| Regions of Italy | 0 | - | 4.92 | 74,825 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,386 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,614 |
| States of Germany | 0 | - | 4.96 | 150,275 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,101 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,893 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,474 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,292 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,808 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,604 |
| Departments of France | 0 | - | 4.93 | 52,927 |
| England or Wales? | 0 | - | 4.94 | 45,363 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,637 |
| Official European Union Languages | 0 | - | 4.97 | 237,058 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,775 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,502 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,487 |
| Name that Greek Letter | 0 | - | 4.94 | 321,824 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,443 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,108 |
| Roman Emperors | 0 | - | 4.95 | 118,605 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,570 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,220 |
| Italian Foods | 0 | - | 4.31 | 72,244 |
| History of Italy | 0 | - | 4.55 | 31,839 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,222 |
| 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 | 72,584 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,543 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,912 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,029 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,184 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,066 |
| Counties of England | 0 | - | 4.97 | 789,866 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,464 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,758 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,251 |
| Celtic Nations | 0 | - | 4.69 | 46,826 |
| Regions of France | 0 | - | 4.78 | 119,388 |
| 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 | 48,552 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,518 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,875 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,657 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,871 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,077 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,375 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,048 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,424 |
| Champions League Winners | 0 | - | 4.92 | 997,290 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,412 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,296 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,354 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,906 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,256 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,309 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,822 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,569 |
| 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 | 55,727 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,733 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,094 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,223 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,270 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,551 |
| 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 | 230,746 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,419 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,329 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,326 |
| Word Chain - France | 0 | - | 4.38 | 42,597 |
| Germany Country Quiz | 0 | - | 4.82 | 156,691 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,253 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,799 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,783 |
| Italy Country Quiz | 0 | - | 4.82 | 122,322 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,515 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,182 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,009 |
| 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 | 184,732 |
| Canary Islands | 0 | - | 4.61 | 17,411 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,045 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,200 |
| British Spellings | 0 | - | 4.07 | 99,269 |
| British Groups of Things | 0 | - | 4.25 | 82,707 |
| British Acronyms | 0 | - | 4.39 | 45,638 |
| UK Immigration by Country | 0 | - | 4.94 | 139,773 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,959 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,348 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,437 |
| Geography of Scotland | 0 | - | 4.63 | 21,496 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,646 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,509 |
| 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 | 141,038 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,219 |
| 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 | 98,703 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,541 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,433 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,559 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,968 |
| 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 | 32,891 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,517 |
| History of Germany | 0 | - | 4.39 | 52,638 |
| The Trojan War | 0 | - | 4.83 | 39,464 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,687 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,561 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,703 |
| Roman Names for Places | 0 | - | 4.62 | 57,911 |
| 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 | 85,586 |
| Switzerland A-Z | 0 | - | 4.45 | 25,518 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,465 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,928 |
| 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 | 13,080 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,619 |
| Word Chain - Germany | 0 | - | 4.31 | 22,483 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,777 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,454 |
| Italian Inventions | 0 | - | 3.81 | 18,412 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,494 |
| Famous Nordic People | 0 | - | 4.34 | 19,879 |
| 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 | 21,477 |
| 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 | 266,672 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,457 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,957 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,906 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,760 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,271 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,996 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,719 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,672 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,053 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,363 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,018 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,015 |
| 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 | 99,634 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,417 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,190 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,648 |
| Capitals of French Regions | 0 | - | 4.45 | 15,991 |
| Kings of France Quiz | 0 | - | 4.20 | 32,573 |
| Capitals of German States | 0 | - | 4.74 | 28,818 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,111 |
| Ancient Greek Words | 0 | - | 4.92 | 110,784 |
| Serie A Champions | 0 | - | 4.29 | 57,768 |
| 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 | 234,274 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,434 |
| Famous Scottish People | 0 | - | 4.22 | 18,335 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,252 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,535 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,908 |
| 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 | 59,390 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,297 |
| France Country Quiz | 0 | - | 4.70 | 133,935 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,938 |
| 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 | 56,174 |
