| Regions of Spain Quiz | 0 | - | 4.90 | 115,054 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,809 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,971 |
| States of Germany | 0 | - | 4.95 | 154,058 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,555 |
| Regions of Italy | 0 | - | 4.92 | 76,744 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,665 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,626 |
| Departments of France | 0 | - | 4.93 | 54,886 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,707 |
| England or Wales? | 0 | - | 4.94 | 45,903 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,590 |
| Official European Union Languages | 0 | - | 4.97 | 239,472 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,479 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,279 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,827 |
| Name that Greek Letter | 0 | - | 4.93 | 324,715 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,233 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,005 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,656 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,388 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,475 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,293 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,899 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,238 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,064 |
| Regions of France | 0 | - | 4.70 | 121,790 |
| France Immigration by Country | 0 | - | 4.70 | 76,839 |
| Famous Germans | 0 | - | 4.50 | 55,691 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,629 |
| Germany True or False? | 0 | - | 4.61 | 48,970 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,346 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,357 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,233 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,645 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,872 |
| Languages of Spain | 0 | - | 4.36 | 23,400 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,383 |
| Counties of England | 0 | - | 4.97 | 801,432 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,663 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,254 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,908 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,967 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,997 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,578 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,632 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,311 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,733 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,987 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,385 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,574 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,633 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,977 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,393 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,698 |
| Champions League Winners | 0 | - | 4.92 | 1,013,570 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,698 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,318 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,027 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,280 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,811 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,608 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,198 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,501 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,481 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,879 |
| Famous French People | 0 | - | 4.07 | 36,015 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,539 |
| Word Chain - France | 0 | - | 4.38 | 42,901 |
| Germany Country Quiz | 0 | - | 4.82 | 158,600 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,925 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,178 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,037 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,888 |
| Italian Foods | 0 | - | 4.30 | 73,154 |
| The Mafia Quiz | 0 | - | 4.46 | 23,413 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,094 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,340 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,637 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,624 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,972 |
| British Spellings | 0 | - | 4.06 | 99,567 |
| British Groups of Things | 0 | - | 4.25 | 82,977 |
| British Acronyms | 0 | - | 4.40 | 45,904 |
| UK Immigration by Country | 0 | - | 4.94 | 141,496 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,087 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,700 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,488 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,059 |
| Geography of Scotland | 0 | - | 4.63 | 21,706 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,690 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,664 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,710 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,703 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,162 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,304 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,802 |
| Slavic Languages | 0 | - | 4.67 | 54,623 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,348 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,658 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,117 |
| France A-Z | 0 | - | 4.16 | 38,313 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,709 |
| History of Spain | 0 | - | 4.23 | 21,147 |
| Switzerland A-Z | 0 | - | 4.45 | 25,744 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,913 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,014 |
| Malta Country Quiz | 0 | - | 4.81 | 31,205 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,589 |
| History of Paris | 0 | - | 4.24 | 13,669 |
| Word Chain - Germany | 0 | - | 4.31 | 22,660 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,450 |
| The Trojan War | 0 | - | 4.83 | 39,937 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,704 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,182 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,220 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,150 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,498 |
| Roman Emperors | 0 | - | 4.95 | 120,927 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Famous Nordic People | 0 | - | 4.34 | 20,243 |
| Geography of Spain | 0 | - | 4.59 | 22,155 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,389 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,567 |
| People on Money - England | 0 | - | 4.29 | 16,636 |
| Name a Valid English City | 0 | - | 4.19 | 16,798 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,335 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,063 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,691 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,072 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,035 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,079 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,738 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,081 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,864 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,380 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,594 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,291 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,360 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,458 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,111 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,409 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,370 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,211 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,920 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,436 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,659 |
| Capitals of French Regions | 0 | - | 4.45 | 16,156 |
| Kings of France Quiz | 0 | - | 4.20 | 32,882 |
| Capitals of German States | 0 | - | 4.74 | 29,041 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,504 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,076 |
| Ancient Greek Words | 0 | - | 4.93 | 112,276 |
| British to American Food Translation | 0 | - | 3.38 | 52,018 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,541 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,923 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,587 |
| Famous Scottish People | 0 | - | 4.22 | 18,428 |
| Song Title Translation - Spanish | 0 | - | 4.57 | 35,883 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,073 |
| Australian Capitals | 0 | - | 4.92 | 62,807 |
| European Physical Geography | 0 | - | 4.26 | 33,574 |
| Geography of Russia | 0 | - | 4.57 | 21,577 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,081 |
| History of Austria | 0 | - | 4.70 | 17,956 |
| Austria Country Quiz | 0 | - | 4.57 | 59,979 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,143 |
| France Country Quiz | 0 | - | 4.70 | 135,460 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,315 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,117 |
| France Multiple Choice | 0 | - | 4.39 | 40,814 |
| Tour de France Winners | 0 | - | 4.27 | 15,474 |
| History of France | 0 | - | 4.61 | 57,483 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Greece Country Quiz | 0 | - | 4.74 | 66,544 |
| Italy Country Quiz | 0 | - | 4.77 | 123,903 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,144 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,418 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,903 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,646 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,835 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,661 |
| The Vikings! | 0 | - | 4.46 | 28,394 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,210 |
