| States of Germany | 0 | - | 4.95 | 152,959 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,203 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,201 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,417 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,140 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,227 |
| Regions of Italy | 0 | - | 4.92 | 76,118 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,348 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,220 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,336 |
| Departments of France | 0 | - | 4.93 | 54,348 |
| Famous Germans | 0 | - | 4.50 | 55,448 |
| German Groups of Things | 0 | - | 4.46 | 38,500 |
| Germany True or False? | 0 | - | 4.61 | 48,858 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,590 |
| England or Wales? | 0 | - | 4.94 | 45,758 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,266 |
| Official European Union Languages | 0 | - | 4.97 | 238,787 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,039 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,719 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,394 |
| Name that Greek Letter | 0 | - | 4.93 | 324,062 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,062 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,138 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,881 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,250 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,292 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,412 |
| Celtic Nations | 0 | - | 4.69 | 46,974 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,143 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,482 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,989 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,538 |
| Regions of France | 0 | - | 4.72 | 121,079 |
| France Immigration by Country | 0 | - | 4.70 | 76,625 |
| Capitals of German States | 0 | - | 4.74 | 28,977 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,379 |
| History of Germany | 0 | - | 4.39 | 52,876 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,102 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,660 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,459 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,317 |
| Counties of England | 0 | - | 4.97 | 798,193 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,366 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,673 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,473 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,577 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,291 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,811 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,186 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,765 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,691 |
| States of Germany Map Quiz | 0 | - | 4.91 | 133,043 |
| Word Chain - Germany | 0 | - | 4.31 | 22,603 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,957 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,093 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,010 |
| Champions League Winners | 0 | - | 4.91 | 1,008,840 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,545 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,187 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,930 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,118 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,729 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,323 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,699 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,191 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,441 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,742 |
| Famous French People | 0 | - | 4.07 | 35,761 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,003 |
| Word Chain - France | 0 | - | 4.38 | 42,813 |
| Germany Country Quiz | 0 | - | 4.83 | 158,083 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,533 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,050 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,939 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,566 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,218 |
| Italian Foods | 0 | - | 4.30 | 72,879 |
| The Mafia Quiz | 0 | - | 4.46 | 23,357 |
| History of The Netherlands | 0 | - | 4.46 | 17,465 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,048 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,866 |
| Canary Islands | 0 | - | 4.62 | 17,488 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,175 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,786 |
| British Spellings | 0 | - | 4.06 | 99,485 |
| British Groups of Things | 0 | - | 4.25 | 82,895 |
| British Acronyms | 0 | - | 4.40 | 45,827 |
| UK Immigration by Country | 0 | - | 4.94 | 141,070 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,049 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,059 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,864 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,898 |
| Geography of Scotland | 0 | - | 4.63 | 21,643 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,820 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,276 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,628 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,669 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,814 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,411 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,570 |
| Slavic Languages | 0 | - | 4.68 | 54,432 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,305 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,830 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,634 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,079 |
| France A-Z | 0 | - | 4.16 | 38,241 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,495 |
| Geography of Germany | 0 | - | 4.35 | 17,200 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,643 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,501 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,636 |
| Languages of Spain | 0 | - | 4.36 | 23,343 |
| Switzerland A-Z | 0 | - | 4.45 | 25,669 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,735 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,032 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,826 |
| Malta Country Quiz | 0 | - | 4.81 | 31,097 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,476 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,762 |
| Movies Set in France | 0 | - | 4.26 | 13,126 |
| French Inventions | 0 | - | 4.08 | 13,902 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,313 |
| History of Paris | 0 | - | 4.24 | 13,657 |
| The Trojan War | 0 | - | 4.83 | 39,775 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,078 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,329 |
| History of Italy | 0 | - | 4.55 | 32,032 |
| Word Chain - Italy | 0 | - | 4.07 | 23,175 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,892 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,120 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,609 |
| Roman Emperors | 0 | - | 4.95 | 120,279 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,705 |
| Famous Nordic People | 0 | - | 4.34 | 20,155 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,620 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,282 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,351 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,538 |
| People on Money - England | 0 | - | 4.29 | 16,621 |
| Name a Valid English City | 0 | - | 4.19 | 16,738 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,460 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,510 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,948 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,202 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,825 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,666 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,886 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,678 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,975 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,823 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,117 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,581 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,186 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,328 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,989 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,274 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,276 |
| European Geography By Letter - S #1 | 0 | - | 4.62 | 100,713 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,785 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,518 |
| Capitals of French Regions | 0 | - | 4.45 | 16,096 |
| Kings of France Quiz | 0 | - | 4.20 | 32,791 |
| German Loan Words | 0 | - | 4.27 | 135,851 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,542 |
| Ancient Greek Words | 0 | - | 4.93 | 111,812 |
| British to American Food Translation | 0 | - | 3.38 | 51,975 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,474 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,715 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,940 |
| Famous Scottish People | 0 | - | 4.22 | 18,408 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,507 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,370 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| European Physical Geography | 0 | - | 4.26 | 33,531 |
| Geography of Russia | 0 | - | 4.57 | 21,550 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,992 |
| History of Austria | 0 | - | 4.70 | 17,888 |
| Austria Country Quiz | 0 | - | 4.57 | 59,809 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,897 |
| France Country Quiz | 0 | - | 4.70 | 135,112 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,211 |
| Geography of the French Empire | 0 | - | 4.45 | 27,145 |
| The French Revolution | 0 | - | 4.47 | 24,038 |
| France Multiple Choice | 0 | - | 4.39 | 40,757 |
| Tour de France Winners | 0 | - | 4.27 | 15,401 |
| History of France | 0 | - | 4.59 | 57,202 |
| Bundesliga Champions | 0 | - | 4.25 | 56,711 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,653 |
| German History A-Z | 0 | - | 4.49 | 24,642 |
| German Inventions | 0 | - | 3.91 | 30,244 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,646 |
| Greece Country Quiz | 0 | - | 4.74 | 66,339 |
| Italy Country Quiz | 0 | - | 4.77 | 123,539 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,665 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,225 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,807 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,544 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,601 |
