| Germany Multiple Choice | 0 | - | 4.84 | 54,199 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,750 |
| States of Germany | 0 | - | 4.96 | 151,103 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,526 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,825 |
| Regions of Italy | 0 | - | 4.92 | 75,221 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 48,570 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,192 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,751 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,621 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,855 |
| Official European Union Languages | 0 | - | 4.97 | 237,673 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,321 |
| Famous Germans | 0 | - | 4.50 | 54,841 |
| German Groups of Things | 0 | - | 4.46 | 38,382 |
| Germany True or False? | 0 | - | 4.61 | 48,664 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,579 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,814 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,747 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,664 |
| Name that Greek Letter | 0 | - | 4.93 | 322,569 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,669 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,585 |
| History of Italy | 0 | - | 4.55 | 31,900 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,447 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,568 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,096 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,223 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,316 |
| Celtic Nations | 0 | - | 4.69 | 46,873 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,459 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,108 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,355 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,503 |
| Capitals of German States | 0 | - | 4.74 | 28,894 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,204 |
| Geography of Germany | 0 | - | 4.35 | 17,137 |
| History of Germany | 0 | - | 4.39 | 52,726 |
| Languages of Spain | 0 | - | 4.36 | 23,236 |
| Counties of England | 0 | - | 4.97 | 792,634 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,564 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,031 |
| Regions of France | 0 | - | 4.77 | 119,979 |
| France Immigration by Country | 0 | - | 4.72 | 76,210 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,727 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,898 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,067 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,156 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,838 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,623 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,600 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,296 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,694 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,347 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,332 |
| History of Austria | 0 | - | 4.70 | 17,801 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,797 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,863 |
| France Multiple Choice | 0 | - | 4.38 | 40,681 |
| History of France | 0 | - | 4.59 | 56,636 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,168 |
| Word Chain - Germany | 0 | - | 4.31 | 22,527 |
| The Vikings! | 0 | - | 4.46 | 28,287 |
| The Portuguese Empire | 0 | - | 4.58 | 12,028 |
| American to British Word Translation | 0 | - | 4.13 | 138,298 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,349 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,670 |
| Champions League Winners | 0 | - | 4.92 | 1,000,792 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,908 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,810 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,743 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,096 |
| Departments of France | 0 | - | 4.93 | 53,321 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,442 |
| England or Wales? | 0 | - | 4.94 | 45,492 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,266 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,749 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,510 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,627 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,302 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,863 |
| Slavic Languages | 0 | - | 4.68 | 54,152 |
| Word Chain - France | 0 | - | 4.38 | 42,677 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,525 |
| Italian Foods | 0 | - | 4.31 | 72,468 |
| The Mafia Quiz | 0 | - | 4.46 | 23,252 |
| History of The Netherlands | 0 | - | 4.46 | 17,362 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,358 |
| Canary Islands | 0 | - | 4.61 | 17,438 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,420 |
| British Spellings | 0 | - | 4.06 | 99,356 |
| British Groups of Things | 0 | - | 4.25 | 82,778 |
| British Acronyms | 0 | - | 4.39 | 45,706 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,994 |
| Geography of Scotland | 0 | - | 4.63 | 21,547 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,135 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,561 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,636 |
| History of Spain | 0 | - | 4.29 | 21,045 |
| British to American Word Translation | 0 | - | 3.74 | 254,910 |
| British Foods by Description | 0 | - | 3.94 | 48,293 |
| British and American Word Differences | 0 | - | 2.63 | 46,826 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,547 |
| Bridges of London | 0 | - | 4.17 | 10,081 |
| British Sport Trivia | 0 | - | 4.37 | 20,408 |
| Famous Welsh People | 0 | - | 4.27 | 10,746 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,404 |
| History of Russia Quiz | 0 | - | 4.49 | 31,845 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,642 |
| Famous French People | 0 | - | 4.12 | 28,140 |
| Movies Set in France | 0 | - | 4.26 | 13,097 |
| French Inventions | 0 | - | 4.08 | 13,876 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| The Trojan War | 0 | - | 4.83 | 39,569 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,179 |
| Word Chain - Italy | 0 | - | 4.07 | 23,135 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,069 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,288 |
| Roman Emperors | 0 | - | 4.95 | 119,253 |
| Famous Nordic People | 0 | - | 4.34 | 19,985 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,567 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,720 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,302 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,500 |
| People on Money - England | 0 | - | 4.29 | 16,590 |
| Name a Valid English City | 0 | - | 4.19 | 16,673 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,507 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,170 |
| Australian Capitals | 0 | - | 4.92 | 62,658 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,688 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,137 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,115 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,993 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,448 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,334 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,032 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,810 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,443 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,616 |
| Europe Map Quiz | 0 | - | 5.00 | 4,746,216 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,136 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,777 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,080 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,121 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,800 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.73 | 65,538 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,246 |
| Capitals of French Regions | 0 | - | 4.45 | 16,019 |
| German Loan Words | 0 | - | 4.27 | 135,621 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,448 |
| Ancient Greek Words | 0 | - | 4.93 | 111,110 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,072 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,146 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,750 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,648 |
| European Physical Geography | 0 | - | 4.26 | 33,425 |
| Geography of Russia | 0 | - | 4.57 | 21,481 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,859 |
| German History A-Z | 0 | - | 4.49 | 24,520 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,172 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,836 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,882 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,447 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,463 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,266 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,098 |
| Geography of the British Empire | 0 | - | 4.48 | 39,584 |
| Champions League Top 4 | 0 | - | 4.77 | 134,972 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,961 |
| Asia Map Quiz | 0 | - | 4.99 | 911,039 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,799 |
| Countries of Africa | 0 | - | 5.00 | 2,521,642 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,274 |
| African East Coast | 0 | - | 4.96 | 95,531 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,362 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,213 |
| Australia Map Quiz | 0 | - | 4.94 | 343,292 |
| United States Map Quiz | 0 | - | 4.98 | 4,148,611 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,733 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,092 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,468 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,951 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,237 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,441 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,861 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,107 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,728 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,679 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,363 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,090 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,433 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,526 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,653 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,331 |
| European Geography A-Z | 0 | - | 4.29 | 49,115 |
| Country Codes of Europe | 0 | - | 3.46 | 13,676 |
| The Only European Country ... | 0 | - | 4.91 | 215,171 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,337 |
