| Regions of Spain Quiz | 0 | - | 4.90 | 113,698 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,947 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,473 |
| States of Germany | 0 | - | 4.96 | 152,027 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,913 |
| Regions of Italy | 0 | - | 4.92 | 75,635 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,963 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,065 |
| Departments of France | 0 | - | 4.93 | 53,862 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,525 |
| England or Wales? | 0 | - | 4.94 | 45,617 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,024 |
| Official European Union Languages | 0 | - | 4.97 | 238,197 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,653 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,635 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,335 |
| Name that Greek Letter | 0 | - | 4.93 | 323,149 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,426 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,903 |
| Canary Islands | 0 | - | 4.62 | 17,463 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,770 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,903 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,748 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,367 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,248 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,275 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,043 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,822 |
| Regions of France | 0 | - | 4.75 | 120,478 |
| France Immigration by Country | 0 | - | 4.70 | 76,418 |
| Famous Germans | 0 | - | 4.50 | 55,203 |
| German Groups of Things | 0 | - | 4.46 | 38,447 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,298 |
| Germany True or False? | 0 | - | 4.61 | 48,746 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,894 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,897 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,340 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,249 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,587 |
| Languages of Spain | 0 | - | 4.36 | 23,294 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,238 |
| Counties of England | 0 | - | 4.97 | 795,138 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,097 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,596 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,713 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,297 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,421 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,948 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,043 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,750 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,519 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,212 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,581 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,088 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,852 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,080 |
| Champions League Winners | 0 | - | 4.92 | 1,004,360 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,415 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,057 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,868 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,590 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,107 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,720 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,405 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,759 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,631 |
| Famous French People | 0 | - | 4.06 | 35,146 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,508 |
| Word Chain - France | 0 | - | 4.38 | 42,751 |
| Germany Country Quiz | 0 | - | 4.82 | 157,637 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,916 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,950 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,883 |
| Italy Country Quiz | 0 | - | 4.82 | 123,241 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,162 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,843 |
| Italian Foods | 0 | - | 4.30 | 72,672 |
| The Mafia Quiz | 0 | - | 4.46 | 23,301 |
| History of The Netherlands | 0 | - | 4.46 | 17,412 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,014 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,686 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,416 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,779 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,624 |
| British Spellings | 0 | - | 4.06 | 99,413 |
| British Groups of Things | 0 | - | 4.25 | 82,841 |
| British Acronyms | 0 | - | 4.39 | 45,768 |
| UK Immigration by Country | 0 | - | 4.94 | 140,723 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,023 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,521 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,279 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,701 |
| Geography of Scotland | 0 | - | 4.63 | 21,599 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,937 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,958 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,569 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,645 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,527 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,566 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,362 |
| Slavic Languages | 0 | - | 4.68 | 54,286 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,352 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,728 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,050 |
| France A-Z | 0 | - | 4.16 | 38,180 |
| History of Germany | 0 | - | 4.39 | 52,787 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| History of Spain | 0 | - | 4.23 | 21,071 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,642 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,006 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,706 |
| Malta Country Quiz | 0 | - | 4.81 | 31,013 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,940 |
| History of Russia Quiz | 0 | - | 4.49 | 31,886 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,703 |
| Movies Set in France | 0 | - | 4.26 | 13,115 |
| French Inventions | 0 | - | 4.08 | 13,891 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,081 |
| History of Paris | 0 | - | 4.24 | 13,641 |
| Word Chain - Germany | 0 | - | 4.31 | 22,567 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,932 |
| The Trojan War | 0 | - | 4.83 | 39,658 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,583 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,600 |
| History of Italy | 0 | - | 4.55 | 31,941 |
| Word Chain - Italy | 0 | - | 4.07 | 23,151 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,667 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,089 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,437 |
| Roman Emperors | 0 | - | 4.95 | 119,714 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,625 |
| Famous Nordic People | 0 | - | 4.34 | 20,074 |
| Geography of Spain | 0 | - | 4.59 | 22,059 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,329 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,518 |
| People on Money - England | 0 | - | 4.29 | 16,606 |
| Name a Valid English City | 0 | - | 4.19 | 16,705 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,758 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,447 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,697 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,427 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,147 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,195 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,220 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,287 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,609 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,501 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,830 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,191 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,781 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,218 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,879 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,169 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,195 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,417 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,646 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,375 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Kings of France Quiz | 0 | - | 4.20 | 32,691 |
| Capitals of German States | 0 | - | 4.74 | 28,934 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,292 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,734 |
| Ancient Greek Words | 0 | - | 4.93 | 111,395 |
| British to American Food Translation | 0 | - | 3.38 | 51,949 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,416 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,752 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,498 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| Song Title Translation - Spanish | 0 | - | 4.57 | 35,798 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,192 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,878 |
| Australian Capitals | 0 | - | 4.92 | 62,700 |
| European Physical Geography | 0 | - | 4.26 | 33,479 |
| Geography of Russia | 0 | - | 4.57 | 21,513 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,917 |
| History of Austria | 0 | - | 4.70 | 17,839 |
| Austria Country Quiz | 0 | - | 4.57 | 59,652 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,686 |
| France Country Quiz | 0 | - | 4.70 | 134,803 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,118 |
| Geography of the French Empire | 0 | - | 4.45 | 27,030 |
| The French Revolution | 0 | - | 4.46 | 23,911 |
| France Multiple Choice | 0 | - | 4.39 | 40,716 |
| Tour de France Winners | 0 | - | 4.27 | 15,346 |
| History of France | 0 | - | 4.59 | 56,860 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Greece Country Quiz | 0 | - | 4.74 | 66,163 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,453 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,024 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,704 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,447 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,413 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,395 |
| The Vikings! | 0 | - | 4.46 | 28,321 |
