| Regions of Italy | 0 | - | 4.92 | 74,826 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,386 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,621 |
| States of Germany | 0 | - | 4.96 | 150,278 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,105 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,894 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,477 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,346 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,812 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,607 |
| Departments of France | 0 | - | 4.93 | 52,928 |
| England or Wales? | 0 | - | 4.94 | 45,363 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,638 |
| Official European Union Languages | 0 | - | 4.97 | 237,059 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,775 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,506 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,507 |
| Name that Greek Letter | 0 | - | 4.94 | 321,824 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,445 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,110 |
| Roman Emperors | 0 | - | 4.95 | 118,608 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,571 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,222 |
| Italian Foods | 0 | - | 4.31 | 72,248 |
| History of Italy | 0 | - | 4.55 | 31,840 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,226 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,585 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,588 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,549 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,914 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,044 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,193 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,069 |
| Counties of England | 0 | - | 4.97 | 789,891 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,480 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,759 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,252 |
| Celtic Nations | 0 | - | 4.69 | 46,826 |
| Regions of France | 0 | - | 4.78 | 119,391 |
| France Immigration by Country | 0 | - | 4.72 | 76,009 |
| Famous Germans | 0 | - | 4.50 | 54,659 |
| German Groups of Things | 0 | - | 4.46 | 38,317 |
| Germany True or False? | 0 | - | 4.61 | 48,554 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,518 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,882 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,659 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,871 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,078 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,378 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,053 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,424 |
| Champions League Winners | 0 | - | 4.92 | 997,307 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,415 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,297 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,362 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,907 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,257 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,311 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,823 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,570 |
| Word Chain - Italy | 0 | - | 4.07 | 23,097 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,048 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,728 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,734 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,096 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,227 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,270 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,552 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,682 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,186 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,754 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,423 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,334 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,326 |
| Word Chain - France | 0 | - | 4.38 | 42,598 |
| Germany Country Quiz | 0 | - | 4.82 | 156,694 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,254 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,799 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,784 |
| Italy Country Quiz | 0 | - | 4.82 | 122,326 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,516 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,185 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,010 |
| History of The Netherlands | 0 | - | 4.46 | 17,326 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,150 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,733 |
| Canary Islands | 0 | - | 4.61 | 17,411 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,053 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,200 |
| British Spellings | 0 | - | 4.07 | 99,270 |
| British Groups of Things | 0 | - | 4.25 | 82,707 |
| British Acronyms | 0 | - | 4.39 | 45,639 |
| UK Immigration by Country | 0 | - | 4.94 | 139,775 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,961 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,351 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,440 |
| Geography of Scotland | 0 | - | 4.63 | 21,496 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,648 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,510 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,462 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,608 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,042 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,221 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,882 |
| Slavic Languages | 0 | - | 4.67 | 54,024 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,706 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,541 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,434 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,559 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,969 |
| France A-Z | 0 | - | 4.16 | 38,071 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,650 |
| French History Multiple Choice | 0 | - | 4.55 | 32,892 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,517 |
| History of Germany | 0 | - | 4.39 | 52,639 |
| The Trojan War | 0 | - | 4.83 | 39,466 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,692 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,563 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,703 |
| Roman Names for Places | 0 | - | 4.62 | 57,913 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,268 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,481 |
| Languages of Spain | 0 | - | 4.36 | 23,162 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,588 |
| Switzerland A-Z | 0 | - | 4.45 | 25,519 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,465 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,929 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,474 |
| Malta Country Quiz | 0 | - | 4.81 | 30,860 |
| History of Russia Quiz | 0 | - | 4.49 | 31,801 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,588 |
| Famous French People | 0 | - | 4.12 | 27,987 |
| Movies Set in France | 0 | - | 4.26 | 13,081 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,619 |
| Word Chain - Germany | 0 | - | 4.31 | 22,484 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,793 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,458 |
| Italian Inventions | 0 | - | 3.81 | 18,415 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,496 |
| Famous Nordic People | 0 | - | 4.34 | 19,881 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,548 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,996 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,244 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,478 |
| People on Money - England | 0 | - | 4.29 | 16,570 |
| Name a Valid English City | 0 | - | 4.19 | 16,638 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,364 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,675 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,460 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,957 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,908 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,762 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,271 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,998 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,719 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,674 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,055 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,365 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,075 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,017 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,648 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,972 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,011 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,636 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,417 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,192 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,650 |
| Capitals of French Regions | 0 | - | 4.45 | 15,992 |
| Kings of France Quiz | 0 | - | 4.20 | 32,574 |
| Capitals of German States | 0 | - | 4.74 | 28,819 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,112 |
| Ancient Greek Words | 0 | - | 4.92 | 110,785 |
| Serie A Champions | 0 | - | 4.29 | 57,771 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,973 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| British to American Food Translation | 0 | - | 3.38 | 51,864 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,289 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,407 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,278 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,436 |
| Famous Scottish People | 0 | - | 4.22 | 18,335 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,256 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,558 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,933 |
| Australian Capitals | 0 | - | 4.92 | 62,598 |
| European Physical Geography | 0 | - | 4.26 | 33,382 |
| Geography of Russia | 0 | - | 4.57 | 21,436 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,798 |
| History of Austria | 0 | - | 4.70 | 17,765 |
| Austria Country Quiz | 0 | - | 4.57 | 59,391 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,297 |
| France Country Quiz | 0 | - | 4.70 | 133,936 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,939 |
| Geography of the French Empire | 0 | - | 4.48 | 26,946 |
| The French Revolution | 0 | - | 4.46 | 23,799 |
| France Multiple Choice | 0 | - | 4.38 | 40,645 |
| Tour de France Winners | 0 | - | 4.27 | 15,236 |
| History of France | 0 | - | 4.59 | 56,179 |
