| European Countries by First 2 Letters | 0 | - | 4.95 | 529,655 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,389 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,652 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,387 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,152 |
| Official European Union Languages | 0 | - | 4.97 | 238,561 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,894 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,291 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,607 |
| Countries that Border Poland | 0 | - | 4.99 | 172,304 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,999 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,850 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,824 |
| Monarchies of the World | 0 | - | 4.94 | 168,751 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,388 |
| Celtic Nations | 0 | - | 4.69 | 46,953 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,359 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,463 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,082 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,713 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,585 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,736 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,603 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,902 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,752 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,050 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,495 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,652 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,612 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 171,981 |
| Famous Germans | 0 | - | 4.50 | 55,306 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,365 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,023 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,519 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,172 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,257 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,491 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,160 |
| Famous Russians | 0 | - | 4.16 | 23,842 |
| Russian History A-Z | 0 | - | 4.38 | 31,737 |
| States of Germany | 0 | - | 4.96 | 152,668 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,063 |
| Regions of Italy | 0 | - | 4.92 | 75,920 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,197 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,993 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,231 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,533 |
| Champions League Winners | 0 | - | 4.92 | 1,007,085 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,529 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,502 |
| Countries That Border Russia | 0 | - | 4.98 | 461,820 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,047 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,707 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,833 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,992 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,118 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,786 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,593 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,231 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,783 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,962 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,235 |
| European Geography A-Z | 0 | - | 4.29 | 49,277 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,341 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,885 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,170 |
| Russia Country Quiz | 0 | - | 4.83 | 114,513 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,358 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,352 |
| Famous French People | 0 | - | 4.06 | 35,610 |
| Departments of France | 0 | - | 4.93 | 54,165 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,553 |
| History of The Netherlands | 0 | - | 4.46 | 17,437 |
| England or Wales? | 0 | - | 4.94 | 45,705 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,414 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,659 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,718 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,016 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,524 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,472 |
| Slavic Languages | 0 | - | 4.68 | 54,378 |
| Poland Country Quiz | 0 | - | 4.20 | 63,290 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,864 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,243 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,881 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,816 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,419 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,778 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,628 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,065 |
| France A-Z | 0 | - | 4.16 | 38,210 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,612 |
| Name that Greek Letter | 0 | - | 4.93 | 323,496 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,624 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,475 |
| Switzerland A-Z | 0 | - | 4.45 | 25,648 |
| Africa A-Z | 0 | - | 4.57 | 46,610 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,249 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,116 |
| History of Russia Quiz | 0 | - | 4.47 | 31,921 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,737 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,833 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,421 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,148 |
| The Trojan War | 0 | - | 4.83 | 39,735 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,880 |
| Famous Irish People | 0 | - | 4.05 | 45,997 |
| History of Italy | 0 | - | 4.55 | 31,980 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,800 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,545 |
| Roman Emperors | 0 | - | 4.95 | 120,084 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,664 |
| Famous Nordic People | 0 | - | 4.34 | 20,129 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,241 |
| People on Money - England | 0 | - | 4.29 | 16,614 |
| London A-Z | 0 | - | 4.10 | 40,778 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,594 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,196 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,198 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,925 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,284 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,952 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,233 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,240 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,016 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,025 |
| Capitals of French Regions | 0 | - | 4.45 | 16,081 |
| Regions of France | 0 | - | 4.72 | 120,833 |
| France Immigration by Country | 0 | - | 4.70 | 76,534 |
| German Groups of Things | 0 | - | 4.46 | 38,483 |
| Capitals of German States | 0 | - | 4.74 | 28,956 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,345 |
| Germany True or False? | 0 | - | 4.61 | 48,813 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,038 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,963 |
| Ancient Greek Words | 0 | - | 4.93 | 111,634 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,373 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,275 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,266 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,337 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,760 |
| Famous Scottish People | 0 | - | 4.22 | 18,396 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,145 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,712 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,422 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,924 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,380 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,043 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,896 |
| Middle East A-Z | 0 | - | 4.47 | 46,026 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,317,122 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,313 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,537 |
| Australian Capitals | 0 | - | 4.92 | 62,727 |
| Canada A-Z | 0 | - | 4.73 | 32,839 |
| European Physical Geography | 0 | - | 4.26 | 33,514 |
| Albania Country Quiz | 0 | - | 4.54 | 39,015 |
| Geography of Russia | 0 | - | 4.57 | 21,535 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,231 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,970 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,728 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,451 |
| Romania Country Quiz | 0 | - | 4.63 | 53,796 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,052 |
| History of Austria | 0 | - | 4.70 | 17,863 |
| Geography of the French Empire | 0 | - | 4.45 | 27,061 |
| The French Revolution | 0 | - | 4.47 | 23,943 |
| France Multiple Choice | 0 | - | 4.39 | 40,743 |
| History of France | 0 | - | 4.59 | 56,998 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,233 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,155 |
| The Vikings! | 0 | - | 4.46 | 28,345 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,138 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| American to British Word Translation | 0 | - | 4.14 | 139,092 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,903 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,670 |
| Champions League Top 4 | 0 | - | 4.77 | 136,553 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,376 |
| Asia Map Quiz | 0 | - | 4.99 | 917,091 |
| A Quiz About Islam | 0 | - | 4.31 | 48,448 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,858 |
| Popular Royal Names | 0 | - | 4.27 | 124,976 |
| Queen in the Answers | 0 | - | 4.29 | 52,921 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,270 |
| Countries of Africa | 0 | - | 5.00 | 2,537,927 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,853 |
| African East Coast | 0 | - | 4.96 | 96,094 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,911 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,729 |
| Australia Map Quiz | 0 | - | 4.95 | 344,665 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,430 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,875 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,465 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,879 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,248 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,333 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,661 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,100 |
