| Germany Multiple Choice | 0 | - | 4.84 | 54,217 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,802 |
| States of Germany | 0 | - | 4.96 | 151,324 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,676 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,065 |
| Regions of Italy | 0 | - | 4.92 | 75,309 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,858 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,327 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,796 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,631 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,892 |
| Official European Union Languages | 0 | - | 4.97 | 237,802 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,412 |
| Famous Germans | 0 | - | 4.50 | 54,879 |
| German Groups of Things | 0 | - | 4.46 | 38,398 |
| Germany True or False? | 0 | - | 4.61 | 48,676 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,811 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,442 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,826 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,787 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,111 |
| Name that Greek Letter | 0 | - | 4.93 | 322,746 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,691 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,674 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,523 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,343 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,331 |
| Celtic Nations | 0 | - | 4.69 | 46,880 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,657 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,150 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,533 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,795 |
| Capitals of German States | 0 | - | 4.74 | 28,901 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,229 |
| Geography of Germany | 0 | - | 4.35 | 17,140 |
| History of Germany | 0 | - | 4.39 | 52,740 |
| Languages of Spain | 0 | - | 4.36 | 23,250 |
| Counties of England | 0 | - | 4.97 | 793,237 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,034 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,104 |
| Regions of France | 0 | - | 4.77 | 120,105 |
| France Immigration by Country | 0 | - | 4.72 | 76,276 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,770 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,964 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,112 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,167 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,920 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,658 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,671 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,326 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,741 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,451 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,625 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,929 |
| Geography of the French Empire | 0 | - | 4.45 | 27,007 |
| The French Revolution | 0 | - | 4.46 | 23,877 |
| France Multiple Choice | 0 | - | 4.38 | 40,687 |
| History of France | 0 | - | 4.59 | 56,677 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,309 |
| Word Chain - Germany | 0 | - | 4.31 | 22,536 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| The Portuguese Empire | 0 | - | 4.58 | 12,035 |
| American to British Word Translation | 0 | - | 4.13 | 138,460 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,405 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,766 |
| Champions League Winners | 0 | - | 4.92 | 1,001,651 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,958 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,076 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,865 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,263 |
| Departments of France | 0 | - | 4.93 | 53,453 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,468 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,404 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,805 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,521 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,635 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,352 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,006 |
| Slavic Languages | 0 | - | 4.68 | 54,196 |
| Word Chain - France | 0 | - | 4.38 | 42,697 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,537 |
| Italian Foods | 0 | - | 4.31 | 72,520 |
| The Mafia Quiz | 0 | - | 4.46 | 23,259 |
| History of The Netherlands | 0 | - | 4.46 | 17,375 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,381 |
| Canary Islands | 0 | - | 4.61 | 17,445 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,489 |
| British Spellings | 0 | - | 4.06 | 99,366 |
| British Groups of Things | 0 | - | 4.25 | 82,800 |
| British Acronyms | 0 | - | 4.39 | 45,722 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,002 |
| Geography of Scotland | 0 | - | 4.63 | 21,565 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,195 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,751 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,666 |
| History of Spain | 0 | - | 4.23 | 21,055 |
| British to American Word Translation | 0 | - | 3.74 | 254,937 |
| British Foods by Description | 0 | - | 3.94 | 48,300 |
| British and American Word Differences | 0 | - | 2.63 | 46,839 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,556 |
| Bridges of London | 0 | - | 4.17 | 10,085 |
| British Sport Trivia | 0 | - | 4.37 | 20,417 |
| Famous Welsh People | 0 | - | 4.29 | 11,149 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,539 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,663 |
| Famous French People | 0 | - | 4.12 | 28,159 |
| Movies Set in France | 0 | - | 4.26 | 13,103 |
| French Inventions | 0 | - | 4.08 | 13,881 |
| History of Paris | 0 | - | 4.24 | 13,632 |
| The Trojan War | 0 | - | 4.83 | 39,594 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,289 |
| Word Chain - Italy | 0 | - | 4.07 | 23,139 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,074 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,330 |
| Roman Emperors | 0 | - | 4.95 | 119,417 |
| Famous Nordic People | 0 | - | 4.34 | 20,005 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,572 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,750 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,307 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,504 |
| People on Money - England | 0 | - | 4.29 | 16,595 |
| Name a Valid English City | 0 | - | 4.19 | 16,686 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,539 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,341 |
| Australian Capitals | 0 | - | 4.92 | 62,671 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,734 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,164 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,137 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,025 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,484 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,388 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,060 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,836 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,467 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,654 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,794 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,158 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,811 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,095 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,136 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,824 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.73 | 65,565 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,287 |
| Capitals of French Regions | 0 | - | 4.45 | 16,025 |
| German Loan Words | 0 | - | 4.27 | 135,653 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,778 |
| Ancient Greek Words | 0 | - | 4.93 | 111,182 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,219 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,243 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,852 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,137 |
| European Physical Geography | 0 | - | 4.26 | 33,439 |
| Geography of Russia | 0 | - | 4.57 | 21,494 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,876 |
| German History A-Z | 0 | - | 4.49 | 24,534 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,426 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,879 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,940 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,472 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,483 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,278 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,168 |
| Geography of the British Empire | 0 | - | 4.48 | 39,601 |
| Champions League Top 4 | 0 | - | 4.77 | 135,192 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,689 |
| Asia Map Quiz | 0 | - | 4.99 | 911,883 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,820 |
| Countries of Africa | 0 | - | 5.00 | 2,523,988 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,367 |
| African East Coast | 0 | - | 4.96 | 95,614 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,442 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,271 |
| Australia Map Quiz | 0 | - | 4.94 | 343,443 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,747 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,772 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,305 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,504 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,134 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,451 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,468 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,884 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,141 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,760 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,701 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,388 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,105 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,451 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,552 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,672 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,467 |
| European Geography A-Z | 0 | - | 4.29 | 49,133 |
| Country Codes of Europe | 0 | - | 3.43 | 13,683 |
| The Only European Country ... | 0 | - | 4.91 | 215,421 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,472 |
