| European Countries by First 2 Letters | 0 | - | 4.95 | 526,516 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,613 |
| Official European Union Languages | 0 | - | 4.97 | 237,002 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,736 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,409 |
| Celtic Nations | 0 | - | 4.69 | 46,821 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,559 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,249 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,892 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,968 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,076 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,172 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,245 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,559 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,535 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,629 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,366 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,268 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,312 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,860 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,141 |
| States of Germany | 0 | - | 4.96 | 150,205 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,073 |
| Regions of Italy | 0 | - | 4.92 | 74,795 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,869 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,437 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,263 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,189 |
| Champions League Winners | 0 | - | 4.92 | 996,941 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,456 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,605 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,030 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,144 |
| Slavic Languages | 0 | - | 4.67 | 54,006 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,441 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,261 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,671 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,346 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,267 |
| Departments of France | 0 | - | 4.93 | 52,884 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,381 |
| England or Wales? | 0 | - | 4.94 | 45,350 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,580 |
| Australian Capitals | 0 | - | 4.92 | 62,596 |
| Europe Map Quiz | 0 | - | 5.00 | 4,733,036 |
| Country Codes of Europe | 0 | - | 3.46 | 13,656 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,187 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,866 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,585 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,530 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Capitals of German States | 0 | - | 4.74 | 28,817 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,107 |
| History of Italy | 0 | - | 4.55 | 31,830 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,209 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,990 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,990 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,679 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,435 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,936 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,879 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,743 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,251 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,953 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,699 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,656 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,043 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,342 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,010 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,639 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,964 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,004 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,620 |
| Regions of France | 0 | - | 4.78 | 119,344 |
| France Immigration by Country | 0 | - | 4.72 | 75,989 |
| Famous Germans | 0 | - | 4.50 | 54,648 |
| German Groups of Things | 0 | - | 4.46 | 38,311 |
| Germany True or False? | 0 | - | 4.61 | 48,542 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,487 |
| The Trojan War | 0 | - | 4.83 | 39,455 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,262 |
| Name that Greek Letter | 0 | - | 4.94 | 321,780 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,629 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,580 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,081 |
| Roman Emperors | 0 | - | 4.95 | 118,556 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,855 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,071 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,024 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,301 |
| Asia Map Quiz | 0 | - | 4.99 | 907,506 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,865 |
| African East Coast | 0 | - | 4.96 | 95,104 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,990 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,839 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,251 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,238 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,115 |
| European Physical Geography | 0 | - | 4.26 | 33,380 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,673 |
| The Only European Country ... | 0 | - | 4.91 | 213,995 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,657 |
| Geography of Russia | 0 | - | 4.57 | 21,434 |
| History of Austria | 0 | - | 4.70 | 17,761 |
| Presidents of France | 0 | - | 4.25 | 23,911 |
| Geography of the French Empire | 0 | - | 4.48 | 26,943 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| France Multiple Choice | 0 | - | 4.38 | 40,643 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| The Vikings! | 0 | - | 4.46 | 28,251 |
| The Portuguese Empire | 0 | - | 4.54 | 11,997 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,963 |
| American to British Word Translation | 0 | - | 4.10 | 133,016 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,725 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,537 |
| Countries of Africa | 0 | - | 5.00 | 2,509,476 |
| Australia Map Quiz | 0 | - | 4.94 | 342,599 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,442 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,793 |
| History of France | 0 | - | 4.59 | 56,135 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,587 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,721 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,247 |
| Champions League Top 4 | 0 | - | 4.77 | 133,955 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,401 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,184 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,731 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,245 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,690 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,924 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,307 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,514 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,189 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,943 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,312 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,413 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,528 |
| European Geography A-Z | 0 | - | 4.28 | 49,012 |
| Word Chain - France | 0 | - | 4.38 | 42,587 |
| Ancient Greek Words | 0 | - | 4.92 | 110,746 |
| Italian Foods | 0 | - | 4.31 | 72,230 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| History of The Netherlands | 0 | - | 4.46 | 17,321 |
| Canary Islands | 0 | - | 4.61 | 17,407 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,180 |
| British Spellings | 0 | - | 4.07 | 99,255 |
| British Groups of Things | 0 | - | 4.25 | 82,701 |
| British Acronyms | 0 | - | 4.39 | 45,629 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,952 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,401 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,209 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,399 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,458 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,816 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,691 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,625 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,331 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,533 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,209 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,535 |
| African Island Countries | 0 | - | 4.96 | 100,837 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,751 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,742 |
| Australian States and Territories | 0 | - | 4.96 | 140,962 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,034 |
| Australia Country Quiz | 0 | - | 4.43 | 69,304 |
| Australia True or False | 0 | - | 4.87 | 56,528 |
| Flags of North and South America | 0 | - | 4.99 | 367,720 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,171 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,200 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,302 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,607 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,369 |
| North America Map Quiz | 0 | - | 4.98 | 244,659 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,390 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,132 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,215 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,658 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,514 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,706 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,423 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,748 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,342 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,467 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,513 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,583 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,319 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,241 |
| Slavic Countries | 0 | - | 4.96 | 110,905 |
| Austria... or Australia? | 0 | - | 4.68 | 103,903 |
| Geography of Germany | 0 | - | 4.35 | 17,091 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,788 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,776 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,988 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,735 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,645 |
