | - | 4.93 | 53,678 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,505 |
| England or Wales? | 0 | - | 4.94 | 45,578 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,296 |
| Slavic Languages | 0 | - | 4.68 | 54,240 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,918 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,855 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,809 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,735 |
| Top African Languages on a Map | 0 | - | 4.93 | 73,557 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,622 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,007 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,209 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,852 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,296 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,275 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,858 |
| Counties of England | 0 | - | 4.97 | 794,296 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,895 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,210 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,413 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,351 |
| Celtic Nations | 0 | - | 4.69 | 46,901 |
| Regions of France | 0 | - | 4.75 | 120,320 |
| France Immigration by Country | 0 | - | 4.70 | 76,365 |
| Famous Germans | 0 | - | 4.50 | 55,105 |
| German Groups of Things | 0 | - | 4.46 | 38,423 |
| Germany True or False? | 0 | - | 4.61 | 48,726 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,200 |
| Italy True or False? | 0 | - | 4.42 | 47,374 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,193 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,224 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,879 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,031 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,570 |
| Champions League Winners | 0 | - | 4.92 | 1,003,212 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,835 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,751 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,622 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,094 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,061 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,478 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,007 |
| Sweden True or False? | 0 | - | 4.56 | 40,231 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,849 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,497 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,962 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,537 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,375 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,432 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,162 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,544 |
| Famous French People | 0 | - | 4.09 | 34,121 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,345 |
| Word Chain - France | 0 | - | 4.38 | 42,726 |
| Germany Country Quiz | 0 | - | 4.82 | 157,486 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,815 |
| Italy Country Quiz | 0 | - | 4.82 | 123,112 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,032 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,737 |
| Italian Foods | 0 | - | 4.30 | 72,598 |
| The Mafia Quiz | 0 | - | 4.46 | 23,291 |
| History of The Netherlands | 0 | - | 4.46 | 17,400 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,605 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,295 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,657 |
| Spain True or False? | 0 | - | 4.58 | 30,595 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,563 |
| British Spellings | 0 | - | 4.06 | 99,394 |
| British Groups of Things | 0 | - | 4.25 | 82,822 |
| British Acronyms | 0 | - | 4.39 | 45,744 |
| UK Immigration by Country | 0 | - | 4.94 | 140,592 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,011 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,313 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,144 |
| Geography of Scotland | 0 | - | 4.63 | 21,580 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,633 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,542 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,459 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,271 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,304 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,699 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,602 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,613 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,038 |
| France A-Z | 0 | - | 4.16 | 38,158 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,017 |
| French History Multiple Choice | 0 | - | 4.55 | 32,991 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,877 |
| History of Germany | 0 | - | 4.39 | 52,769 |
| The Trojan War | 0 | - | 4.83 | 39,629 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,785 |
| Name that Greek Letter | 0 | - | 4.93 | 322,976 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,466 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,596 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,568 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,388 |
| Roman Emperors | 0 | - | 4.95 | 119,592 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,878 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,410 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,572 |
| Languages of Spain | 0 | - | 4.36 | 23,274 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,490 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,043 |
| Switzerland A-Z | 0 | - | 4.45 | 25,612 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,625 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,992 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,664 |
| Malta Country Quiz | 0 | - | 4.81 | 30,987 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,960 |
| History of Russia Quiz | 0 | - | 4.49 | 31,874 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,682 |
| Movies Set in France | 0 | - | 4.26 | 13,108 |
| French Inventions | 0 | - | 4.08 | 13,889 |
| History of Paris | 0 | - | 4.24 | 13,633 |
| Word Chain - Germany | 0 | - | 4.31 | 22,555 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,342 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,425 |
| History of Italy | 0 | - | 4.55 | 31,928 |
| Word Chain - Italy | 0 | - | 4.07 | 23,146 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,602 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,084 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,603 |
| Famous Nordic People | 0 | - | 4.34 | 20,050 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,600 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,153 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,321 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,512 |
| People on Money - England | 0 | - | 4.29 | 16,599 |
| Name a Valid English City | 0 | - | 4.19 | 16,695 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,081 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,645 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,523 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,770 |
| European Geography By Letter - A | 0 | - | 4.52 | 144,044 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,430 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,192 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,942 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,034 |
| European Geography By Letter - M | 0 | - | 4.67 | 129,990 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,140 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,470 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,167 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,733 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,033 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,476 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,189 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,849 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,136 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,164 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,279 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,343 |
| Capitals of French Regions | 0 | - | 4.45 | 16,032 |
| Kings of France Quiz | 0 | - | 4.20 | 32,673 |
| Capitals of German States | 0 | - | 4.74 | 28,918 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,266 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,470 |
| Ancient Greek Words | 0 | - | 4.93 | 111,284 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,972 |
| British to American Food Translation | 0 | - | 3.38 | 51,936 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,399 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,566 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,502 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,410 |
| Famous Scottish People | 0 | - | 4.22 | 18,385 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,538 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,411 |
| Top World Languages | 0 | - | 4.92 | 819,472 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,909 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,133 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,123 |
| Australian Capitals | 0 | - | 4.92 | 62,688 |
| European Physical Geography | 0 | - | 4.26 | 33,452 |
| Geography of Russia | 0 | - | 4.57 | 21,503 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,897 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Austria Country Quiz | 0 | - | 4.57 | 59,607 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,618 |
| France Country Quiz | 0 | - | 4.70 | 134,689 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,090 |
| Geography of the French Empire | 0 | - | 4.45 | 27,017 |
| The French Revolution | 0 | - | 4.46 | 23,894 |
| France Multiple Choice | 0 | - | 4.38 | 40,698 |
| Tour de France Winners | 0 | - | 4.27 | 15,328 |
