| European Countries by First 2 Letters | 0 | - | 4.95 | 525,977 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,509 |
| Official European Union Languages | 0 | - | 4.97 | 236,328 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,591 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,796 |
| Celtic Nations | 0 | - | 4.69 | 46,796 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,479 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,523 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,224 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,768 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,537 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,489 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,002 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,088 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,040 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,316 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,260 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,102 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,106 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,629 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,553 |
| States of Germany | 0 | - | 4.96 | 149,740 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,896 |
| Regions of Italy | 0 | - | 4.92 | 74,585 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,723 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,122 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,050 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,906 |
| Champions League Winners | 0 | - | 4.92 | 994,919 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,419 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,592 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,905 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,774 |
| Slavic Languages | 0 | - | 4.67 | 53,923 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,403 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,221 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,186 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,944 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,886 |
| Departments of France | 0 | - | 4.93 | 52,630 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,341 |
| England or Wales? | 0 | - | 4.94 | 45,276 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,258 |
| Australian Capitals | 0 | - | 4.92 | 62,583 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,926 |
| Country Codes of Europe | 0 | - | 3.46 | 13,645 |
| Top European Languages on a Map | 0 | - | 4.77 | 130,974 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,733 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,542 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,482 |
| Capitals of French Regions | 0 | - | 4.45 | 15,977 |
| Capitals of German States | 0 | - | 4.74 | 28,793 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,067 |
| History of Italy | 0 | - | 4.55 | 31,796 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,079 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,458 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,958 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,566 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,370 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,300 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,811 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,758 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,625 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,154 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,762 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,615 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,579 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,986 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,233 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,958 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,570 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,906 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,945 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,546 |
| Regions of France | 0 | - | 4.78 | 119,015 |
| France Immigration by Country | 0 | - | 4.72 | 75,908 |
| Famous Germans | 0 | - | 4.50 | 54,552 |
| German Groups of Things | 0 | - | 4.46 | 38,287 |
| Germany True or False? | 0 | - | 4.61 | 48,501 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,378 |
| The Trojan War | 0 | - | 4.83 | 39,392 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,115 |
| Name that Greek Letter | 0 | - | 4.94 | 321,407 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,325 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,237 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,955 |
| Roman Emperors | 0 | - | 4.95 | 118,269 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,713 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,021 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,848 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,436,929 |
| Asia Map Quiz | 0 | - | 4.99 | 905,620 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,697 |
| African East Coast | 0 | - | 4.96 | 94,902 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,767 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,715 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,811 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,150 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,702 |
| European Physical Geography | 0 | - | 4.26 | 33,363 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,321 |
| The Only European Country ... | 0 | - | 4.91 | 213,454 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,301 |
| Geography of Russia | 0 | - | 4.57 | 21,415 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Presidents of France | 0 | - | 4.25 | 23,863 |
| Geography of the French Empire | 0 | - | 4.48 | 26,910 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| France Multiple Choice | 0 | - | 4.38 | 40,617 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,369 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| The Portuguese Empire | 0 | - | 4.54 | 11,979 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,949 |
| American to British Word Translation | 0 | - | 4.06 | 117,001 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,679 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,279 |
| Countries of Africa | 0 | - | 5.00 | 2,504,021 |
| Australia Map Quiz | 0 | - | 4.94 | 342,206 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,046 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,752 |
| History of France | 0 | - | 4.59 | 55,864 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,517 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,648 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,156 |
| Champions League Top 4 | 0 | - | 4.77 | 133,461 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,374,481 |
| 10 African Countries with the Most Tourists | 0 | - | 4.38 | 60,090 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,454 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,147 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,386 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,834 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,202 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,427 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,099 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,879 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,264 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,364 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,470 |
| European Geography A-Z | 0 | - | 4.28 | 48,947 |
| Word Chain - France | 0 | - | 4.38 | 42,564 |
| Ancient Greek Words | 0 | - | 4.92 | 110,532 |
| Italian Foods | 0 | - | 4.30 | 72,117 |
| The Mafia Quiz | 0 | - | 4.46 | 23,193 |
| History of The Netherlands | 0 | - | 4.46 | 17,296 |
| Canary Islands | 0 | - | 4.61 | 17,388 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,078 |
| British Spellings | 0 | - | 4.07 | 99,181 |
| British Groups of Things | 0 | - | 4.25 | 82,656 |
| British Acronyms | 0 | - | 4.39 | 45,599 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,938 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,376 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,783 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,176 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,167 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,124 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,458 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,452 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,141 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,412 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,895 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,226 |
| African Island Countries | 0 | - | 4.96 | 100,641 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,432 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,579 |
| Australian States and Territories | 0 | - | 4.95 | 140,543 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,987 |
| Australia Country Quiz | 0 | - | 4.43 | 69,231 |
| Australia True or False | 0 | - | 4.87 | 56,457 |
| Flags of North and South America | 0 | - | 4.99 | 365,329 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,102 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,064 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,932 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,194 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,281 |
| North America Map Quiz | 0 | - | 4.98 | 243,956 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,332 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,216 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,264 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,528 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,452 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,223,841 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,490 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,571 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,181 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,013 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,397 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,154 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,128 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,055 |
| Slavic Countries | 0 | - | 4.96 | 110,765 |
| Austria... or Australia? | 0 | - | 4.68 | 103,811 |
| Geography of Germany | 0 | - | 4.35 | 17,076 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,736 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,745 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,905 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,059 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,541 |
