| Regions of Italy | 0 | - | 4.92 | 76,338 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,812 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,506 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,233 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,838 |
| History of Italy | 0 | - | 4.55 | 32,067 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,015 |
| States of Germany | 0 | - | 4.95 | 153,397 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,324 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,474 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,557 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,449 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,765 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,371 |
| Official European Union Languages | 0 | - | 4.97 | 239,011 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,192 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,878 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,626 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,361 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,962 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,676 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,132 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,359 |
| Name that Greek Letter | 0 | - | 4.93 | 324,258 |
| Italian Foods | 0 | - | 4.30 | 72,987 |
| The Mafia Quiz | 0 | - | 4.46 | 23,382 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,927 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,402 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,672 |
| Roman Emperors | 0 | - | 4.95 | 120,456 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,733 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,437 |
| Celtic Nations | 0 | - | 4.69 | 47,006 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,544 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,662 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,575 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,550 |
| Languages of Spain | 0 | - | 4.36 | 23,357 |
| Counties of England | 0 | - | 4.97 | 799,441 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,503 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,691 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,561 |
| Regions of France | 0 | - | 4.70 | 121,346 |
| France Immigration by Country | 0 | - | 4.70 | 76,705 |
| Famous Germans | 0 | - | 4.50 | 55,555 |
| German Groups of Things | 0 | - | 4.46 | 38,534 |
| Germany True or False? | 0 | - | 4.61 | 48,908 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,175 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,522 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,358 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,483 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,005 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,438 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,601 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,278 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,392 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,183 |
| History of Austria | 0 | - | 4.70 | 17,918 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,921 |
| Geography of the French Empire | 0 | - | 4.45 | 27,161 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| France Multiple Choice | 0 | - | 4.39 | 40,777 |
| History of France | 0 | - | 4.61 | 57,316 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,277 |
| Word Chain - Italy | 0 | - | 4.07 | 23,194 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,133 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,297 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,362 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,205 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,306 |
| Champions League Winners | 0 | - | 4.92 | 1,010,466 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,433 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,136 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,552 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,824 |
| Departments of France | 0 | - | 4.93 | 54,545 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,249 |
| England or Wales? | 0 | - | 4.94 | 45,818 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,134 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,453 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,660 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,933 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,741 |
| Slavic Languages | 0 | - | 4.68 | 54,495 |
| Famous French People | 0 | - | 4.07 | 35,897 |
| Word Chain - France | 0 | - | 4.38 | 42,857 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,442 |
| History of The Netherlands | 0 | - | 4.46 | 17,493 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,522 |
| Canary Islands | 0 | - | 4.62 | 17,498 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,844 |
| British Spellings | 0 | - | 4.06 | 99,517 |
| British Groups of Things | 0 | - | 4.25 | 82,918 |
| British Acronyms | 0 | - | 4.40 | 45,863 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,971 |
| Geography of Scotland | 0 | - | 4.63 | 21,671 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,671 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,668 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,889 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,512 |
| Geography of Germany | 0 | - | 4.35 | 17,213 |
| History of Germany | 0 | - | 4.39 | 52,909 |
| Italian Inventions | 0 | - | 3.81 | 18,463 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,805 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,002 |
| Roman Names for Places | 0 | - | 4.62 | 58,427 |
| History of Spain | 0 | - | 4.23 | 21,124 |
| British to American Word Translation | 0 | - | 3.74 | 255,192 |
| British Foods by Description | 0 | - | 3.94 | 48,346 |
| British and American Word Differences | 0 | - | 2.63 | 46,901 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,002 |
| Bridges of London | 0 | - | 4.17 | 10,123 |
| British Sport Trivia | 0 | - | 4.37 | 20,488 |
| Famous Welsh People | 0 | - | 4.31 | 11,577 |
| History of Russia Quiz | 0 | - | 4.47 | 31,961 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,787 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| Word Chain - Germany | 0 | - | 4.31 | 22,633 |
| The Trojan War | 0 | - | 4.83 | 39,815 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,326 |
| Famous Nordic People | 0 | - | 4.34 | 20,184 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,979 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,365 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,547 |
| People on Money - England | 0 | - | 4.29 | 16,626 |
| Name a Valid English City | 0 | - | 4.19 | 16,758 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,782 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,678 |
| Australian Capitals | 0 | - | 4.92 | 62,764 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,045 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,446 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,839 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,392 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,054 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,397 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,242 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,054 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,318 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,887 |
| Europe Map Quiz | 0 | - | 5.00 | 4,773,236 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,374 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,035 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,330 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,311 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,927 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,837 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,565 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Capitals of German States | 0 | - | 4.74 | 28,993 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,415 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,093 |
| Ancient Greek Words | 0 | - | 4.93 | 111,983 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,657 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,207 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,213 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,157 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,905 |
| European Physical Geography | 0 | - | 4.26 | 33,545 |
| Geography of Russia | 0 | - | 4.57 | 21,557 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,029 |
| Italian History A-Z | 0 | - | 4.21 | 17,744 |
| Serie A Champions | 0 | - | 4.29 | 58,514 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,127 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,229 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,186 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,387 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,735 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,418 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,913 |
| Geography of the British Empire | 0 | - | 4.48 | 39,748 |
| Champions League Top 4 | 0 | - | 4.77 | 137,443 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,943 |
| Asia Map Quiz | 0 | - | 4.99 | 920,246 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,201 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,539 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,010 |
| Australia Map Quiz | 0 | - | 4.95 | 345,315 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,332 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,972 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,909 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,756 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,707 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,201 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,306 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,655 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,506 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,192 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,930 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,563 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,041 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,174 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,763 |
