| European Countries by First 2 Letters | 0 | - | 4.95 | 533,267 |
| History of Russia Quiz | 0 | - | 4.47 | 32,032 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,913 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,888 |
| Official European Union Languages | 0 | - | 4.97 | 240,471 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,891 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,576 |
| Geography of Russia | 0 | - | 4.57 | 21,628 |
| Slavic Languages | 0 | - | 4.67 | 54,805 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,414 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,121 |
| Celtic Nations | 0 | - | 4.61 | 47,131 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,175 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,349 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,782 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,441 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,965 |
| Slavic Countries | 0 | - | 4.96 | 112,568 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,775 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,534 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,067 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,271 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,936 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,844 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,331 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,238 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,041 |
| Word Chain - Russia | 0 | - | 4.33 | 15,811 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,632 |
| States of Germany | 0 | - | 4.95 | 155,061 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,860 |
| Regions of Italy | 0 | - | 4.92 | 77,323 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,971 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,684 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,963 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Champions League Winners | 0 | - | 4.92 | 1,018,667 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,814 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,743 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,490 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,672 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,504 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,472 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,402 |
| Departments of France | 0 | - | 4.93 | 55,481 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,796 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,671 |
| England or Wales? | 0 | - | 4.94 | 46,094 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,612 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,092 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,322 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,137 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,760 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,059 |
| Embarrassing Chapters in Russian History | 0 | - | 3.68 | 20,376 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,376 |
| Name that Greek Letter | 0 | - | 4.93 | 325,406 |
| History of Italy | 0 | - | 4.55 | 32,199 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,572 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,483 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,316 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,642 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,803 |
| Famous Russians | 0 | - | 4.16 | 23,936 |
| Capitals of French Regions | 0 | - | 4.45 | 16,217 |
| Capitals of German States | 0 | - | 4.74 | 29,102 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,602 |
| The Trojan War | 0 | - | 4.83 | 40,124 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,362 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,732 |
| Roman Emperors | 0 | - | 4.95 | 121,525 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,840 |
| Australian Capitals | 0 | - | 4.92 | 62,886 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,547 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,996 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,548 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,111 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,490 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,020 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,425 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,001 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,277 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,914 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,592 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,263 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,533 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,490 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,660 |
| Regions of France | 0 | - | 4.70 | 122,516 |
| France Immigration by Country | 0 | - | 4.70 | 77,043 |
| Famous Germans | 0 | - | 4.50 | 55,899 |
| German Groups of Things | 0 | - | 4.47 | 38,684 |
| Germany True or False? | 0 | - | 4.61 | 49,091 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,620 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,730 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,587 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,979 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,519 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,999 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,750 |
| Asia Map Quiz | 0 | - | 4.99 | 927,260 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,507 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,650 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,495 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,012 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,382 |
| European Physical Geography | 0 | - | 4.26 | 33,623 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,612 |
| Country Codes of Europe | 0 | - | 3.45 | 13,857 |
| The Only European Country ... | 0 | - | 4.91 | 219,775 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,930 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,181 |
| History of Austria | 0 | - | 4.70 | 17,993 |
| Presidents of France | 0 | - | 4.25 | 24,389 |
| Geography of the French Empire | 0 | - | 4.45 | 27,242 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,767 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Ancient Greek Words | 0 | - | 4.93 | 112,740 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,660 |
| The Vikings! | 0 | - | 4.46 | 28,433 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,454 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,139 |
| American to British Word Translation | 0 | - | 4.14 | 139,879 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,101 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,503 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,863 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,951 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,056 |
| Champions League Top 4 | 0 | - | 4.78 | 139,748 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,259 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,324 |
| African East Coast | 0 | - | 4.96 | 96,970 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,872 |
| Australia Map Quiz | 0 | - | 4.95 | 346,644 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,379 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,711 |
| European Geography By Letter - E | 0 | - | 4.25 | 122,373 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,875 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,531 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,327 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,852 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,503 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,842 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,768 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,962 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,084 |
| European Geography A-Z | 0 | - | 4.29 | 49,538 |
| Austria... or Australia? | 0 | - | 4.67 | 104,881 |
| Famous French People | 0 | - | 4.05 | 36,196 |
| Word Chain - France | 0 | - | 4.38 | 42,976 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,303 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Italian Foods | 0 | - | 4.30 | 73,430 |
| Countries Italy Declared War On | 0 | - | 4.77 | 50,291 |
| The Mafia Quiz | 0 | - | 4.46 | 23,455 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,679 |
| History of The Netherlands | 0 | - | 4.46 | 17,580 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,191 |
| British Spellings | 0 | - | 4.06 | 99,642 |
| British Groups of Things | 0 | - | 4.26 | 83,050 |
| British Acronyms | 0 | - | 4.40 | 45,995 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,136 |
| British Monopoly Board | 0 | - | 4.52 | 41,301 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,841 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,294 |
| Countries of Africa | 0 | - | 5.00 | 2,566,562 |
| Australian States and Territories | 0 | - | 4.96 | 143,138 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,562 |
| Australia True or False | 0 | - | 4.87 | 57,252 |
| Flags of North and South America | 0 | - | 4.99 | 378,530 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,100 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,028 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,935 |
| South America Map Quiz | 0 | - | 5.00 | 1,559,043 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,798 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,034,052 |
| North America Map Quiz | 0 | - | 4.98 | 253,052 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,053 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,411 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,662 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,700 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,268 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,566 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,769 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,856 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,597 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,449 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,957 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,951 |
| Seas of Europe | 0 | - | 4.37 | 84,983 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,848 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,690 |
