| European Countries by First 2 Letters | 0 | - | 4.95 | 531,747 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,622 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,343 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,936 |
| States of Germany | 0 | - | 4.95 | 154,029 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,546 |
| Regions of Italy | 0 | - | 4.92 | 76,723 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,654 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,038 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,618 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,807 |
| Regions of France | 0 | - | 4.70 | 121,757 |
| France Immigration by Country | 0 | - | 4.70 | 76,834 |
| Departments of France | 0 | - | 4.93 | 54,871 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,587 |
| Official European Union Languages | 0 | - | 4.97 | 239,456 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,458 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,220 |
| Geography of the French Empire | 0 | - | 4.45 | 27,197 |
| The French Revolution | 0 | - | 4.47 | 24,111 |
| France Multiple Choice | 0 | - | 4.39 | 40,812 |
| History of France | 0 | - | 4.61 | 57,471 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,012 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,225 |
| Famous French People | 0 | - | 4.07 | 36,008 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,581 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,002 |
| French History Multiple Choice | 0 | - | 4.55 | 33,181 |
| History of Italy | 0 | - | 4.55 | 32,112 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,211 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,784 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,382 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,472 |
| Celtic Nations | 0 | - | 4.61 | 47,063 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,889 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,218 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,020 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Famous Germans | 0 | - | 4.50 | 55,676 |
| German Groups of Things | 0 | - | 4.47 | 38,599 |
| Germany True or False? | 0 | - | 4.61 | 48,965 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,343 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,168 |
| Italy True or False? | 0 | - | 4.42 | 47,557 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,640 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,380 |
| Counties of England | 0 | - | 4.97 | 801,343 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,657 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,765 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,167 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,567 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,616 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,286 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,719 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,953 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,377 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,558 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,388 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,677 |
| Champions League Winners | 0 | - | 4.92 | 1,013,398 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,695 |
| History of Austria | 0 | - | 4.70 | 17,953 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,544 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| American to British Word Translation | 0 | - | 4.14 | 139,546 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,024 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,158 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,472 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,446 |
| Presidents of France | 0 | - | 4.25 | 24,300 |
| Italian Foods | 0 | - | 4.30 | 73,142 |
| The Mafia Quiz | 0 | - | 4.46 | 23,412 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,704 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,965 |
| British Spellings | 0 | - | 4.06 | 99,564 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| British Acronyms | 0 | - | 4.40 | 45,901 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,056 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| England or Wales? | 0 | - | 4.94 | 45,900 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,667 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,708 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,160 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,280 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,791 |
| Slavic Languages | 0 | - | 4.68 | 54,619 |
| France A-Z | 0 | - | 4.16 | 38,312 |
| Geography of Germany | 0 | - | 4.35 | 17,248 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,754 |
| Name that Greek Letter | 0 | - | 4.93 | 324,684 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,706 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| History of Spain | 0 | - | 4.23 | 21,146 |
| Languages of Spain | 0 | - | 4.36 | 23,398 |
| British to American Word Translation | 0 | - | 3.74 | 255,276 |
| British Foods by Description | 0 | - | 3.94 | 48,364 |
| British and American Word Differences | 0 | - | 2.63 | 46,916 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,190 |
| Bridges of London | 0 | - | 4.17 | 10,135 |
| British Sport Trivia | 0 | - | 4.37 | 20,511 |
| Famous Welsh People | 0 | - | 4.34 | 11,651 |
| Malta Country Quiz | 0 | - | 4.81 | 31,203 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,642 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,312 |
| French Foods | 0 | - | 4.00 | 27,758 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,438 |
| The Trojan War | 0 | - | 4.83 | 39,935 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,688 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,150 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,149 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,491 |
| Roman Emperors | 0 | - | 4.95 | 120,909 |
| Famous Nordic People | 0 | - | 4.34 | 20,239 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,631 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,041 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,385 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,565 |
| People on Money - England | 0 | - | 4.29 | 16,636 |
| Name a Valid English City | 0 | - | 4.19 | 16,797 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,318 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,049 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,675 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,054 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,902 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,058 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,725 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,057 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,858 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,370 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,588 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,278 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,019 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,453 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,106 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,404 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,367 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,204 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,428 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,650 |
| Kings of France Quiz | 0 | - | 4.20 | 32,879 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,090 |
| Capitals of German States | 0 | - | 4.74 | 29,036 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,500 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,021 |
| Ancient Greek Words | 0 | - | 4.93 | 112,256 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,540 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,890 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,571 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,950 |
| Australian Capitals | 0 | - | 4.92 | 62,805 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| Geography of Russia | 0 | - | 4.57 | 21,575 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,077 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 34,015 |
| Ligue 1 Champions | 0 | - | 4.21 | 48,757 |
| Tour de France Winners | 0 | - | 4.27 | 15,471 |
| Embarrassing Chapters in French History | 0 | - | 3.65 | 20,161 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,103 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,414 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,315 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,268 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,418 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,769 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,438 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,117 |
| Geography of the British Empire | 0 | - | 4.48 | 39,815 |
| Champions League Top 4 | 0 | - | 4.77 | 138,269 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,134 |
| Asia Map Quiz | 0 | - | 4.99 | 923,140 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,112 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,152 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,286 |
| Australia Map Quiz | 0 | - | 4.95 | 345,787 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,979 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,474 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,845 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,306 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,751 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,795 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,101 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,903 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,606 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,302 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,936 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,354 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,412 |
