| Germany Multiple Choice | 0 | - | 4.84 | 54,777 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,539 |
| States of Germany | 0 | - | 4.95 | 155,075 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,872 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,293 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,653 |
| Regions of Italy | 0 | - | 4.92 | 77,341 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,978 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,696 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,972 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,894 |
| Official European Union Languages | 0 | - | 4.97 | 240,483 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,899 |
| Famous Germans | 0 | - | 4.50 | 55,903 |
| German Groups of Things | 0 | - | 4.47 | 38,685 |
| Germany True or False? | 0 | - | 4.61 | 49,093 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,619 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,582 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,102 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,415 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,445 |
| Name that Greek Letter | 0 | - | 4.93 | 325,424 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,124 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,067 |
| History of Italy | 0 | - | 4.55 | 32,201 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,588 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,868 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,485 |
| Celtic Nations | 0 | - | 4.61 | 47,131 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,483 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,181 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,371 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,830 |
| Capitals of German States | 0 | - | 4.74 | 29,103 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,606 |
| Geography of Germany | 0 | - | 4.36 | 17,454 |
| History of Germany | 0 | - | 4.39 | 53,011 |
| Languages of Spain | 0 | - | 4.36 | 23,477 |
| Counties of England | 0 | - | 4.97 | 804,862 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,136 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,295 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,609 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| Regions of France | 0 | - | 4.70 | 122,525 |
| France Immigration by Country | 0 | - | 4.70 | 77,048 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,624 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,591 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,988 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,521 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 104,003 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,298 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,944 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,847 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,375 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,248 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,069 |
| History of Austria | 0 | - | 4.70 | 17,995 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,885 |
| Geography of the French Empire | 0 | - | 4.45 | 27,243 |
| The French Revolution | 0 | - | 4.47 | 24,176 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,777 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,077 |
| Word Chain - Germany | 0 | - | 4.31 | 22,704 |
| The Vikings! | 0 | - | 4.46 | 28,434 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| American to British Word Translation | 0 | - | 4.14 | 139,890 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,704 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,394 |
| Champions League Winners | 0 | - | 4.92 | 1,018,841 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,865 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,535 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,491 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,422 |
| Departments of France | 0 | - | 4.93 | 55,495 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,800 |
| England or Wales? | 0 | - | 4.94 | 46,096 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,633 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,977 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,815 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,744 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,515 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,763 |
| Slavic Languages | 0 | - | 4.67 | 54,812 |
| Famous French People | 0 | - | 4.05 | 36,203 |
| Word Chain - France | 0 | - | 4.38 | 42,978 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Italian Foods | 0 | - | 4.30 | 73,435 |
| The Mafia Quiz | 0 | - | 4.46 | 23,457 |
| History of The Netherlands | 0 | - | 4.46 | 17,582 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,673 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,194 |
| British Spellings | 0 | - | 4.06 | 99,645 |
| British Groups of Things | 0 | - | 4.26 | 83,055 |
| British Acronyms | 0 | - | 4.40 | 46,000 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,136 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,841 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,098 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,494 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,326 |
| History of Spain | 0 | - | 4.23 | 21,179 |
| British to American Word Translation | 0 | - | 3.74 | 255,419 |
| British Foods by Description | 0 | - | 3.94 | 48,421 |
| British and American Word Differences | 0 | - | 2.63 | 46,944 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,264 |
| Bridges of London | 0 | - | 4.17 | 10,157 |
| British Sport Trivia | 0 | - | 4.39 | 20,558 |
| Famous Welsh People | 0 | - | 4.34 | 11,741 |
| History of Russia Quiz | 0 | - | 4.47 | 32,033 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,917 |
| Movies Set in France | 0 | - | 4.26 | 13,166 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| The Trojan War | 0 | - | 4.83 | 40,127 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,373 |
| Word Chain - Italy | 0 | - | 4.07 | 23,237 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,189 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,737 |
| Roman Emperors | 0 | - | 4.95 | 121,536 |
| Famous Nordic People | 0 | - | 4.34 | 20,364 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,652 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,159 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,428 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,587 |
| People on Money - England | 0 | - | 4.30 | 21,346 |
| Name a Valid English City | 0 | - | 4.19 | 16,849 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,153 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,775 |
| Australian Capitals | 0 | - | 4.92 | 62,887 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,584 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 122,032 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,599 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,151 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,528 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,066 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,451 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,024 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,292 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,932 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,634 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,597 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,270 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,539 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,494 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,674 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 66,063 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,650 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,807 |
| Capitals of French Regions | 0 | - | 4.45 | 16,218 |
| German Loan Words | 0 | - | 4.27 | 141,309 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,773 |
| Ancient Greek Words | 0 | - | 4.93 | 112,744 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,973 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,073 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,886 |
| European Physical Geography | 0 | - | 4.26 | 33,624 |
| Geography of Russia | 0 | - | 4.57 | 21,630 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,184 |
| German History A-Z | 0 | - | 4.49 | 24,960 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,717 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,664 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,461 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,509 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,513 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,864 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,499 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,420 |
| Geography of the British Empire | 0 | - | 4.48 | 39,893 |
| Champions League Top 4 | 0 | - | 4.78 | 139,782 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,808 |
| Asia Map Quiz | 0 | - | 4.99 | 927,323 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,467 |
| Officially Recognized Languages of India | 0 | - | 4.40 | 31,660 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,600 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,666 |
| Australia Map Quiz | 0 | - | 4.95 | 346,655 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,471 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,183 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,535 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,013 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,413 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,738 |
| European Geography By Letter - E | 0 | - | 4.25 | 122,850 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,918 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,562 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,364 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,882 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,530 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,862 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,777 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,967 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,095 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,636 |
| European Geography A-Z | 0 | - | 4.29 | 49,544 |
| Country Codes of Europe | 0 | - | 3.45 | 13,857 |
| The Only European Country ... | 0 | - | 4.91 | 219,818 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,951 |
