| European Countries by First 2 Letters | 0 | - | 4.95 | 527,036 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,744 |
| Official European Union Languages | 0 | - | 4.97 | 237,328 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,129 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,939 |
| Celtic Nations | 0 | - | 4.69 | 46,843 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,645 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,624 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,267 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,986 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,821 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,856 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,131 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,664 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,230 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,398 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,583 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,874 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,527 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,421 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,525 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,071 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,764 |
| States of Germany | 0 | - | 4.96 | 150,678 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,215 |
| Regions of Italy | 0 | - | 4.92 | 74,989 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,993 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,828 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,540 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,826 |
| Champions League Winners | 0 | - | 4.92 | 998,764 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,485 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,614 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,134 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,508 |
| Slavic Languages | 0 | - | 4.68 | 54,083 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,487 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,296 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,163 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,734 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,646 |
| Departments of France | 0 | - | 4.93 | 53,074 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,409 |
| England or Wales? | 0 | - | 4.94 | 45,422 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,887 |
| Australian Capitals | 0 | - | 4.92 | 62,616 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,569 |
| Country Codes of Europe | 0 | - | 3.46 | 13,665 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,399 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,007 |
| History of Russia Quiz | 0 | - | 4.49 | 31,820 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,611 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,573 |
| Capitals of French Regions | 0 | - | 4.45 | 16,007 |
| Capitals of German States | 0 | - | 4.74 | 28,869 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,153 |
| History of Italy | 0 | - | 4.55 | 31,866 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,332 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,524 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,042 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,747 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,036 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,589 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,052 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,018 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,898 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,370 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,159 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,968 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,742 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,116 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,478 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,060 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,702 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,016 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,056 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,718 |
| Regions of France | 0 | - | 4.78 | 119,646 |
| France Immigration by Country | 0 | - | 4.72 | 76,085 |
| Famous Germans | 0 | - | 4.50 | 54,747 |
| German Groups of Things | 0 | - | 4.46 | 38,350 |
| Germany True or False? | 0 | - | 4.61 | 48,607 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,623 |
| The Trojan War | 0 | - | 4.83 | 39,503 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,460 |
| Name that Greek Letter | 0 | - | 4.94 | 322,143 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,915 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,736 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,179 |
| Roman Emperors | 0 | - | 4.95 | 118,841 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,949 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,107 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,173 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,711 |
| Asia Map Quiz | 0 | - | 4.99 | 909,021 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,052 |
| African East Coast | 0 | - | 4.96 | 95,308 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,193 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,050 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,661 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,384 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,542 |
| European Physical Geography | 0 | - | 4.26 | 33,400 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,999 |
| The Only European Country ... | 0 | - | 4.91 | 214,597 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,997 |
| Geography of Russia | 0 | - | 4.57 | 21,454 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| Presidents of France | 0 | - | 4.25 | 23,943 |
| Geography of the French Empire | 0 | - | 4.45 | 26,969 |
| The French Revolution | 0 | - | 4.46 | 23,834 |
| France Multiple Choice | 0 | - | 4.38 | 40,662 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,410 |
| The Vikings! | 0 | - | 4.46 | 28,269 |
| The Portuguese Empire | 0 | - | 4.58 | 12,008 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,978 |
| American to British Word Translation | 0 | - | 4.13 | 137,431 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,774 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,929 |
| Countries of Africa | 0 | - | 5.00 | 2,515,168 |
| Australia Map Quiz | 0 | - | 4.94 | 342,920 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,829 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,819 |
| History of France | 0 | - | 4.59 | 56,408 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,516 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,765 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,355 |
| Champions League Top 4 | 0 | - | 4.77 | 134,425 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,887 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,267 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,566 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,356 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,791 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,031 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,648 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,615 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,300 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,029 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,370 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,460 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,593 |
| European Geography A-Z | 0 | - | 4.28 | 49,063 |
| Word Chain - France | 0 | - | 4.38 | 42,634 |
| Ancient Greek Words | 0 | - | 4.93 | 110,945 |
| Italian Foods | 0 | - | 4.31 | 72,332 |
| The Mafia Quiz | 0 | - | 4.46 | 23,224 |
| History of The Netherlands | 0 | - | 4.46 | 17,347 |
| Canary Islands | 0 | - | 4.61 | 17,425 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,284 |
| British Spellings | 0 | - | 4.07 | 99,319 |
| British Groups of Things | 0 | - | 4.25 | 82,736 |
| British Acronyms | 0 | - | 4.39 | 45,668 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,976 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,428 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,630 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,634 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,547 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,239 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,951 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,759 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,514 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,689 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,473 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,918 |
| African Island Countries | 0 | - | 4.96 | 100,998 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,120 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,864 |
| Australian States and Territories | 0 | - | 4.96 | 141,169 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,083 |
| Australia Country Quiz | 0 | - | 4.43 | 69,370 |
| Australia True or False | 0 | - | 4.87 | 56,598 |
| Flags of North and South America | 0 | - | 4.99 | 368,958 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,291 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,375 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,578 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,956 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,014,979 |
| North America Map Quiz | 0 | - | 4.98 | 245,733 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,466 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,019 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,022 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,783 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,603 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,151 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,868 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,963 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,541 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,945 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,640 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,991 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,528 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,375 |
| Slavic Countries | 0 | - | 4.96 | 111,065 |
| Austria... or Australia? | 0 | - | 4.68 | 104,004 |
| Geography of Germany | 0 | - | 4.35 | 17,117 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,829 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,807 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,073 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,507 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,737 |
