| Regions of Italy | 0 | - | 4.92 | 77,154 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,753 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,698 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,003 |
| States of Germany | 0 | - | 4.95 | 154,680 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,735 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,840 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,425 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,816 |
| Departments of France | 0 | - | 4.93 | 55,245 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,454 |
| England or Wales? | 0 | - | 4.94 | 45,987 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,783 |
| Official European Union Languages | 0 | - | 4.97 | 239,892 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,714 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,089 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,317 |
| Name that Greek Letter | 0 | - | 4.93 | 325,094 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,749 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,340 |
| Italian Foods | 0 | - | 4.30 | 73,313 |
| The Mafia Quiz | 0 | - | 4.46 | 23,442 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,627 |
| Roman Emperors | 0 | - | 4.95 | 121,298 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,069 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,898 |
| History of Italy | 0 | - | 4.55 | 32,161 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,431 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,516 |
| Celtic Nations | 0 | - | 4.61 | 47,108 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,994 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,067 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,911 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,088 |
| Regions of France | 0 | - | 4.70 | 122,208 |
| France Immigration by Country | 0 | - | 4.70 | 76,963 |
| Famous Germans | 0 | - | 4.50 | 55,815 |
| German Groups of Things | 0 | - | 4.47 | 38,645 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,712 |
| Germany True or False? | 0 | - | 4.61 | 49,034 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,479 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,530 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,822 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,417 |
| Counties of England | 0 | - | 4.97 | 803,448 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,868 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,826 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,033 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,128 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,351 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,041 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,822 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,965 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,037 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,661 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,715 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,874 |
| Word Chain - Italy | 0 | - | 4.07 | 23,225 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,168 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,011 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,539 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,589 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,564 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,134 |
| Champions League Winners | 0 | - | 4.92 | 1,016,814 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,772 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,405 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,071 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,393 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,845 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,761 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,031 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,045 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,960 |
| Famous French People | 0 | - | 4.05 | 36,124 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,877 |
| Word Chain - France | 0 | - | 4.38 | 42,948 |
| Germany Country Quiz | 0 | - | 4.82 | 158,916 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,131 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,250 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,054 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,294 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,107 |
| Countries Italy Declared War On | 0 | - | 4.70 | 46,416 |
| History of The Netherlands | 0 | - | 4.46 | 17,561 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,540 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,938 |
| Canary Islands | 0 | - | 4.62 | 17,544 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,996 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,097 |
| British Spellings | 0 | - | 4.06 | 99,614 |
| British Groups of Things | 0 | - | 4.26 | 83,029 |
| British Acronyms | 0 | - | 4.40 | 45,950 |
| UK Immigration by Country | 0 | - | 4.94 | 141,787 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,118 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,113 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,878 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,158 |
| Geography of Scotland | 0 | - | 4.63 | 21,750 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,265 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,862 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,755 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,724 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,371 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,857 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,988 |
| Slavic Languages | 0 | - | 4.67 | 54,719 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,997 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,673 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,151 |
| France A-Z | 0 | - | 4.16 | 38,347 |
| French History Multiple Choice | 0 | - | 4.55 | 33,250 |
| History of Germany | 0 | - | 4.39 | 52,984 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,333 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,225 |
| Roman Names for Places | 0 | - | 4.62 | 58,737 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,643 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,322 |
| Languages of Spain | 0 | - | 4.36 | 23,452 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,922 |
| Switzerland A-Z | 0 | - | 4.45 | 25,776 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,992 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,094 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,112 |
| Malta Country Quiz | 0 | - | 4.81 | 31,244 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,882 |
| Movies Set in France | 0 | - | 4.26 | 13,153 |
| French Inventions | 0 | - | 4.10 | 13,929 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,739 |
| History of Paris | 0 | - | 4.24 | 13,682 |
| Word Chain - Germany | 0 | - | 4.31 | 22,690 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,591 |
| The Trojan War | 0 | - | 4.83 | 40,015 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,043 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,665 |
| Italian Inventions | 0 | - | 3.81 | 18,478 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Famous Nordic People | 0 | - | 4.34 | 20,317 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,438 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,417 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,580 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Name a Valid English City | 0 | - | 4.19 | 16,832 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,818 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,489 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,283 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,683 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,151 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,373 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,208 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,694 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,239 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,853 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,133 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,726 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,108 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,540 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,207 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,477 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,440 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,528 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 66,007 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,565 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,756 |
| Capitals of French Regions | 0 | - | 4.45 | 16,186 |
| Kings of France Quiz | 0 | - | 4.21 | 32,940 |
| Capitals of German States | 0 | - | 4.74 | 29,078 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,557 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,985 |
| Ancient Greek Words | 0 | - | 4.93 | 112,558 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,729 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,270 |
| British to American Food Translation | 0 | - | 3.38 | 52,055 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,583 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,461 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,866 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,777 |
| Australian Capitals | 0 | - | 4.92 | 62,841 |
| European Physical Geography | 0 | - | 4.26 | 33,602 |
| Geography of Russia | 0 | - | 4.57 | 21,607 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,143 |
| History of Austria | 0 | - | 4.70 | 17,980 |
| Austria Country Quiz | 0 | - | 4.57 | 60,076 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,287 |
| France Country Quiz | 0 | - | 4.70 | 135,714 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,377 |
| Geography of the French Empire | 0 | - | 4.45 | 27,221 |
| The French Revolution | 0 | - | 4.47 | 24,153 |
| France Multiple Choice | 0 | - | 4.39 | 40,857 |
| Tour de France Winners | 0 | - | 4.27 | 15,525 |
| History of France | 0 | - | 4.61 | 57,664 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,564 |
| Greece Country Quiz | 0 | - | 4.74 | 66,664 |
| Italy Country Quiz | 0 | - | 4.77 | 124,108 |
| Italian History A-Z | 0 | - | 4.16 | 17,942 |
