| European Countries by First 2 Letters | 0 | - | 4.95 | 527,039 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,987 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,527 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,526 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,769 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,746 |
| Official European Union Languages | 0 | - | 4.97 | 237,329 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,133 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,941 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,485 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,837 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,646 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,625 |
| Monarchies of the World | 0 | - | 4.94 | 167,073 |
| History of Russia Quiz | 0 | - | 4.49 | 31,820 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,267 |
| Celtic Nations | 0 | - | 4.69 | 46,846 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,589 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,053 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,018 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,899 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,370 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,159 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,968 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,742 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,116 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,480 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,718 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,822 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,860 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,528 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,377 |
| Slavic Countries | 0 | - | 4.96 | 111,065 |
| Famous Germans | 0 | - | 4.50 | 54,747 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,131 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,664 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,739 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,408 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,030 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,589 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,425 |
| Famous Russians | 0 | - | 4.16 | 23,753 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,368 |
| States of Germany | 0 | - | 4.96 | 150,680 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,217 |
| Regions of Italy | 0 | - | 4.92 | 74,990 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,993 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,828 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,541 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,485 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,442 |
| Champions League Winners | 0 | - | 4.92 | 998,786 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,121 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,231 |
| Geography of Russia | 0 | - | 4.57 | 21,454 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,141 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,355 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,583 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,356 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,792 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,031 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,650 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,615 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,302 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,030 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,371 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,594 |
| European Geography A-Z | 0 | - | 4.28 | 49,063 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,165 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,736 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,650 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,985 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,124 |
| Departments of France | 0 | - | 4.93 | 53,074 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,409 |
| History of The Netherlands | 0 | - | 4.46 | 17,347 |
| England or Wales? | 0 | - | 4.94 | 45,422 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,889 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,614 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,136 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,512 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,239 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,008 |
| Slavic Languages | 0 | - | 4.68 | 54,084 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,476 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,683 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,614 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,573 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,573 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,984 |
| France A-Z | 0 | - | 4.16 | 38,094 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,468 |
| Name that Greek Letter | 0 | - | 4.94 | 322,144 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,489 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,296 |
| Switzerland A-Z | 0 | - | 4.45 | 25,545 |
| Africa A-Z | 0 | - | 4.57 | 46,438 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,885 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,401 |
| Word Chain - Russia | 0 | - | 4.33 | 15,703 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,611 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,046 |
| Famous French People | 0 | - | 4.12 | 28,083 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,044 |
| The Trojan War | 0 | - | 4.83 | 39,504 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,916 |
| Famous Irish People | 0 | - | 4.05 | 45,887 |
| History of Italy | 0 | - | 4.55 | 31,866 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,334 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,181 |
| Roman Emperors | 0 | - | 4.95 | 118,843 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,524 |
| Famous Nordic People | 0 | - | 4.34 | 19,930 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,557 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,043 |
| People on Money - England | 0 | - | 4.29 | 16,578 |
| London A-Z | 0 | - | 4.10 | 40,675 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,901 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,832 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,859 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,617 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,061 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,702 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,016 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,056 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,859 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,670 |
| Capitals of French Regions | 0 | - | 4.45 | 16,008 |
| Regions of France | 0 | - | 4.78 | 119,648 |
| France Immigration by Country | 0 | - | 4.72 | 76,085 |
| German Groups of Things | 0 | - | 4.46 | 38,350 |
| Capitals of German States | 0 | - | 4.74 | 28,869 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,155 |
| Germany True or False? | 0 | - | 4.61 | 48,607 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,624 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,523 |
| Ancient Greek Words | 0 | - | 4.93 | 110,945 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,950 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,107 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,202 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,632 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,650 |
| Famous Scottish People | 0 | - | 4.22 | 18,343 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,898 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,472 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,225 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,648 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,145 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,787 |
| Middle East A-Z | 0 | - | 4.47 | 45,869 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,307,914 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,763 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,055 |
| Australian Capitals | 0 | - | 4.92 | 62,617 |
| Canada A-Z | 0 | - | 4.73 | 32,696 |
| European Physical Geography | 0 | - | 4.26 | 33,402 |
| Russian History A-Z | 0 | - | 4.38 | 31,263 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,953 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,820 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,426 |
| Romania Country Quiz | 0 | - | 4.63 | 53,495 |
| History of Austria | 0 | - | 4.70 | 17,780 |
| Geography of the French Empire | 0 | - | 4.45 | 26,969 |
| The French Revolution | 0 | - | 4.46 | 23,834 |
| France Multiple Choice | 0 | - | 4.38 | 40,662 |
| History of France | 0 | - | 4.59 | 56,409 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,410 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,516 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,737 |
| The Vikings! | 0 | - | 4.46 | 28,269 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,765 |
| The Portuguese Empire | 0 | - | 4.58 | 12,008 |
| American to British Word Translation | 0 | - | 4.13 | 137,443 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,775 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,428 |
| Champions League Top 4 | 0 | - | 4.77 | 134,431 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,721 |
| Asia Map Quiz | 0 | - | 4.99 | 909,053 |
| A Quiz About Islam | 0 | - | 4.31 | 48,267 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,547 |
| Popular Royal Names | 0 | - | 4.27 | 124,623 |
| Queen in the Answers | 0 | - | 4.29 | 52,624 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,128 |
| Countries of Africa | 0 | - | 5.00 | 2,515,207 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,055 |
| African East Coast | 0 | - | 4.96 | 95,312 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,195 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,050 |
| Australia Map Quiz | 0 | - | 4.94 | 342,922 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,908 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,396 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,154 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,572 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 744,248 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,666 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,385 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,544 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,832 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,460 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,003 |
