| England or Wales? | 0 | - | 4.94 | 45,358 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,556 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,060 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,097 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,767 |
| States of Germany | 0 | - | 4.96 | 150,240 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,087 |
| Regions of Italy | 0 | - | 4.92 | 74,812 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,883 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,450 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,286 |
| Departments of France | 0 | - | 4.93 | 52,908 |
| Germany True or False? | 0 | - | 4.61 | 48,551 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,384 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,420 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,627 |
| Official European Union Languages | 0 | - | 4.97 | 237,038 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,758 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,475 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,724 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,567 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,583 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,587 |
| French History Multiple Choice | 0 | - | 4.55 | 32,888 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,217 |
| Australia True or False | 0 | - | 4.87 | 56,533 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,250 |
| Celtic Nations | 0 | - | 4.69 | 46,824 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,908 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,009 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,121 |
| Regions of France | 0 | - | 4.78 | 119,362 |
| France Immigration by Country | 0 | - | 4.72 | 76,001 |
| Famous Germans | 0 | - | 4.50 | 54,654 |
| German Groups of Things | 0 | - | 4.46 | 38,315 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,506 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,589 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,858 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,073 |
| Counties of England | 0 | - | 4.97 | 789,774 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,036 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,375 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,388 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,284 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,339 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,887 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,195 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,289 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,805 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,344 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,085 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,205 |
| Champions League Winners | 0 | - | 4.92 | 997,145 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,179 |
| France Multiple Choice | 0 | - | 4.38 | 40,643 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,565 |
| The Vikings! | 0 | - | 4.46 | 28,251 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,259 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,202 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,545 |
| North Korea... or South Korea? | 0 | - | 4.47 | 80,330 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,720 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,390 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,308 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,311 |
| Word Chain - France | 0 | - | 4.38 | 42,591 |
| Germany Country Quiz | 0 | - | 4.82 | 156,674 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,234 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,795 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,779 |
| Italy Country Quiz | 0 | - | 4.82 | 122,312 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,499 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,161 |
| Italian Foods | 0 | - | 4.31 | 72,235 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| History of The Netherlands | 0 | - | 4.46 | 17,324 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,139 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,723 |
| Canary Islands | 0 | - | 4.61 | 17,411 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,024 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,196 |
| British Spellings | 0 | - | 4.07 | 99,262 |
| British Groups of Things | 0 | - | 4.25 | 82,704 |
| British Acronyms | 0 | - | 4.39 | 45,635 |
| UK Immigration by Country | 0 | - | 4.94 | 139,756 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,955 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,326 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,404 |
| Geography of Scotland | 0 | - | 4.63 | 21,494 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,618 |
| Bhutan... or Nepal? | 0 | - | 4.59 | 17,659 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,458 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,607 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,035 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,196 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,876 |
| Slavic Languages | 0 | - | 4.67 | 54,014 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,533 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,424 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,558 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,966 |
| France A-Z | 0 | - | 4.16 | 38,068 |
| History of Germany | 0 | - | 4.39 | 52,632 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,369 |
| Name that Greek Letter | 0 | - | 4.94 | 321,798 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,443 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,423 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,264 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,479 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,170 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,569 |
| Switzerland A-Z | 0 | - | 4.45 | 25,517 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,460 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,926 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,469 |
| Malta Country Quiz | 0 | - | 4.81 | 30,851 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,649 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 48,931 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,205 |
| History of Russia Quiz | 0 | - | 4.49 | 31,801 |
| Famous French People | 0 | - | 4.12 | 27,981 |
| Movies Set in France | 0 | - | 4.26 | 13,077 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,641 |
| History of Paris | 0 | - | 4.24 | 13,619 |
| Word Chain - Germany | 0 | - | 4.31 | 22,482 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,509 |
| The Trojan War | 0 | - | 4.83 | 39,460 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,657 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,436 |
| History of Italy | 0 | - | 4.55 | 31,835 |
| Word Chain - Italy | 0 | - | 4.07 | 23,096 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,048 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,096 |
| Roman Emperors | 0 | - | 4.95 | 118,581 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,492 |
| Famous Nordic People | 0 | - | 4.34 | 19,878 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,696 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,548 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,993 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,244 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,475 |
| People on Money - England | 0 | - | 4.29 | 16,570 |
| Name a Valid English City | 0 | - | 4.19 | 16,633 |
| UK General Knowledge Multiple Choice #3 | 0 | - | 4.53 | 18,040 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,353 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,223 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,543 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,448 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,947 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,898 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,754 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,266 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,976 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,711 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,665 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,050 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,355 |
| Europe Map Quiz | 0 | - | 5.00 | 4,733,556 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,013 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,645 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,967 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,008 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,631 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,185 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,643 |
| Capitals of French Regions | 0 | - | 4.45 | 15,989 |
| Kings of France Quiz | 0 | - | 4.20 | 32,570 |
| Capitals of German States | 0 | - | 4.74 | 28,818 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,111 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,687 |
| Ancient Greek Words | 0 | - | 4.92 | 110,765 |
| British to American Food Translation | 0 | - | 3.38 | 51,857 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,282 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,249 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,419 |
| Famous Scottish People | 0 | - | 4.22 | 18,334 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,319 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,824 |
| Australian Capitals | 0 | - | 4.92 | 62,597 |
| European Physical Geography | 0 | - | 4.26 | 33,381 |
| Geography of Russia | 0 | - | 4.57 | 21,434 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,797 |
| History of Austria | 0 | - | 4.70 | 17,764 |
| Austria Country Quiz | 0 | - | 4.57 | 59,382 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,290 |
| France Country Quiz | 0 | - | 4.70 | 133,923 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,930 |
| Geography of the French Empire | 0 | - | 4.48 | 26,944 |
| The French Revolution | 0 | - | 4.46 | 23,794 |
| Tour de France Winners | 0 | - | 4.27 | 15,232 |
| History of France | 0 | - | 4.59 | 56,156 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,390 |
| Greece Country Quiz | 0 | - | 4.74 | 65,796 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,803 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,653 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,505 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,267 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,017 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,795 |
