| European Countries by First 2 Letters | 0 | - | 4.95 | 526,921 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,123 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,640 |
| States of Germany | 0 | - | 4.96 | 150,584 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,189 |
| Regions of Italy | 0 | - | 4.92 | 74,958 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,981 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,715 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,515 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,579 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,727 |
| Official European Union Languages | 0 | - | 4.97 | 237,259 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,093 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,859 |
| The Vikings! | 0 | - | 4.46 | 28,265 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,621 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,619 |
| History of Italy | 0 | - | 4.55 | 31,861 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,320 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,520 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,031 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,263 |
| Celtic Nations | 0 | - | 4.69 | 46,841 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,974 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,514 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,755 |
| Counties of England | 0 | - | 4.97 | 790,771 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,207 |
| Regions of France | 0 | - | 4.78 | 119,590 |
| France Immigration by Country | 0 | - | 4.72 | 76,064 |
| Famous Germans | 0 | - | 4.50 | 54,724 |
| German Groups of Things | 0 | - | 4.46 | 38,345 |
| Germany True or False? | 0 | - | 4.61 | 48,596 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,604 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,717 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,940 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,100 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,134 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,515 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,392 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,221 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,505 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,036 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,642 |
| History of Austria | 0 | - | 4.70 | 17,779 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,477 |
| Geography of the French Empire | 0 | - | 4.45 | 26,964 |
| The French Revolution | 0 | - | 4.46 | 23,826 |
| France Multiple Choice | 0 | - | 4.38 | 40,658 |
| History of France | 0 | - | 4.59 | 56,360 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,964 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,406 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,761 |
| The Portuguese Empire | 0 | - | 4.54 | 12,006 |
| American to British Word Translation | 0 | - | 4.13 | 137,201 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,770 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,184 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,378 |
| Champions League Winners | 0 | - | 4.92 | 998,443 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,062 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,659 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,575 |
| Departments of France | 0 | - | 4.93 | 53,044 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,406 |
| England or Wales? | 0 | - | 4.94 | 45,409 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,837 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,484 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,613 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,115 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,450 |
| Slavic Languages | 0 | - | 4.68 | 54,067 |
| Word Chain - France | 0 | - | 4.38 | 42,621 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,480 |
| Italian Foods | 0 | - | 4.31 | 72,319 |
| The Mafia Quiz | 0 | - | 4.46 | 23,222 |
| History of The Netherlands | 0 | - | 4.46 | 17,343 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,287 |
| Canary Islands | 0 | - | 4.61 | 17,424 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,269 |
| British Spellings | 0 | - | 4.07 | 99,305 |
| British Groups of Things | 0 | - | 4.25 | 82,729 |
| British Acronyms | 0 | - | 4.39 | 45,666 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,975 |
| Geography of Scotland | 0 | - | 4.63 | 21,512 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,977 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,570 |
| Geography of Germany | 0 | - | 4.35 | 17,112 |
| History of Germany | 0 | - | 4.39 | 52,670 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,253 |
| Name that Greek Letter | 0 | - | 4.94 | 322,082 |
| History of Spain | 0 | - | 4.29 | 21,021 |
| Languages of Spain | 0 | - | 4.36 | 23,188 |
| British to American Word Translation | 0 | - | 3.75 | 254,794 |
| British Foods by Description | 0 | - | 3.94 | 48,274 |
| British and American Word Differences | 0 | - | 2.64 | 46,791 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,530 |
| Bridges of London | 0 | - | 4.17 | 10,066 |
| British Sport Trivia | 0 | - | 4.37 | 20,386 |
| Famous Welsh People | 0 | - | 4.21 | 9,785 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,827 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,349 |
| History of Russia Quiz | 0 | - | 4.49 | 31,815 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,607 |
| Famous French People | 0 | - | 4.12 | 28,066 |
| Movies Set in France | 0 | - | 4.26 | 13,090 |
| French Inventions | 0 | - | 4.08 | 13,869 |
| History of Paris | 0 | - | 4.24 | 13,623 |
| Word Chain - Germany | 0 | - | 4.31 | 22,500 |
| The Trojan War | 0 | - | 4.83 | 39,493 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,857 |
| Word Chain - Italy | 0 | - | 4.07 | 23,114 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,159 |
| Roman Emperors | 0 | - | 4.95 | 118,784 |
| Famous Nordic People | 0 | - | 4.34 | 19,923 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,706 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,557 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,636 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,260 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,482 |
| People on Money - England | 0 | - | 4.29 | 16,576 |
| Name a Valid English City | 0 | - | 4.19 | 16,649 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,436 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,780 |
| Australian Capitals | 0 | - | 4.92 | 62,613 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,577 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,042 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,006 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,887 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,359 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,142 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,962 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,733 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,108 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,463 |
| Europe Map Quiz | 0 | - | 5.00 | 4,738,387 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,050 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,695 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,011 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,046 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,707 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,263 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,711 |
| Capitals of French Regions | 0 | - | 4.45 | 16,003 |
| Capitals of German States | 0 | - | 4.74 | 28,864 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,149 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,377 |
| Ancient Greek Words | 0 | - | 4.92 | 110,903 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,562 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,577 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,112 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,774 |
| European Physical Geography | 0 | - | 4.26 | 33,396 |
| Geography of Russia | 0 | - | 4.57 | 21,452 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,817 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,411 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,719 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,344 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,422 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,232 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,972 |
| Geography of the British Empire | 0 | - | 4.48 | 39,534 |
| Champions League Top 4 | 0 | - | 4.77 | 134,342 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,488 |
| Asia Map Quiz | 0 | - | 4.99 | 908,749 |
| Countries of Africa | 0 | - | 5.00 | 2,514,056 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,000 |
| African East Coast | 0 | - | 4.96 | 95,262 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,144 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,014 |
| Australia Map Quiz | 0 | - | 4.94 | 342,859 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,106 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,606 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,367 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,465 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,763 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,350 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,786 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,026 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,638 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,609 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,293 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,023 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,366 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,456 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,588 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,946 |
| European Geography A-Z | 0 | - | 4.28 | 49,053 |
| Country Codes of Europe | 0 | - | 3.46 | 13,662 |
| The Only European Country ... | 0 | - | 4.91 | 214,512 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,943 |
| Austria... or Australia? | 0 | - | 4.68 | 103,987 |
| Presidents of France | 0 | - | 4.25 | 23,938 |
| French Foods | 0 | - | 4.00 | 27,611 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,821 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,803 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,409 |
| Italian Inventions | 0 | - | 3.81 | 18,416 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,059 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,975 |
