| Regions of Italy | 0 | - | 4.92 | 74,831 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,630 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,069 |
| History of Italy | 0 | - | 4.55 | 31,842 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,231 |
| States of Germany | 0 | - | 4.96 | 150,294 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,110 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,576 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,898 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,481 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,387 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,555 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,644 |
| Official European Union Languages | 0 | - | 4.97 | 237,070 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,814 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,609 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,388 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,516 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,736 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,446 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,574 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,579 |
| Name that Greek Letter | 0 | - | 4.94 | 321,842 |
| Italian Foods | 0 | - | 4.31 | 72,254 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,587 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,226 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,115 |
| Roman Emperors | 0 | - | 4.95 | 118,614 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,496 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,003 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,602 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,254 |
| Celtic Nations | 0 | - | 4.69 | 46,828 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,568 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,915 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,069 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,214 |
| Languages of Spain | 0 | - | 4.36 | 23,162 |
| Counties of England | 0 | - | 4.97 | 789,925 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,511 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,766 |
| Regions of France | 0 | - | 4.78 | 119,399 |
| France Immigration by Country | 0 | - | 4.72 | 76,012 |
| Famous Germans | 0 | - | 4.50 | 54,663 |
| German Groups of Things | 0 | - | 4.46 | 38,319 |
| Germany True or False? | 0 | - | 4.61 | 48,555 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,523 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,873 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,080 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,056 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,420 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,300 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,187 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,372 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,916 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,287 |
| History of Austria | 0 | - | 4.70 | 17,765 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,314 |
| Geography of the French Empire | 0 | - | 4.45 | 26,947 |
| The French Revolution | 0 | - | 4.46 | 23,801 |
| France Multiple Choice | 0 | - | 4.38 | 40,645 |
| History of France | 0 | - | 4.59 | 56,188 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,831 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,393 |
| Word Chain - Italy | 0 | - | 4.07 | 23,098 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,048 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,662 |
| The Vikings! | 0 | - | 4.46 | 28,253 |
| The Portuguese Empire | 0 | - | 4.54 | 12,000 |
| American to British Word Translation | 0 | - | 4.11 | 135,079 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,104 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,232 |
| Champions League Winners | 0 | - | 4.92 | 997,361 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,687 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,769 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,430 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,345 |
| Departments of France | 0 | - | 4.93 | 52,933 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,912 |
| England or Wales? | 0 | - | 4.94 | 45,364 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,658 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,517 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,462 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,608 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,045 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,234 |
| Slavic Languages | 0 | - | 4.67 | 54,027 |
| Word Chain - France | 0 | - | 4.38 | 42,598 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,012 |
| History of The Netherlands | 0 | - | 4.46 | 17,326 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,268 |
| Canary Islands | 0 | - | 4.61 | 17,412 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,202 |
| British Spellings | 0 | - | 4.07 | 99,270 |
| British Groups of Things | 0 | - | 4.25 | 82,708 |
| British Acronyms | 0 | - | 4.39 | 45,640 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,964 |
| Geography of Scotland | 0 | - | 4.63 | 21,498 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,884 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,725 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,542 |
| Geography of Germany | 0 | - | 4.35 | 17,096 |
| History of Germany | 0 | - | 4.39 | 52,644 |
| Italian Inventions | 0 | - | 3.81 | 18,415 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,565 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,703 |
| Roman Names for Places | 0 | - | 4.62 | 57,915 |
| History of Spain | 0 | - | 4.29 | 21,011 |
| British to American Word Translation | 0 | - | 3.75 | 254,554 |
| British Foods by Description | 0 | - | 3.94 | 48,264 |
| British and American Word Differences | 0 | - | 2.65 | 46,661 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,519 |
| Bridges of London | 0 | - | 4.17 | 10,064 |
| British Sport Trivia | 0 | - | 4.37 | 20,375 |
| Famous Welsh People | 0 | - | 4.21 | 9,776 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,684 |
| History of Russia Quiz | 0 | - | 4.49 | 31,802 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,588 |
| Famous French People | 0 | - | 4.12 | 27,991 |
| Movies Set in France | 0 | - | 4.26 | 13,082 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,619 |
| Word Chain - Germany | 0 | - | 4.31 | 22,484 |
| The Trojan War | 0 | - | 4.83 | 39,467 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,703 |
| Famous Nordic People | 0 | - | 4.34 | 19,882 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,549 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,569 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,245 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| People on Money - England | 0 | - | 4.29 | 16,570 |
| Name a Valid English City | 0 | - | 4.19 | 16,638 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,365 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,262 |
| Australian Capitals | 0 | - | 4.92 | 62,599 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,463 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,960 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,912 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,765 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,276 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,005 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,721 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,676 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,057 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,370 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,298 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,020 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,651 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,976 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,015 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,637 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,421 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,198 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,657 |
| Capitals of French Regions | 0 | - | 4.45 | 15,992 |
| Capitals of German States | 0 | - | 4.74 | 28,820 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,113 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,852 |
| Ancient Greek Words | 0 | - | 4.92 | 110,794 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,295 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,441 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,652 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,001 |
| European Physical Geography | 0 | - | 4.26 | 33,382 |
| Geography of Russia | 0 | - | 4.57 | 21,437 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,799 |
| Italian History A-Z | 0 | - | 4.21 | 17,546 |
| Serie A Champions | 0 | - | 4.29 | 57,773 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,974 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,730 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,275 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,408 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,213 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,891 |
| Geography of the British Empire | 0 | - | 4.48 | 39,508 |
| Champions League Top 4 | 0 | - | 4.77 | 134,056 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,849 |
| Asia Map Quiz | 0 | - | 4.99 | 907,832 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,605 |
| Countries of Africa | 0 | - | 5.00 | 2,510,632 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,895 |
| African East Coast | 0 | - | 4.96 | 95,141 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,016 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,902 |
| Australia Map Quiz | 0 | - | 4.94 | 342,678 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,412 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,626 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,328 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,257 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,205 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,530 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,270 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,708 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,942 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,328 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,537 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,202 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,958 |
