| Regions of Italy | 0 | - | 4.92 | 74,684 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,281 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,044 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,153 |
| States of Germany | 0 | - | 4.96 | 150,008 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,999 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,792 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,309 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,137 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,403 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,572 |
| Official European Union Languages | 0 | - | 4.97 | 236,494 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,686 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,402 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,359 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,132 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,427 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,531 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,772 |
| Name that Greek Letter | 0 | - | 4.94 | 321,628 |
| Italian Foods | 0 | - | 4.31 | 72,167 |
| The Mafia Quiz | 0 | - | 4.46 | 23,203 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,562 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,110 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,038 |
| Roman Emperors | 0 | - | 4.95 | 118,441 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,478 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,402 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,237 |
| Celtic Nations | 0 | - | 4.69 | 46,810 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,273 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,837 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,786 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,838 |
| Languages of Spain | 0 | - | 4.36 | 23,146 |
| Counties of England | 0 | - | 4.97 | 789,049 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,801 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,666 |
| Regions of France | 0 | - | 4.78 | 119,200 |
| France Immigration by Country | 0 | - | 4.72 | 75,955 |
| Famous Germans | 0 | - | 4.50 | 54,604 |
| German Groups of Things | 0 | - | 4.46 | 38,304 |
| Germany True or False? | 0 | - | 4.61 | 48,529 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,460 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,769 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,043 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,937 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,318 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,200 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,133 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,223 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,758 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,938 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,102 |
| Geography of the French Empire | 0 | - | 4.48 | 26,925 |
| The French Revolution | 0 | - | 4.46 | 23,780 |
| France Multiple Choice | 0 | - | 4.38 | 40,633 |
| History of France | 0 | - | 4.59 | 56,013 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,671 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,039 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,989 |
| American to British Word Translation | 0 | - | 4.06 | 117,047 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,899 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,068 |
| Champions League Winners | 0 | - | 4.92 | 996,152 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,610 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,479 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,167 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,130 |
| Departments of France | 0 | - | 4.93 | 52,790 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,461 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,462 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,436 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,445 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,976 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,008 |
| Slavic Languages | 0 | - | 4.67 | 53,969 |
| Word Chain - France | 0 | - | 4.38 | 42,578 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,941 |
| History of The Netherlands | 0 | - | 4.46 | 17,308 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,242 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,141 |
| British Spellings | 0 | - | 4.07 | 99,201 |
| British Groups of Things | 0 | - | 4.25 | 82,668 |
| British Acronyms | 0 | - | 4.39 | 45,617 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| Geography of Scotland | 0 | - | 4.63 | 21,476 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,782 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,404 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,509 |
| Geography of Germany | 0 | - | 4.35 | 17,082 |
| History of Germany | 0 | - | 4.39 | 52,613 |
| Italian Inventions | 0 | - | 3.81 | 18,409 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,529 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,660 |
| Roman Names for Places | 0 | - | 4.62 | 57,864 |
| History of Spain | 0 | - | 4.29 | 21,000 |
| British to American Word Translation | 0 | - | 3.74 | 253,295 |
| British Foods by Description | 0 | - | 3.94 | 48,229 |
| British and American Word Differences | 0 | - | 2.67 | 45,910 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,505 |
| Bridges of London | 0 | - | 4.17 | 10,062 |
| British Sport Trivia | 0 | - | 4.37 | 20,363 |
| Famous Welsh People | 0 | - | 4.21 | 9,770 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,495 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| Famous French People | 0 | - | 4.12 | 27,934 |
| Movies Set in France | 0 | - | 4.26 | 13,071 |
| French Inventions | 0 | - | 4.08 | 13,864 |
| History of Paris | 0 | - | 4.24 | 13,613 |
| Word Chain - Germany | 0 | - | 4.31 | 22,474 |
| The Trojan War | 0 | - | 4.83 | 39,424 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,511 |
| Famous Nordic People | 0 | - | 4.34 | 19,851 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,542 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,380 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,237 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,460 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,323 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,083 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,382 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,885 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,822 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,691 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,204 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,867 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,658 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,616 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,012 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,292 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,588 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,985 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,610 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,979 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,584 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,370 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,140 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,605 |
| Capitals of French Regions | 0 | - | 4.45 | 15,983 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,947 |
| Ancient Greek Words | 0 | - | 4.92 | 110,679 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,116 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,040 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,306 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,037 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,173 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Geography of Russia | 0 | - | 4.57 | 21,424 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,772 |
| Italian History A-Z | 0 | - | 4.21 | 17,381 |
| Serie A Champions | 0 | - | 4.29 | 57,719 |
| The Life of Julius Caesar | 0 | - | 4.39 | 38,952 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,689 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,209 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,391 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,170 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,761 |
| Geography of the British Empire | 0 | - | 4.48 | 39,469 |
| Champions League Top 4 | 0 | - | 4.77 | 133,754 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,865 |
| Asia Map Quiz | 0 | - | 4.99 | 906,860 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,528 |
| Countries of Africa | 0 | - | 5.00 | 2,507,205 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,797 |
| African East Coast | 0 | - | 4.96 | 95,026 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,905 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,780 |
| Australia Map Quiz | 0 | - | 4.94 | 342,444 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,414 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,584 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,092 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,196 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,935 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,275 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,200 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,517 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,885 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,261 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,474 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,152 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,910 |
