| European Countries by First 2 Letters | 0 | - | 4.95 | 527,088 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,752 |
| Official European Union Languages | 0 | - | 4.97 | 237,343 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,140 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,972 |
| Celtic Nations | 0 | - | 4.69 | 46,849 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,659 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,629 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,271 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,997 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,847 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,891 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,137 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,668 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,237 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,502 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,584 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,931 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,529 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,432 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,532 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,099 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,797 |
| States of Germany | 0 | - | 4.96 | 150,709 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,226 |
| Regions of Italy | 0 | - | 4.92 | 75,000 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,001 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,839 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,554 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,855 |
| Champions League Winners | 0 | - | 4.92 | 998,937 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,487 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,614 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,146 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,544 |
| Slavic Languages | 0 | - | 4.68 | 54,088 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,491 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,299 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,213 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,757 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,672 |
| Departments of France | 0 | - | 4.93 | 53,085 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,409 |
| England or Wales? | 0 | - | 4.94 | 45,426 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,918 |
| Australian Capitals | 0 | - | 4.92 | 62,618 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,939 |
| Country Codes of Europe | 0 | - | 3.46 | 13,666 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,411 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,018 |
| History of Russia Quiz | 0 | - | 4.49 | 31,823 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,612 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,580 |
| Capitals of French Regions | 0 | - | 4.45 | 16,009 |
| Capitals of German States | 0 | - | 4.74 | 28,870 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,158 |
| History of Italy | 0 | - | 4.55 | 31,868 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,340 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,526 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,045 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,908 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,131 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,590 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,055 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,021 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,901 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,371 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,166 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,968 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,743 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,116 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,484 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,064 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,706 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,018 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,058 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,720 |
| Regions of France | 0 | - | 4.78 | 119,663 |
| France Immigration by Country | 0 | - | 4.72 | 76,091 |
| Famous Germans | 0 | - | 4.50 | 54,753 |
| German Groups of Things | 0 | - | 4.46 | 38,353 |
| Germany True or False? | 0 | - | 4.61 | 48,608 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,625 |
| The Trojan War | 0 | - | 4.83 | 39,507 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,503 |
| Name that Greek Letter | 0 | - | 4.94 | 322,159 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,924 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,742 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,183 |
| Roman Emperors | 0 | - | 4.95 | 118,855 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,952 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,107 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,298 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,755 |
| Asia Map Quiz | 0 | - | 4.99 | 909,149 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,068 |
| African East Coast | 0 | - | 4.96 | 95,325 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,203 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,054 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,689 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,390 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,559 |
| European Physical Geography | 0 | - | 4.26 | 33,406 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,018 |
| The Only European Country ... | 0 | - | 4.91 | 214,631 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,014 |
| Geography of Russia | 0 | - | 4.57 | 21,455 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| Presidents of France | 0 | - | 4.25 | 23,944 |
| Geography of the French Empire | 0 | - | 4.45 | 26,972 |
| The French Revolution | 0 | - | 4.46 | 23,835 |
| France Multiple Choice | 0 | - | 4.38 | 40,664 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,411 |
| The Vikings! | 0 | - | 4.46 | 28,269 |
| The Portuguese Empire | 0 | - | 4.58 | 12,009 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,978 |
| American to British Word Translation | 0 | - | 4.13 | 137,508 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,776 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,952 |
| Countries of Africa | 0 | - | 5.00 | 2,515,498 |
| Australia Map Quiz | 0 | - | 4.94 | 342,936 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,856 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,821 |
| History of France | 0 | - | 4.59 | 56,421 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,562 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,775 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,361 |
| Champions League Top 4 | 0 | - | 4.77 | 134,474 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,944 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,273 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,637 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,359 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,793 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,032 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,652 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,615 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,302 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,030 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,372 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,461 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,596 |
| European Geography A-Z | 0 | - | 4.28 | 49,070 |
| Word Chain - France | 0 | - | 4.38 | 42,635 |
| Ancient Greek Words | 0 | - | 4.93 | 110,950 |
| Italian Foods | 0 | - | 4.31 | 72,341 |
| The Mafia Quiz | 0 | - | 4.46 | 23,224 |
| History of The Netherlands | 0 | - | 4.46 | 17,348 |
| Canary Islands | 0 | - | 4.61 | 17,426 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,293 |
| British Spellings | 0 | - | 4.07 | 99,322 |
| British Groups of Things | 0 | - | 4.25 | 82,738 |
| British Acronyms | 0 | - | 4.39 | 45,669 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,979 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,431 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,654 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,718 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,559 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,357 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,967 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,770 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,520 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,697 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,491 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,935 |
| African Island Countries | 0 | - | 4.96 | 101,003 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,129 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,874 |
| Australian States and Territories | 0 | - | 4.96 | 141,183 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,086 |
| Australia Country Quiz | 0 | - | 4.43 | 69,374 |
| Australia True or False | 0 | - | 4.87 | 56,604 |
| Flags of North and South America | 0 | - | 4.99 | 369,014 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,300 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,383 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,601 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,048 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,097 |
| North America Map Quiz | 0 | - | 4.98 | 245,801 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,469 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,068 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,072 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,787 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,605 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,379 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,946 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,969 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,549 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,968 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,644 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,013 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,539 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,385 |
| Slavic Countries | 0 | - | 4.96 | 111,077 |
| Austria... or Australia? | 0 | - | 4.68 | 104,012 |
| Geography of Germany | 0 | - | 4.35 | 17,118 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,829 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,809 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,076 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,545 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,740 |
