| Regions of Spain Quiz | 0 | - | 4.91 | 115,687 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,272 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,632 |
| States of Germany | 0 | - | 4.95 | 155,062 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,862 |
| Regions of Italy | 0 | - | 4.92 | 77,324 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,972 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,963 |
| Departments of France | 0 | - | 4.93 | 55,483 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,796 |
| England or Wales? | 0 | - | 4.94 | 46,095 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,888 |
| Official European Union Languages | 0 | - | 4.97 | 240,472 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,892 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,577 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,381 |
| Name that Greek Letter | 0 | - | 4.93 | 325,408 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,671 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,415 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,121 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,059 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,483 |
| Celtic Nations | 0 | - | 4.61 | 47,131 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,453 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,175 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,350 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,785 |
| Regions of France | 0 | - | 4.70 | 122,517 |
| France Immigration by Country | 0 | - | 4.70 | 77,043 |
| Famous Germans | 0 | - | 4.50 | 55,901 |
| German Groups of Things | 0 | - | 4.47 | 38,684 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,775 |
| Germany True or False? | 0 | - | 4.61 | 49,092 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,534 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,620 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,588 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,980 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,412 |
| Languages of Spain | 0 | - | 4.36 | 23,475 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,519 |
| Counties of England | 0 | - | 4.97 | 804,768 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,999 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,863 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,076 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,287 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,591 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,298 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,273 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,937 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,333 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,239 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,044 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,874 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,061 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,652 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,971 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,698 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,369 |
| Champions League Winners | 0 | - | 4.92 | 1,018,680 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,845 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,454 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,101 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,504 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,859 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,506 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,473 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,404 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,024 |
| Famous French People | 0 | - | 4.05 | 36,201 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,104 |
| Word Chain - France | 0 | - | 4.38 | 42,976 |
| Germany Country Quiz | 0 | - | 4.82 | 159,162 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,314 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,303 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,504 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,298 |
| Italian Foods | 0 | - | 4.30 | 73,430 |
| The Mafia Quiz | 0 | - | 4.46 | 23,455 |
| History of The Netherlands | 0 | - | 4.46 | 17,581 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,139 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,661 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,096 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,187 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,192 |
| British Spellings | 0 | - | 4.06 | 99,642 |
| British Groups of Things | 0 | - | 4.26 | 83,050 |
| British Acronyms | 0 | - | 4.40 | 45,995 |
| UK Immigration by Country | 0 | - | 4.94 | 141,954 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,136 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,382 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,135 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,841 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,614 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,973 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,814 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,743 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,490 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,677 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,093 |
| Slavic Languages | 0 | - | 4.67 | 54,806 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,473 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,322 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,690 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,170 |
| France A-Z | 0 | - | 4.16 | 38,371 |
| French History Multiple Choice | 0 | - | 4.55 | 33,285 |
| History of Germany | 0 | - | 4.39 | 53,011 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| History of Spain | 0 | - | 4.23 | 21,179 |
| Switzerland A-Z | 0 | - | 4.45 | 25,803 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,050 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,117 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,174 |
| Malta Country Quiz | 0 | - | 4.81 | 31,277 |
| History of Russia Quiz | 0 | - | 4.47 | 32,032 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,913 |
| Movies Set in France | 0 | - | 4.26 | 13,165 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,849 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Word Chain - Germany | 0 | - | 4.31 | 22,704 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,696 |
| The Trojan War | 0 | - | 4.83 | 40,124 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,362 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,122 |
| History of Italy | 0 | - | 4.55 | 32,199 |
| Word Chain - Italy | 0 | - | 4.07 | 23,236 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,572 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,187 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,732 |
| Roman Emperors | 0 | - | 4.95 | 121,525 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Famous Nordic People | 0 | - | 4.34 | 20,362 |
| Geography of Spain | 0 | - | 4.59 | 22,302 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,428 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,586 |
| People on Money - England | 0 | - | 4.30 | 21,279 |
| Name a Valid English City | 0 | - | 4.19 | 16,849 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,143 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,762 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,552 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,999 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,550 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,114 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,493 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,023 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,428 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,003 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,279 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,917 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,363 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,593 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,264 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,534 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,491 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,662 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 66,060 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,642 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,803 |
| Capitals of French Regions | 0 | - | 4.45 | 16,217 |
| Kings of France Quiz | 0 | - | 4.22 | 32,978 |
| Capitals of German States | 0 | - | 4.74 | 29,102 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,602 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,738 |
| Ancient Greek Words | 0 | - | 4.93 | 112,740 |
| British to American Food Translation | 0 | - | 3.38 | 52,067 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,616 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,952 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,058 |
| Famous Scottish People | 0 | - | 4.22 | 18,445 |
| Song Title Translation - Spanish | 0 | - | 4.57 | 35,921 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,842 |
| Australian Capitals | 0 | - | 4.92 | 62,886 |
| European Physical Geography | 0 | - | 4.26 | 33,623 |
| Geography of Russia | 0 | - | 4.57 | 21,628 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,181 |
| History of Austria | 0 | - | 4.70 | 17,993 |
| Austria Country Quiz | 0 | - | 4.57 | 60,148 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,414 |
| France Country Quiz | 0 | - | 4.70 | 135,863 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,421 |
| Geography of the French Empire | 0 | - | 4.45 | 27,242 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| Tour de France Winners | 0 | - | 4.27 | 15,551 |
| History of France | 0 | - | 4.61 | 57,767 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Greece Country Quiz | 0 | - | 4.74 | 66,750 |
| Italy Country Quiz | 0 | - | 4.77 | 124,277 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,682 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,661 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 34,008 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,740 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,086 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,829 |
