| European Countries by First 2 Letters | 0 | - | 4.95 | 526,400 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,051 |
| States of Germany | 0 | - | 4.96 | 150,099 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,029 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,528 |
| Regions of Italy | 0 | - | 4.92 | 74,737 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,826 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,368 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,203 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,439 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,585 |
| Official European Union Languages | 0 | - | 4.97 | 236,660 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,710 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,243 |
| The Vikings! | 0 | - | 4.46 | 28,246 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,545 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,570 |
| History of Italy | 0 | - | 4.55 | 31,819 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,172 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,485 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,983 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,243 |
| Celtic Nations | 0 | - | 4.69 | 46,814 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,860 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,872 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,957 |
| Counties of England | 0 | - | 4.97 | 789,329 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,004 |
| Regions of France | 0 | - | 4.78 | 119,282 |
| France Immigration by Country | 0 | - | 4.72 | 75,972 |
| Famous Germans | 0 | - | 4.50 | 54,623 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany True or False? | 0 | - | 4.61 | 48,537 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,473 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,538 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,833 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,051 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,972 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,341 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,231 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,152 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,281 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,810 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,024 |
| History of Austria | 0 | - | 4.70 | 17,754 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,160 |
| Geography of the French Empire | 0 | - | 4.48 | 26,937 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| History of France | 0 | - | 4.59 | 56,069 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,709 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,386 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,705 |
| The Portuguese Empire | 0 | - | 4.54 | 11,993 |
| American to British Word Translation | 0 | - | 4.06 | 121,651 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,708 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,951 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,110 |
| Champions League Winners | 0 | - | 4.92 | 996,508 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,580 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,246 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,195 |
| Departments of France | 0 | - | 4.93 | 52,844 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,372 |
| England or Wales? | 0 | - | 4.94 | 45,324 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,517 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,452 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,999 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,068 |
| Slavic Languages | 0 | - | 4.67 | 53,990 |
| Word Chain - France | 0 | - | 4.38 | 42,584 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,433 |
| Italian Foods | 0 | - | 4.31 | 72,208 |
| The Mafia Quiz | 0 | - | 4.46 | 23,207 |
| History of The Netherlands | 0 | - | 4.46 | 17,313 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,251 |
| Canary Islands | 0 | - | 4.61 | 17,405 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,157 |
| British Spellings | 0 | - | 4.07 | 99,222 |
| British Groups of Things | 0 | - | 4.25 | 82,677 |
| British Acronyms | 0 | - | 4.39 | 45,621 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,950 |
| Geography of Scotland | 0 | - | 4.63 | 21,482 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,849 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,519 |
| Geography of Germany | 0 | - | 4.35 | 17,086 |
| History of Germany | 0 | - | 4.39 | 52,617 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,006 |
| Name that Greek Letter | 0 | - | 4.94 | 321,702 |
| History of Spain | 0 | - | 4.29 | 21,003 |
| Languages of Spain | 0 | - | 4.36 | 23,152 |
| British to American Word Translation | 0 | - | 3.74 | 253,523 |
| British Foods by Description | 0 | - | 3.94 | 48,233 |
| British and American Word Differences | 0 | - | 2.67 | 46,077 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,509 |
| Bridges of London | 0 | - | 4.17 | 10,063 |
| British Sport Trivia | 0 | - | 4.37 | 20,364 |
| Famous Welsh People | 0 | - | 4.21 | 9,771 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,555 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,146 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,568 |
| Famous French People | 0 | - | 4.12 | 27,956 |
| Movies Set in France | 0 | - | 4.26 | 13,074 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| History of Paris | 0 | - | 4.24 | 13,616 |
| Word Chain - Germany | 0 | - | 4.31 | 22,475 |
| The Trojan War | 0 | - | 4.83 | 39,435 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,549 |
| Word Chain - Italy | 0 | - | 4.07 | 23,089 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,044 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,058 |
| Roman Emperors | 0 | - | 4.95 | 118,500 |
| Famous Nordic People | 0 | - | 4.34 | 19,862 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,685 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,545 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,420 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,241 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,464 |
| People on Money - England | 0 | - | 4.29 | 16,565 |
| Name a Valid English City | 0 | - | 4.19 | 16,631 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,335 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,122 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,420 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,921 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,870 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,727 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,232 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,917 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,683 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,639 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,031 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,321 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,790 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,995 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,621 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,948 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,988 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,609 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,160 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,615 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Capitals of German States | 0 | - | 4.74 | 28,813 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,101 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,258 |
| Ancient Greek Words | 0 | - | 4.92 | 110,713 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,135 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,357 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,499 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,403 |
| European Physical Geography | 0 | - | 4.26 | 33,375 |
| Geography of Russia | 0 | - | 4.57 | 21,428 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,780 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,599 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,624 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,227 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,395 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,182 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,792 |
| Geography of the British Empire | 0 | - | 4.48 | 39,477 |
| Champions League Top 4 | 0 | - | 4.77 | 133,848 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,558 |
| Asia Map Quiz | 0 | - | 4.99 | 907,144 |
| Countries of Africa | 0 | - | 5.00 | 2,508,244 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,825 |
| African East Coast | 0 | - | 4.96 | 95,060 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,942 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,809 |
| Australia Map Quiz | 0 | - | 4.94 | 342,515 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,056 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,173 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,215 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,029 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,337 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,230 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,675 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,914 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,291 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,502 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,180 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,931 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,302 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,401 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,521 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,588 |
| European Geography A-Z | 0 | - | 4.28 | 49,007 |
| Country Codes of Europe | 0 | - | 3.46 | 13,654 |
| The Only European Country ... | 0 | - | 4.91 | 213,888 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,569 |
| Austria... or Australia? | 0 | - | 4.68 | 103,879 |
| Presidents of France | 0 | - | 4.25 | 23,905 |
| French Foods | 0 | - | 4.00 | 27,592 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,780 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,982 |
| Italian Inventions | 0 | - | 3.81 | 18,411 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,962 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,960 |
