| European Countries by First 2 Letters | 0 | - | 4.95 | 526,665 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,660 |
| Official European Union Languages | 0 | - | 4.97 | 237,111 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,946 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,556 |
| Celtic Nations | 0 | - | 4.69 | 46,834 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,578 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,594 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,254 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,929 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,096 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,315 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,075 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,190 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,575 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,589 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,559 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,701 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,439 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,310 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,387 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,925 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,379 |
| States of Germany | 0 | - | 4.96 | 150,365 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,126 |
| Regions of Italy | 0 | - | 4.92 | 74,856 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,912 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,507 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,406 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,284 |
| Champions League Winners | 0 | - | 4.92 | 997,482 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,467 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,609 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,056 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,263 |
| Slavic Languages | 0 | - | 4.67 | 54,028 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,448 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,269 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,802 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,448 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,378 |
| Departments of France | 0 | - | 4.93 | 52,954 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,390 |
| England or Wales? | 0 | - | 4.94 | 45,375 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,681 |
| Australian Capitals | 0 | - | 4.92 | 62,601 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,850 |
| Country Codes of Europe | 0 | - | 3.46 | 13,658 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,241 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,900 |
| History of Russia Quiz | 0 | - | 4.49 | 31,803 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,589 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| Capitals of French Regions | 0 | - | 4.45 | 15,994 |
| Capitals of German States | 0 | - | 4.74 | 28,821 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,115 |
| History of Italy | 0 | - | 4.55 | 31,845 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,244 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,498 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,009 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,812 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,122 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,473 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,966 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,921 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,774 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,282 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,017 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,730 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,682 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,062 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,381 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,023 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,655 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,980 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,017 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,644 |
| Regions of France | 0 | - | 4.78 | 119,437 |
| France Immigration by Country | 0 | - | 4.72 | 76,025 |
| Famous Germans | 0 | - | 4.50 | 54,672 |
| German Groups of Things | 0 | - | 4.46 | 38,323 |
| Germany True or False? | 0 | - | 4.61 | 48,559 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,532 |
| The Trojan War | 0 | - | 4.83 | 39,470 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,674 |
| Name that Greek Letter | 0 | - | 4.94 | 321,877 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,718 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,621 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,116 |
| Roman Emperors | 0 | - | 4.95 | 118,620 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,880 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,083 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,065 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,895 |
| Asia Map Quiz | 0 | - | 4.99 | 907,960 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,912 |
| African East Coast | 0 | - | 4.96 | 95,162 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,033 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,916 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,368 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,319 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,252 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,752 |
| The Only European Country ... | 0 | - | 4.91 | 214,153 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,763 |
| Geography of Russia | 0 | - | 4.57 | 21,440 |
| History of Austria | 0 | - | 4.70 | 17,768 |
| Presidents of France | 0 | - | 4.25 | 23,926 |
| Geography of the French Empire | 0 | - | 4.45 | 26,951 |
| The French Revolution | 0 | - | 4.46 | 23,805 |
| France Multiple Choice | 0 | - | 4.38 | 40,648 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,397 |
| The Vikings! | 0 | - | 4.46 | 28,254 |
| The Portuguese Empire | 0 | - | 4.54 | 12,001 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,968 |
| American to British Word Translation | 0 | - | 4.11 | 135,662 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,741 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,603 |
| Countries of Africa | 0 | - | 5.00 | 2,511,141 |
| Australia Map Quiz | 0 | - | 4.94 | 342,700 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,568 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,801 |
| History of France | 0 | - | 4.59 | 56,213 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,906 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,732 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,284 |
| Champions League Top 4 | 0 | - | 4.77 | 134,095 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,771 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,203 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,620 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,276 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,711 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,944 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,334 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,539 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,204 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,961 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,332 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,432 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,547 |
| European Geography A-Z | 0 | - | 4.28 | 49,032 |
| Word Chain - France | 0 | - | 4.38 | 42,603 |
| Ancient Greek Words | 0 | - | 4.92 | 110,809 |
| Italian Foods | 0 | - | 4.31 | 72,262 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| History of The Netherlands | 0 | - | 4.46 | 17,330 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,215 |
| British Spellings | 0 | - | 4.07 | 99,276 |
| British Groups of Things | 0 | - | 4.25 | 82,711 |
| British Acronyms | 0 | - | 4.39 | 45,643 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,966 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,411 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,322 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,454 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,479 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,260 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,769 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,655 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,385 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,579 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,297 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,664 |
| African Island Countries | 0 | - | 4.96 | 100,885 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,865 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,786 |
| Australian States and Territories | 0 | - | 4.96 | 141,011 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,043 |
| Australia Country Quiz | 0 | - | 4.43 | 69,332 |
| Australia True or False | 0 | - | 4.87 | 56,547 |
| Flags of North and South America | 0 | - | 4.99 | 368,128 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,203 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,251 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,366 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,994 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,181 |
| North America Map Quiz | 0 | - | 4.98 | 244,916 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,413 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,428 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,446 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,699 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,547 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,751 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,858 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,811 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,403 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,606 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,563 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,765 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,383 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,290 |
| Slavic Countries | 0 | - | 4.96 | 110,956 |
| Austria... or Australia? | 0 | - | 4.68 | 103,932 |
| Geography of Germany | 0 | - | 4.35 | 17,100 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,791 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,017 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,982 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,665 |
