| European Countries by First 2 Letters | 0 | - | 4.95 | 526,550 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,765 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,587 |
| England or Wales? | 0 | - | 4.94 | 45,357 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,623 |
| Official European Union Languages | 0 | - | 4.97 | 237,034 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,755 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,473 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,797 |
| Slavic Languages | 0 | - | 4.67 | 54,012 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,565 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,583 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,250 |
| Celtic Nations | 0 | - | 4.69 | 46,824 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,908 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,007 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,114 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,060 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,360 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,096 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,386 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,281 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,333 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,885 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,189 |
| States of Germany | 0 | - | 4.96 | 150,234 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,087 |
| Regions of Italy | 0 | - | 4.92 | 74,809 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,882 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,448 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,286 |
| Champions League Winners | 0 | - | 4.92 | 997,116 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,178 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,565 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,543 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,713 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,379 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,305 |
| Austria... or Australia? | 0 | - | 4.68 | 103,908 |
| Departments of France | 0 | - | 4.93 | 52,907 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,383 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,607 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,458 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,607 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,034 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,192 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,874 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,532 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,353 |
| Name that Greek Letter | 0 | - | 4.94 | 321,797 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,443 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,264 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,648 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,593 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 48,931 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,203 |
| History of Russia Quiz | 0 | - | 4.49 | 31,801 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,640 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,505 |
| The Trojan War | 0 | - | 4.83 | 39,458 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,656 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,431 |
| History of Italy | 0 | - | 4.55 | 31,835 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,217 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,093 |
| Roman Emperors | 0 | - | 4.95 | 118,576 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,993 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,219 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,447 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,946 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,894 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,753 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,264 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,974 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,710 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,664 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,050 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,353 |
| Europe Map Quiz | 0 | - | 5.00 | 4,733,483 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,013 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,644 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,966 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,007 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,627 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,184 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,641 |
| Capitals of French Regions | 0 | - | 4.45 | 15,989 |
| Regions of France | 0 | - | 4.78 | 119,361 |
| France Immigration by Country | 0 | - | 4.72 | 76,000 |
| Famous Germans | 0 | - | 4.50 | 54,653 |
| German Groups of Things | 0 | - | 4.46 | 38,315 |
| Capitals of German States | 0 | - | 4.74 | 28,818 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,111 |
| Germany True or False? | 0 | - | 4.61 | 48,551 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,506 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,670 |
| Ancient Greek Words | 0 | - | 4.92 | 110,765 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,589 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,858 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,073 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,036 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,282 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,418 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,243 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,414 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,276 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,819 |
| Australian Capitals | 0 | - | 4.92 | 62,597 |
| European Physical Geography | 0 | - | 4.26 | 33,381 |
| Geography of Russia | 0 | - | 4.57 | 21,434 |
| History of Austria | 0 | - | 4.70 | 17,764 |
| Geography of the French Empire | 0 | - | 4.48 | 26,943 |
| The French Revolution | 0 | - | 4.46 | 23,794 |
| France Multiple Choice | 0 | - | 4.38 | 40,643 |
| History of France | 0 | - | 4.59 | 56,155 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,390 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,786 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,653 |
| The Vikings! | 0 | - | 4.46 | 28,251 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,724 |
| The Portuguese Empire | 0 | - | 4.54 | 11,997 |
| American to British Word Translation | 0 | - | 4.10 | 133,795 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,730 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,258 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,069 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,201 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,405 |
| Champions League Top 4 | 0 | - | 4.77 | 133,992 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,455 |
| Asia Map Quiz | 0 | - | 4.99 | 907,610 |
| Countries of Africa | 0 | - | 5.00 | 2,509,860 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,873 |
| African East Coast | 0 | - | 4.96 | 95,118 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,000 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,867 |
| Australia Map Quiz | 0 | - | 4.94 | 342,631 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,977 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,277 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,245 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,149 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,476 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,260 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,698 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,932 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,316 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,523 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,195 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,949 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,321 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,419 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,536 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,689 |
| European Geography A-Z | 0 | - | 4.28 | 49,020 |
| Country Codes of Europe | 0 | - | 3.46 | 13,657 |
| The Only European Country ... | 0 | - | 4.91 | 214,046 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,690 |
| Presidents of France | 0 | - | 4.25 | 23,913 |
| Word Chain - France | 0 | - | 4.38 | 42,589 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,795 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,778 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,110 |
| Italian Foods | 0 | - | 4.31 | 72,233 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,997 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| History of The Netherlands | 0 | - | 4.46 | 17,324 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,963 |
| Canary Islands | 0 | - | 4.61 | 17,411 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,257 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,193 |
| British Spellings | 0 | - | 4.07 | 99,262 |
| British Groups of Things | 0 | - | 4.25 | 82,704 |
| British Acronyms | 0 | - | 4.39 | 45,634 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,954 |
| British Monopoly Board | 0 | - | 4.52 | 41,042 |
| Geography of Scotland | 0 | - | 4.63 | 21,492 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,547 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,521 |
| Astronomy True or False | 0 | - | 4.38 | 36,282 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,466 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,905 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,706 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,633 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,344 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,540 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,229 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,561 |
| African Island Countries | 0 | - | 4.96 | 100,848 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,768 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,758 |
| Australian States and Territories | 0 | - | 4.96 | 140,977 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,034 |
| Australia True or False | 0 | - | 4.87 | 56,533 |
| Flags of North and South America | 0 | - | 4.99 | 367,809 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,178 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,211 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,319 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,675 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,606 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,575 |
