| States of Germany | 0 | - | 4.96 | 150,546 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,175 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,495 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,857 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,112 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,631 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,218 |
| Regions of Italy | 0 | - | 4.92 | 74,938 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,964 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,626 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,566 |
| Departments of France | 0 | - | 4.93 | 53,031 |
| Famous Germans | 0 | - | 4.50 | 54,719 |
| German Groups of Things | 0 | - | 4.46 | 38,343 |
| Germany True or False? | 0 | - | 4.61 | 48,586 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,402 |
| England or Wales? | 0 | - | 4.94 | 45,404 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,721 |
| Official European Union Languages | 0 | - | 4.97 | 237,234 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,078 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,809 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,612 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,588 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,257 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,616 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,262 |
| Celtic Nations | 0 | - | 4.69 | 46,839 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,960 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,340 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,688 |
| Regions of France | 0 | - | 4.78 | 119,566 |
| France Immigration by Country | 0 | - | 4.72 | 76,055 |
| Capitals of German States | 0 | - | 4.74 | 28,861 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,146 |
| History of Germany | 0 | - | 4.39 | 52,667 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,593 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,695 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,927 |
| Switzerland A-Z | 0 | - | 4.45 | 25,538 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,099 |
| Counties of England | 0 | - | 4.97 | 790,602 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,121 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,447 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,081 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,502 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,377 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,498 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,024 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,592 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,462 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,954 |
| Word Chain - Germany | 0 | - | 4.31 | 22,497 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,713 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,170 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,360 |
| Champions League Winners | 0 | - | 4.92 | 998,225 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,219 |
| Austria Country Quiz | 0 | - | 4.57 | 59,436 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,404 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,756 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,332 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,578 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,005 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,625 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,535 |
| Austria... or Australia? | 0 | - | 4.68 | 103,975 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,423 |
| Word Chain - France | 0 | - | 4.38 | 42,616 |
| Germany Country Quiz | 0 | - | 4.82 | 156,829 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,361 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,821 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,803 |
| Italy Country Quiz | 0 | - | 4.82 | 122,433 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,596 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,283 |
| Italian Foods | 0 | - | 4.31 | 72,307 |
| The Mafia Quiz | 0 | - | 4.46 | 23,222 |
| History of The Netherlands | 0 | - | 4.46 | 17,340 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,226 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,834 |
| Canary Islands | 0 | - | 4.61 | 17,420 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,172 |
| British Spellings | 0 | - | 4.07 | 99,299 |
| British Groups of Things | 0 | - | 4.25 | 82,727 |
| British Acronyms | 0 | - | 4.39 | 45,663 |
| UK Immigration by Country | 0 | - | 4.94 | 139,899 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,974 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,509 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,561 |
| Geography of Scotland | 0 | - | 4.63 | 21,510 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,805 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,482 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,613 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,107 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,413 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,965 |
| Slavic Languages | 0 | - | 4.68 | 54,064 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,565 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,462 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,903 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,979 |
| France A-Z | 0 | - | 4.16 | 38,089 |
| Geography of Germany | 0 | - | 4.35 | 17,111 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,167 |
| Name that Greek Letter | 0 | - | 4.94 | 322,036 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,470 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,284 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,498 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,499 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,944 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,500 |
| Malta Country Quiz | 0 | - | 4.81 | 30,877 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,804 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,331 |
| History of Russia Quiz | 0 | - | 4.49 | 31,812 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,605 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,916 |
| Famous French People | 0 | - | 4.12 | 28,056 |
| Movies Set in France | 0 | - | 4.26 | 13,089 |
| French Inventions | 0 | - | 4.08 | 13,868 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,707 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| The Trojan War | 0 | - | 4.83 | 39,486 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,838 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,656 |
| History of Italy | 0 | - | 4.55 | 31,859 |
| Word Chain - Italy | 0 | - | 4.07 | 23,109 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,306 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,151 |
| Roman Emperors | 0 | - | 4.95 | 118,760 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,518 |
| Famous Nordic People | 0 | - | 4.34 | 19,919 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,555 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,024 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,256 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,482 |
| People on Money - England | 0 | - | 4.29 | 16,576 |
| Name a Valid English City | 0 | - | 4.19 | 16,649 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,432 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,638 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,566 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,039 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,001 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,882 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,347 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,126 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,953 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,721 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,097 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,444 |
| Europe Map Quiz | 0 | - | 5.00 | 4,737,788 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,043 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,679 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,003 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,038 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,697 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,255 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,702 |
| Capitals of French Regions | 0 | - | 4.45 | 16,001 |
| Kings of France Quiz | 0 | - | 4.20 | 32,589 |
| German Loan Words | 0 | - | 4.27 | 135,517 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,300 |
| Ancient Greek Words | 0 | - | 4.92 | 110,889 |
| British to American Food Translation | 0 | - | 3.38 | 51,884 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,315 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,527 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,549 |
| Famous Scottish People | 0 | - | 4.22 | 18,341 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,860 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,682 |
| Australian Capitals | 0 | - | 4.92 | 62,612 |
| European Physical Geography | 0 | - | 4.26 | 33,395 |
| Geography of Russia | 0 | - | 4.57 | 21,450 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,813 |
| History of Austria | 0 | - | 4.70 | 17,776 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,356 |
| France Country Quiz | 0 | - | 4.70 | 134,026 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,971 |
| Geography of the French Empire | 0 | - | 4.45 | 26,963 |
| The French Revolution | 0 | - | 4.46 | 23,824 |
| France Multiple Choice | 0 | - | 4.38 | 40,655 |
| Tour de France Winners | 0 | - | 4.27 | 15,253 |
| History of France | 0 | - | 4.59 | 56,338 |
| Bundesliga Champions | 0 | - | 4.23 | 55,849 |
| All Bundesliga Teams Ever | 0 | - | 4.35 | 45,170 |
| German History A-Z | 0 | - | 4.49 | 24,465 |
| German Inventions | 0 | - | 3.91 | 30,192 |
| Embarrassing Chapters in German History | 0 | - | 3.41 | 12,585 |
| Greece Country Quiz | 0 | - | 4.74 | 65,857 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,335 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,710 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,541 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,296 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,085 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,839 |
| The Vikings! | 0 | - | 4.46 | 28,263 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,471 |
| The Portuguese Empire | 0 | - | 4.54 | 12,005 |
| Spain Country Quiz | 0 | - | 4.45 | 127,797 |
