| Regions of Italy | 0 | - | 4.92 | 74,942 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,888 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,115 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,635 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,259 |
| History of Italy | 0 | - | 4.55 | 31,860 |
| States of Germany | 0 | - | 4.96 | 150,559 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,181 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,970 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,631 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,502 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,579 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,724 |
| Official European Union Languages | 0 | - | 4.97 | 237,247 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,085 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,404 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,831 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,616 |
| Italian Foods | 0 | - | 4.31 | 72,309 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,616 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,310 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,156 |
| Roman Emperors | 0 | - | 4.95 | 118,768 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,520 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,027 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,263 |
| Celtic Nations | 0 | - | 4.69 | 46,839 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,965 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,402 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,710 |
| Counties of England | 0 | - | 4.97 | 790,677 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,130 |
| Regions of France | 0 | - | 4.78 | 119,584 |
| France Immigration by Country | 0 | - | 4.72 | 76,058 |
| Famous Germans | 0 | - | 4.50 | 54,721 |
| German Groups of Things | 0 | - | 4.46 | 38,343 |
| Germany True or False? | 0 | - | 4.61 | 48,591 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,593 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,336 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,701 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,935 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,099 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,126 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,549 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,558 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,509 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,383 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,220 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,501 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,030 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,604 |
| History of Austria | 0 | - | 4.70 | 17,777 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,466 |
| Geography of the French Empire | 0 | - | 4.45 | 26,963 |
| The French Revolution | 0 | - | 4.46 | 23,826 |
| France Multiple Choice | 0 | - | 4.38 | 40,657 |
| History of France | 0 | - | 4.59 | 56,344 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,958 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,405 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,715 |
| The Vikings! | 0 | - | 4.46 | 28,264 |
| The Portuguese Empire | 0 | - | 4.54 | 12,006 |
| American to British Word Translation | 0 | - | 4.13 | 137,105 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,768 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,176 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,369 |
| Champions League Winners | 0 | - | 4.92 | 998,298 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,033 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,636 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,549 |
| Departments of France | 0 | - | 4.93 | 53,033 |
| Italy Country Quiz | 0 | - | 4.82 | 122,438 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,596 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,381 |
| England or Wales? | 0 | - | 4.94 | 45,404 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,816 |
| 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 | 141,114 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,426 |
| Slavic Languages | 0 | - | 4.68 | 54,065 |
| Word Chain - France | 0 | - | 4.38 | 42,618 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,388 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,470 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,053 |
| The Mafia Quiz | 0 | - | 4.46 | 23,222 |
| History of The Netherlands | 0 | - | 4.46 | 17,342 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,285 |
| Canary Islands | 0 | - | 4.61 | 17,420 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,262 |
| British Spellings | 0 | - | 4.07 | 99,302 |
| British Groups of Things | 0 | - | 4.25 | 82,728 |
| British Acronyms | 0 | - | 4.39 | 45,665 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,975 |
| Geography of Scotland | 0 | - | 4.63 | 21,511 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,971 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,568 |
| Geography of Germany | 0 | - | 4.35 | 17,111 |
| History of Germany | 0 | - | 4.39 | 52,668 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,213 |
| Name that Greek Letter | 0 | - | 4.94 | 322,050 |
| Italian Inventions | 0 | - | 3.81 | 18,416 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,555 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,611 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,581 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,736 |
| Roman Names for Places | 0 | - | 4.62 | 57,955 |
| Byzantine History | 0 | - | 4.91 | 28,662 |
| History of Spain | 0 | - | 4.29 | 21,021 |
| Languages of Spain | 0 | - | 4.36 | 23,186 |
| British to American Word Translation | 0 | - | 3.75 | 254,786 |
| British Foods by Description | 0 | - | 3.94 | 48,274 |
| British and American Word Differences | 0 | - | 2.64 | 46,788 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,530 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,505 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,721 |
| Bridges of London | 0 | - | 4.17 | 10,066 |
| British Sport Trivia | 0 | - | 4.37 | 20,385 |
| Famous Welsh People | 0 | - | 4.21 | 9,784 |
| Malta Country Quiz | 0 | - | 4.81 | 30,878 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,812 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,338 |
| History of Russia Quiz | 0 | - | 4.49 | 31,813 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,606 |
| Famous French People | 0 | - | 4.12 | 28,061 |
| Movies Set in France | 0 | - | 4.26 | 13,089 |
| French Inventions | 0 | - | 4.08 | 13,869 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Word Chain - Germany | 0 | - | 4.31 | 22,497 |
| The Trojan War | 0 | - | 4.83 | 39,489 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,845 |
| Word Chain - Italy | 0 | - | 4.07 | 23,112 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,005 |
| Famous Nordic People | 0 | - | 4.34 | 19,922 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,556 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,632 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,257 |
| 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 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,627 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,750 |
| Australian Capitals | 0 | - | 4.92 | 62,613 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,569 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,040 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,004 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,884 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,353 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,133 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,957 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,726 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,102 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,453 |
| Europe Map Quiz | 0 | - | 5.00 | 4,738,054 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,046 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,686 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,007 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,040 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,701 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,259 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,708 |
| Capitals of French Regions | 0 | - | 4.45 | 16,002 |
| Capitals of German States | 0 | - | 4.74 | 28,864 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,146 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,091 |
| Ancient Greek Words | 0 | - | 4.92 | 110,898 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,120 |
| Imagine Lyrics | 0 | - | 4.53 | 43,101 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,921 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,731 |
| European Physical Geography | 0 | - | 4.26 | 33,395 |
| Geography of Russia | 0 | - | 4.57 | 21,450 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,815 |
| Italian History A-Z | 0 | - | 4.21 | 17,591 |
| Serie A Champions | 0 | - | 4.29 | 57,849 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,990 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,758 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,338 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,235 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,422 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,513 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,377 |
| Elton John Quiz | 0 | - | 4.48 | 18,418 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,231 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,964 |
| Geography of the British Empire | 0 | - | 4.48 | 39,530 |
| Champions League Top 4 | 0 | - | 4.77 | 134,296 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,418 |
| Asia Map Quiz | 0 | - | 4.99 | 908,689 |
| Countries of Africa | 0 | - | 5.00 | 2,513,735 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,988 |
| African East Coast | 0 | - | 4.96 | 95,252 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,136 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,008 |
| Australia Map Quiz | 0 | - | 4.94 | 342,840 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,961 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,582 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,363 |
