| European Countries by First 2 Letters | 0 | - | 4.95 | 526,426 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,592 |
| Official European Union Languages | 0 | - | 4.97 | 236,749 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,715 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,275 |
| Celtic Nations | 0 | - | 4.69 | 46,818 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,547 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,573 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,244 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,867 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,888 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,985 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,054 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,156 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,071 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,537 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,462 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,565 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,347 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,240 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,287 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,820 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,042 |
| States of Germany | 0 | - | 4.96 | 150,128 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,044 |
| Regions of Italy | 0 | - | 4.92 | 74,746 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,832 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,388 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,218 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,130 |
| Champions League Winners | 0 | - | 4.92 | 996,632 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,453 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,602 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,005 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,091 |
| Slavic Languages | 0 | - | 4.67 | 53,992 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,434 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,255 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,600 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,264 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,214 |
| Departments of France | 0 | - | 4.93 | 52,853 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,377 |
| England or Wales? | 0 | - | 4.94 | 45,329 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,537 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,109 |
| Country Codes of Europe | 0 | - | 3.46 | 13,655 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,156 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,850 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,573 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,522 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Capitals of German States | 0 | - | 4.74 | 28,815 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,102 |
| History of Italy | 0 | - | 4.55 | 31,820 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,181 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,487 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,655 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,461 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,422 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,923 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,871 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,730 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,236 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,925 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,687 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,641 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,032 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,322 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,000 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,628 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,955 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,992 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,609 |
| Regions of France | 0 | - | 4.78 | 119,294 |
| France Immigration by Country | 0 | - | 4.72 | 75,979 |
| Famous Germans | 0 | - | 4.50 | 54,629 |
| German Groups of Things | 0 | - | 4.46 | 38,308 |
| Germany True or False? | 0 | - | 4.61 | 48,537 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,474 |
| The Trojan War | 0 | - | 4.83 | 39,442 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,042 |
| Name that Greek Letter | 0 | - | 4.94 | 321,719 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,574 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,541 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,062 |
| Roman Emperors | 0 | - | 4.95 | 118,513 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,840 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,055 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,985 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,803 |
| Asia Map Quiz | 0 | - | 4.99 | 907,213 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,835 |
| African East Coast | 0 | - | 4.96 | 95,072 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,951 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,817 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,187 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,221 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,054 |
| European Physical Geography | 0 | - | 4.26 | 33,375 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,612 |
| The Only European Country ... | 0 | - | 4.91 | 213,915 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,587 |
| Geography of Russia | 0 | - | 4.57 | 21,428 |
| History of Austria | 0 | - | 4.70 | 17,756 |
| Presidents of France | 0 | - | 4.25 | 23,907 |
| Geography of the French Empire | 0 | - | 4.48 | 26,940 |
| The French Revolution | 0 | - | 4.46 | 23,787 |
| France Multiple Choice | 0 | - | 4.38 | 40,637 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,388 |
| The Vikings! | 0 | - | 4.46 | 28,248 |
| The Portuguese Empire | 0 | - | 4.54 | 11,994 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,961 |
| American to British Word Translation | 0 | - | 4.06 | 125,075 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,713 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,497 |
| Countries of Africa | 0 | - | 5.00 | 2,508,547 |
| Australia Map Quiz | 0 | - | 4.94 | 342,532 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,364 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,784 |
| History of France | 0 | - | 4.59 | 56,084 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,353 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,709 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,235 |
| Champions League Top 4 | 0 | - | 4.77 | 133,883 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,070 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,172 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,179 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,234 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,676 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,915 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,296 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,503 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,181 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,934 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,302 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,406 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,521 |
| European Geography A-Z | 0 | - | 4.28 | 49,008 |
| Word Chain - France | 0 | - | 4.38 | 42,585 |
| Ancient Greek Words | 0 | - | 4.92 | 110,720 |
| Italian Foods | 0 | - | 4.31 | 72,212 |
| The Mafia Quiz | 0 | - | 4.46 | 23,210 |
| History of The Netherlands | 0 | - | 4.46 | 17,316 |
| Canary Islands | 0 | - | 4.61 | 17,406 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,164 |
| British Spellings | 0 | - | 4.07 | 99,231 |
| British Groups of Things | 0 | - | 4.25 | 82,680 |
| British Acronyms | 0 | - | 4.39 | 45,622 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,951 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,400 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,153 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,371 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,443 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,568 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,648 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,598 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,298 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,515 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,149 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,493 |
| African Island Countries | 0 | - | 4.96 | 100,808 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,691 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,723 |
| Australian States and Territories | 0 | - | 4.96 | 140,926 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,024 |
| Australia Country Quiz | 0 | - | 4.43 | 69,290 |
| Australia True or False | 0 | - | 4.87 | 56,516 |
| Flags of North and South America | 0 | - | 4.99 | 367,429 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,164 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,182 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,258 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,370 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,969 |
| North America Map Quiz | 0 | - | 4.98 | 244,525 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,382 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,019 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,098 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,633 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,505 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,156 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,014 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,729 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,310 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,396 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,488 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,502 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,286 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,217 |
| Slavic Countries | 0 | - | 4.96 | 110,878 |
| Austria... or Australia? | 0 | - | 4.68 | 103,884 |
| Geography of Germany | 0 | - | 4.35 | 17,089 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,965 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,626 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,630 |
