| European Countries by First 2 Letters | 0 | - | 4.95 | 527,364 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,163 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,707 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,690 |
| States of Germany | 0 | - | 4.96 | 150,880 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,285 |
| Regions of Italy | 0 | - | 4.92 | 75,056 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,044 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,016 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,644 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,605 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,800 |
| Official European Union Languages | 0 | - | 4.97 | 237,499 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,221 |
| Regions of France | 0 | - | 4.78 | 119,764 |
| France Immigration by Country | 0 | - | 4.72 | 76,138 |
| Departments of France | 0 | - | 4.93 | 53,164 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,226 |
| Geography of the French Empire | 0 | - | 4.45 | 26,983 |
| The French Revolution | 0 | - | 4.46 | 23,848 |
| France Multiple Choice | 0 | - | 4.38 | 40,673 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,793 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,612 |
| History of France | 0 | - | 4.59 | 56,502 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,710 |
| Word Chain - France | 0 | - | 4.38 | 42,661 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,012 |
| Name that Greek Letter | 0 | - | 4.93 | 322,328 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,647 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,494 |
| History of Italy | 0 | - | 4.55 | 31,880 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,386 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,545 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,070 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,069 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,300 |
| Celtic Nations | 0 | - | 4.69 | 46,861 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,146 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,049 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,048 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,152 |
| Capitals of French Regions | 0 | - | 4.45 | 16,011 |
| Languages of Spain | 0 | - | 4.36 | 23,215 |
| Counties of England | 0 | - | 4.97 | 791,823 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,056 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,944 |
| Famous Germans | 0 | - | 4.50 | 54,796 |
| German Groups of Things | 0 | - | 4.46 | 38,368 |
| Germany True or False? | 0 | - | 4.61 | 48,632 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,672 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,803 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,005 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,127 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,763 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,579 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,510 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,267 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,609 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,217 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,986 |
| History of Austria | 0 | - | 4.70 | 17,792 |
| Famous French People | 0 | - | 4.12 | 28,108 |
| Movies Set in France | 0 | - | 4.26 | 13,093 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,639 |
| French Inventions | 0 | - | 4.08 | 13,873 |
| History of Paris | 0 | - | 4.24 | 13,628 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,080 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,418 |
| The Vikings! | 0 | - | 4.46 | 28,277 |
| The Portuguese Empire | 0 | - | 4.58 | 12,020 |
| American to British Word Translation | 0 | - | 4.13 | 137,995 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,268 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,514 |
| Champions League Winners | 0 | - | 4.92 | 999,841 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,846 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,507 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,476 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,896 |
| Presidents of France | 0 | - | 4.25 | 23,958 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,419 |
| England or Wales? | 0 | - | 4.94 | 45,454 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,089 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,688 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,494 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,622 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,211 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,698 |
| Slavic Languages | 0 | - | 4.68 | 54,121 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,509 |
| Italian Foods | 0 | - | 4.31 | 72,411 |
| The Mafia Quiz | 0 | - | 4.46 | 23,237 |
| History of The Netherlands | 0 | - | 4.46 | 17,351 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,319 |
| Canary Islands | 0 | - | 4.61 | 17,428 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,328 |
| British Spellings | 0 | - | 4.07 | 99,337 |
| British Groups of Things | 0 | - | 4.25 | 82,752 |
| British Acronyms | 0 | - | 4.39 | 45,684 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,986 |
| Geography of Scotland | 0 | - | 4.63 | 21,526 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,067 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,324 |
| French Foods | 0 | - | 4.00 | 27,631 |
| France A-Z | 0 | - | 4.16 | 38,103 |
| Geography of Germany | 0 | - | 4.35 | 17,125 |
| History of Germany | 0 | - | 4.39 | 52,699 |
| History of Spain | 0 | - | 4.29 | 21,036 |
| British to American Word Translation | 0 | - | 3.74 | 254,874 |
| British Foods by Description | 0 | - | 3.94 | 48,283 |
| British and American Word Differences | 0 | - | 2.64 | 46,812 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,538 |
| Bridges of London | 0 | - | 4.17 | 10,070 |
| British Sport Trivia | 0 | - | 4.37 | 20,398 |
| Famous Welsh People | 0 | - | 4.21 | 9,788 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,207 |
| History of Russia Quiz | 0 | - | 4.49 | 31,831 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,624 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,139 |
| Word Chain - Germany | 0 | - | 4.31 | 22,514 |
| The Trojan War | 0 | - | 4.83 | 39,534 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,034 |
| Word Chain - Italy | 0 | - | 4.07 | 23,129 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,063 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,228 |
| Roman Emperors | 0 | - | 4.95 | 119,044 |
| Famous Nordic People | 0 | - | 4.34 | 19,955 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,561 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,689 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,280 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,492 |
| People on Money - England | 0 | - | 4.29 | 16,582 |
| Name a Valid English City | 0 | - | 4.19 | 16,663 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,486 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,999 |
| Australian Capitals | 0 | - | 4.92 | 62,642 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,635 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,092 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,070 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,943 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,413 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,249 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,001 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,780 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,387 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,554 |
| Europe Map Quiz | 0 | - | 5.00 | 4,742,393 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,097 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,739 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,043 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,088 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,769 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,500 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,766 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,135 |
| Kings of France Quiz | 0 | - | 4.20 | 32,614 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,804 |
| Capitals of German States | 0 | - | 4.74 | 28,884 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,176 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,882 |
| Ancient Greek Words | 0 | - | 4.93 | 111,018 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,828 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,029 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,302 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,773 |
| European Physical Geography | 0 | - | 4.26 | 33,412 |
| Geography of Russia | 0 | - | 4.57 | 21,463 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,836 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 33,409 |
| Tour de France Winners | 0 | - | 4.27 | 15,274 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,063 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,800 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,784 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,797 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,386 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,250 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,440 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,254 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,043 |
| Geography of the British Empire | 0 | - | 4.48 | 39,565 |
| Champions League Top 4 | 0 | - | 4.77 | 134,722 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,345 |
| Asia Map Quiz | 0 | - | 4.99 | 909,983 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,741 |
| Countries of Africa | 0 | - | 5.00 | 2,517,888 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,164 |
| African East Coast | 0 | - | 4.96 | 95,418 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,283 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,112 |
| Australia Map Quiz | 0 | - | 4.94 | 343,079 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,906 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,700 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,871 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,417 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,719 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,034 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,396 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,825 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,066 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,690 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,651 |
