| Netherlands Immigration by Country | 0 | - | 4.93 | 52,513 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Germany True or False? | 0 | - | 4.61 | 48,919 |
| Italy True or False? | 0 | - | 4.42 | 47,506 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,715 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,937 |
| Australia True or False | 0 | - | 4.87 | 56,995 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,520 |
| Sweden True or False? | 0 | - | 4.53 | 40,416 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,977 |
| States of Germany | 0 | - | 4.95 | 153,545 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,360 |
| Regions of Italy | 0 | - | 4.92 | 76,415 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,645 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,487 |
| Departments of France | 0 | - | 4.93 | 54,606 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,637 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,400 |
| Official European Union Languages | 0 | - | 4.97 | 239,081 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,236 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,507 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,151 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,939 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,794 |
| French History Multiple Choice | 0 | - | 4.55 | 33,146 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,056 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,445 |
| Celtic Nations | 0 | - | 4.69 | 47,011 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,714 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,697 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,837 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| Regions of France | 0 | - | 4.70 | 121,413 |
| France Immigration by Country | 0 | - | 4.70 | 76,717 |
| Famous Germans | 0 | - | 4.50 | 55,568 |
| German Groups of Things | 0 | - | 4.46 | 38,551 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,195 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,904 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| Counties of England | 0 | - | 4.97 | 799,797 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,509 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,783 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,762 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,216 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,471 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,475 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,454 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,272 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,969 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,323 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,460 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,237 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,349 |
| Champions League Winners | 0 | - | 4.92 | 1,010,866 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| France Multiple Choice | 0 | - | 4.39 | 40,783 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,205 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,392 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,516 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,684 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,956 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,815 |
| Famous French People | 0 | - | 4.07 | 35,916 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,289 |
| Word Chain - France | 0 | - | 4.38 | 42,866 |
| Germany Country Quiz | 0 | - | 4.83 | 158,315 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,734 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,801 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,700 |
| Italian Foods | 0 | - | 4.30 | 73,008 |
| The Mafia Quiz | 0 | - | 4.46 | 23,392 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,177 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,345 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,377 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,527 |
| British Groups of Things | 0 | - | 4.25 | 82,931 |
| British Acronyms | 0 | - | 4.40 | 45,870 |
| UK Immigration by Country | 0 | - | 4.94 | 141,245 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,064 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,342 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,152 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,993 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,219 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,668 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,954 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,832 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,691 |
| Slavic Languages | 0 | - | 4.68 | 54,514 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,906 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,650 |
| France A-Z | 0 | - | 4.16 | 38,283 |
| History of Germany | 0 | - | 4.39 | 52,913 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,604 |
| Name that Greek Letter | 0 | - | 4.93 | 324,332 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,682 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,370 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,531 |
| Most Common First Names in Spain | 0 | - | 4.27 | 46,255 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,139 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,583 |
| Switzerland A-Z | 0 | - | 4.45 | 25,700 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,804 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,056 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,900 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,484 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,447 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,430 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,639 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,269 |
| The Trojan War | 0 | - | 4.83 | 39,845 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,400 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,719 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Word Chain - Italy | 0 | - | 4.07 | 23,198 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,995 |
| Roman Emperors | 0 | - | 4.95 | 120,536 |
| Famous Nordic People | 0 | - | 4.34 | 20,198 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,549 |
| People on Money - England | 0 | - | 4.29 | 16,627 |
| Name a Valid English City | 0 | - | 4.19 | 16,765 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,127 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,930 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,758 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,753 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,098 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,499 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,883 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,437 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,107 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,484 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,284 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,099 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,351 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,938 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,425 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,390 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,045 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,344 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,319 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,964 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,581 |
| Capitals of French Regions | 0 | - | 4.45 | 16,123 |
| Kings of France Quiz | 0 | - | 4.20 | 32,845 |
| Capitals of German States | 0 | - | 4.74 | 29,004 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,418 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,248 |
| Ancient Greek Words | 0 | - | 4.93 | 112,039 |
| British to American Food Translation | 0 | - | 3.38 | 51,993 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,329 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,186 |
| Famous Scottish People | 0 | - | 4.22 | 18,418 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,785 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| European Physical Geography | 0 | - | 4.26 | 33,551 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,038 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Austria Country Quiz | 0 | - | 4.57 | 59,886 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,995 |
| France Country Quiz | 0 | - | 4.70 | 135,289 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,261 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,079 |
| Tour de France Winners | 0 | - | 4.27 | 15,438 |
| History of France | 0 | - | 4.61 | 57,346 |
| Greece Country Quiz | 0 | - | 4.74 | 66,425 |
| Italy Country Quiz | 0 | - | 4.77 | 123,706 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,366 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,323 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,848 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,591 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,702 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,585 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,087 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Spain Country Quiz | 0 | - | 4.44 | 128,885 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,491 |
