| Germany Multiple Choice | 0 | - | 4.84 | 54,561 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,286 |
| States of Germany | 0 | - | 4.95 | 153,756 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,439 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,332 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,435 |
| Regions of Italy | 0 | - | 4.92 | 76,519 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,572 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,816 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,527 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,783 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,481 |
| Official European Union Languages | 0 | - | 4.97 | 239,256 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,321 |
| Famous Germans | 0 | - | 4.50 | 55,611 |
| German Groups of Things | 0 | - | 4.47 | 38,568 |
| Germany True or False? | 0 | - | 4.61 | 48,935 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,843 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,532 |
| Languages of the United Kingdom | 0 | - | 4.14 | 40,996 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,182 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,107 |
| Name that Greek Letter | 0 | - | 4.93 | 324,480 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,969 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,540 |
| History of Italy | 0 | - | 4.55 | 32,096 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,122 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,761 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,356 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,459 |
| Celtic Nations | 0 | - | 4.69 | 47,043 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,950 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,808 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,903 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 174,391 |
| Capitals of German States | 0 | - | 4.74 | 29,028 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,450 |
| Geography of Germany | 0 | - | 4.35 | 17,230 |
| History of Germany | 0 | - | 4.39 | 52,928 |
| Languages of Spain | 0 | - | 4.36 | 23,378 |
| Counties of England | 0 | - | 4.97 | 800,450 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,417 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,806 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,790 |
| Regions of France | 0 | - | 4.70 | 121,550 |
| France Immigration by Country | 0 | - | 4.70 | 76,777 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,272 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,992 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,578 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,371 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,575 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,298 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,526 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,659 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,744 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,564 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,494 |
| History of Austria | 0 | - | 4.70 | 17,935 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,066 |
| Geography of the French Empire | 0 | - | 4.45 | 27,186 |
| The French Revolution | 0 | - | 4.47 | 24,095 |
| France Multiple Choice | 0 | - | 4.39 | 40,793 |
| History of France | 0 | - | 4.61 | 57,400 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,417 |
| Word Chain - Germany | 0 | - | 4.31 | 22,647 |
| The Vikings! | 0 | - | 4.46 | 28,384 |
| The Portuguese Empire | 0 | - | 4.58 | 12,090 |
| American to British Word Translation | 0 | - | 4.14 | 139,470 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,298 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,485 |
| Champions League Winners | 0 | - | 4.92 | 1,011,930 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,532 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,789 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,926 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,161 |
| Departments of France | 0 | - | 4.93 | 54,726 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,666 |
| England or Wales? | 0 | - | 4.94 | 45,854 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,409 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,578 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,682 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,692 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,044 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,042 |
| Slavic Languages | 0 | - | 4.68 | 54,560 |
| Famous French People | 0 | - | 4.07 | 35,950 |
| Word Chain - France | 0 | - | 4.38 | 42,881 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,694 |
| Italian Foods | 0 | - | 4.30 | 73,059 |
| The Mafia Quiz | 0 | - | 4.46 | 23,398 |
| History of The Netherlands | 0 | - | 4.46 | 17,510 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,568 |
| Canary Islands | 0 | - | 4.62 | 17,505 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,916 |
| British Spellings | 0 | - | 4.06 | 99,536 |
| British Groups of Things | 0 | - | 4.25 | 82,954 |
| British Acronyms | 0 | - | 4.40 | 45,884 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,076 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,029 |
| Geography of Scotland | 0 | - | 4.63 | 21,693 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,720 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,985 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,979 |
| History of Spain | 0 | - | 4.23 | 21,136 |
| British to American Word Translation | 0 | - | 3.74 | 255,235 |
| British Foods by Description | 0 | - | 3.94 | 48,355 |
| British and American Word Differences | 0 | - | 2.63 | 46,911 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,158 |
| Bridges of London | 0 | - | 4.17 | 10,131 |
| British Sport Trivia | 0 | - | 4.37 | 20,495 |
| Famous Welsh People | 0 | - | 4.31 | 11,616 |
| Malta Country Quiz | 0 | - | 4.81 | 31,163 |
| History of Russia Quiz | 0 | - | 4.47 | 31,976 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,817 |
| Movies Set in France | 0 | - | 4.26 | 13,138 |
| French Inventions | 0 | - | 4.10 | 13,913 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| The Trojan War | 0 | - | 4.83 | 39,899 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,528 |
| Word Chain - Italy | 0 | - | 4.07 | 23,201 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,140 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,377 |
| Roman Emperors | 0 | - | 4.95 | 120,703 |
| Famous Nordic People | 0 | - | 4.34 | 20,222 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,627 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,014 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,374 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,554 |
| People on Money - England | 0 | - | 4.29 | 16,631 |
| Name a Valid English City | 0 | - | 4.19 | 16,775 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,117 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,877 |
| Australian Capitals | 0 | - | 4.92 | 62,791 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,193 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,600 |
| European Geography By Letter - C | 0 | - | 4.46 | 116,049 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,534 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,192 |
| European Geography By Letter - M | 0 | - | 4.69 | 131,628 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,589 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,154 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,403 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,008 |
| Europe Map Quiz | 0 | - | 5.00 | 4,777,044 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,419 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,076 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,371 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,341 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,010 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,877 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,369 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,604 |
| Capitals of French Regions | 0 | - | 4.45 | 16,144 |
| German Loan Words | 0 | - | 4.27 | 140,107 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,574 |
| Ancient Greek Words | 0 | - | 4.93 | 112,130 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,581 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,361 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,009 |
| European Physical Geography | 0 | - | 4.26 | 33,562 |
| Geography of Russia | 0 | - | 4.57 | 21,565 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,052 |
| German History A-Z | 0 | - | 4.49 | 24,696 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,657 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,366 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,280 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,230 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,405 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,751 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,427 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,036 |
| Geography of the British Empire | 0 | - | 4.48 | 39,800 |
| Champions League Top 4 | 0 | - | 4.77 | 137,871 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,630 |
| Asia Map Quiz | 0 | - | 4.99 | 921,883 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,262 |
| Africa Map Quiz | 0 | - | 5.00 | 2,124,457 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,111 |
| Australia Map Quiz | 0 | - | 4.95 | 345,588 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,166 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,011 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,204 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,801 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,063 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,495 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,422 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,753 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,611 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,295 |
| European Geography By Letter - I | 0 | - | 4.09 | 96,029 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,668 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,145 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,254 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,802 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,528 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,481 |
| European Geography A-Z | 0 | - | 4.29 | 49,405 |
| Country Codes of Europe | 0 | - | 3.43 | 13,768 |
| The Only European Country ... | 0 | - | 4.91 | 218,012 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,989 |
