| European Countries by First 2 Letters | 0 | - | 4.95 | 530,664 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,481 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,204 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,650 |
| States of Germany | 0 | - | 4.95 | 153,246 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,300 |
| Regions of Italy | 0 | - | 4.92 | 76,269 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,443 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,436 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,425 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,341 |
| Official European Union Languages | 0 | - | 4.97 | 238,951 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,151 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,116 |
| The Vikings! | 0 | - | 4.46 | 28,369 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,118 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,917 |
| History of Italy | 0 | - | 4.55 | 32,058 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,972 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,300 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,432 |
| Celtic Nations | 0 | - | 4.69 | 46,997 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,543 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,349 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,165 |
| Counties of England | 0 | - | 4.97 | 799,033 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,279 |
| Regions of France | 0 | - | 4.72 | 121,269 |
| France Immigration by Country | 0 | - | 4.70 | 76,689 |
| Famous Germans | 0 | - | 4.50 | 55,538 |
| German Groups of Things | 0 | - | 4.46 | 38,529 |
| Germany True or False? | 0 | - | 4.61 | 48,894 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,148 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,822 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,503 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,343 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,448 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,949 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,402 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,890 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,336 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,056 |
| History of Austria | 0 | - | 4.70 | 17,908 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,876 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.59 | 57,286 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,233 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,217 |
| The Portuguese Empire | 0 | - | 4.58 | 12,083 |
| American to British Word Translation | 0 | - | 4.14 | 139,327 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,951 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,170 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,203 |
| Champions League Winners | 0 | - | 4.92 | 1,010,043 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,958 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,403 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,665 |
| Departments of France | 0 | - | 4.93 | 54,491 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,619 |
| England or Wales? | 0 | - | 4.94 | 45,806 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,034 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,647 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,893 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,656 |
| Slavic Languages | 0 | - | 4.68 | 54,472 |
| Famous French People | 0 | - | 4.07 | 35,864 |
| Word Chain - France | 0 | - | 4.38 | 42,847 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,666 |
| Italian Foods | 0 | - | 4.30 | 72,950 |
| The Mafia Quiz | 0 | - | 4.46 | 23,373 |
| History of The Netherlands | 0 | - | 4.46 | 17,488 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Canary Islands | 0 | - | 4.62 | 17,493 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,836 |
| British Spellings | 0 | - | 4.06 | 99,510 |
| British Groups of Things | 0 | - | 4.25 | 82,915 |
| British Acronyms | 0 | - | 4.40 | 45,855 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,058 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,957 |
| Geography of Scotland | 0 | - | 4.63 | 21,660 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,653 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,861 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,509 |
| Geography of Germany | 0 | - | 4.35 | 17,209 |
| History of Germany | 0 | - | 4.39 | 52,904 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,985 |
| Name that Greek Letter | 0 | - | 4.93 | 324,199 |
| History of Spain | 0 | - | 4.23 | 21,119 |
| Languages of Spain | 0 | - | 4.36 | 23,353 |
| British to American Word Translation | 0 | - | 3.74 | 255,176 |
| British Foods by Description | 0 | - | 3.94 | 48,343 |
| British and American Word Differences | 0 | - | 2.63 | 46,898 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,722 |
| Bridges of London | 0 | - | 4.17 | 10,120 |
| British Sport Trivia | 0 | - | 4.37 | 20,487 |
| Famous Welsh People | 0 | - | 4.31 | 11,571 |
| Malta Country Quiz | 0 | - | 4.81 | 31,117 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,367 |
| History of Russia Quiz | 0 | - | 4.47 | 31,956 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,782 |
| Movies Set in France | 0 | - | 4.26 | 13,134 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Word Chain - Germany | 0 | - | 4.31 | 22,622 |
| The Trojan War | 0 | - | 4.83 | 39,803 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,270 |
| Word Chain - Italy | 0 | - | 4.07 | 23,184 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,127 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,659 |
| Roman Emperors | 0 | - | 4.95 | 120,421 |
| Famous Nordic People | 0 | - | 4.34 | 20,175 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,802 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,959 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,362 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,546 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| Name a Valid English City | 0 | - | 4.19 | 16,754 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,722 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,618 |
| Australian Capitals | 0 | - | 4.92 | 62,757 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,994 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,393 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,789 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,344 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,012 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,342 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,215 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,022 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,293 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,847 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,846 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,361 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,016 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,306 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,299 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,895 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,555 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,403 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,958 |
| Ancient Greek Words | 0 | - | 4.93 | 111,926 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,092 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,120 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,706 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Geography of Russia | 0 | - | 4.57 | 21,555 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,023 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,099 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,282 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,165 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,379 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,725 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,682 |
| Geography of the British Empire | 0 | - | 4.48 | 39,735 |
| Champions League Top 4 | 0 | - | 4.77 | 137,339 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,791 |
| Asia Map Quiz | 0 | - | 4.99 | 919,871 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,057 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,956 |
| Australia Map Quiz | 0 | - | 4.95 | 345,229 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,802 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,842 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,744 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,619 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,090 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,274 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,623 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,475 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,158 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,902 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,542 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,021 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,153 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,752 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,451 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,719 |
| European Geography A-Z | 0 | - | 4.29 | 49,368 |
| Country Codes of Europe | 0 | - | 3.43 | 13,754 |
| The Only European Country ... | 0 | - | 4.91 | 217,445 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,612 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,305 |
| Austria... or Australia? | 0 | - | 4.68 | 104,510 |
| Presidents of France | 0 | - | 4.25 | 24,217 |
| French Foods | 0 | - | 4.00 | 27,726 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,081 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,754 |
| Italian Inventions | 0 | - | 3.81 | 18,462 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,427 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,068 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,397 |
