| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,830 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,263 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,313 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,207 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,751 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,922 |
| Famous Germans | 0 | - | 4.50 | 54,601 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,359 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,569 |
| Official European Union Languages | 0 | - | 4.97 | 236,476 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,680 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,097 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,677 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,719 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,442 |
| Famous Russians | 0 | - | 4.16 | 23,724 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,526 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,556 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,768 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,803 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,551 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,961 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,040 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,732 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,237 |
| Celtic Nations | 0 | - | 4.69 | 46,807 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,371 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,874 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,808 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,680 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,196 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,854 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,651 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,610 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,010 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,283 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,578 |
| Famous Irish People | 0 | - | 4.05 | 45,854 |
| Champions League Winners | 0 | - | 4.92 | 996,041 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,287 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,191 |
| Countries That Border Russia | 0 | - | 4.98 | 458,825 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,014 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,758 |
| Famous French People | 0 | - | 4.12 | 27,928 |
| States of Germany | 0 | - | 4.96 | 149,984 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,994 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Regions of Italy | 0 | - | 4.92 | 74,675 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,786 |
| Famous Nordic People | 0 | - | 4.34 | 19,848 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,284 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,125 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,204 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,402 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,983 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,188 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,473 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,877 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,252 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,468 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,142 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,905 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,286 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,496 |
| European Geography A-Z | 0 | - | 4.28 | 48,987 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,130 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,450 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,152 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,113 |
| Russia Country Quiz | 0 | - | 4.85 | 113,618 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,834 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,025 |
| Departments of France | 0 | - | 4.93 | 52,771 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,357 |
| History of The Netherlands | 0 | - | 4.46 | 17,306 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,435 |
| Famous Australians by Description | 0 | - | 4.23 | 27,564 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,971 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,983 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,106 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,778 |
| Slavic Languages | 0 | - | 4.67 | 53,965 |
| Countries that Border Poland | 0 | - | 4.99 | 171,315 |
| Russian History A-Z | 0 | - | 4.38 | 30,742 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,362 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,865 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,603 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,533 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| France A-Z | 0 | - | 4.16 | 38,054 |
| The Trojan War | 0 | - | 4.83 | 39,422 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,729 |
| Name that Greek Letter | 0 | - | 4.94 | 321,605 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,500 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,427 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,034 |
| Roman Emperors | 0 | - | 4.95 | 118,427 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,241 |
| Switzerland A-Z | 0 | - | 4.45 | 25,502 |
| Africa A-Z | 0 | - | 4.57 | 46,361 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,099 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,559 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,888 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,837 |
| History of Italy | 0 | - | 4.55 | 31,811 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,144 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,976 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,458 |
| People on Money - England | 0 | - | 4.29 | 16,561 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,317 |
| London A-Z | 0 | - | 4.10 | 40,633 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,089 |
| Famous Chinese People | 0 | - | 4.09 | 11,798 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,484 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,906 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,721 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,287 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,980 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,606 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,935 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,970 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,789 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,551 |
| Capitals of French Regions | 0 | - | 4.45 | 15,982 |
| Regions of France | 0 | - | 4.78 | 119,182 |
| France Immigration by Country | 0 | - | 4.72 | 75,950 |
| German Groups of Things | 0 | - | 4.46 | 38,302 |
| Capitals of German States | 0 | - | 4.74 | 28,810 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| Germany True or False? | 0 | - | 4.61 | 48,524 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,452 |
| Ancient Greek Words | 0 | - | 4.92 | 110,652 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,608 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,767 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,040 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,930 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,390 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,010 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,293 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,821 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,383 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,152 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,556 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,063 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,074 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,702 |
| Middle East A-Z | 0 | - | 4.47 | 45,778 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,488 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,882 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,122 |
| Australian Capitals | 0 | - | 4.92 | 62,592 |
| Canada A-Z | 0 | - | 4.73 | 32,644 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Albania Country Quiz | 0 | - | 4.54 | 38,632 |
| Geography of Russia | 0 | - | 4.57 | 21,424 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,845 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,767 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,301 |
| Romania Country Quiz | 0 | - | 4.63 | 53,332 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,776 |
| France Multiple Choice | 0 | - | 4.38 | 40,631 |
| History of France | 0 | - | 4.59 | 55,993 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,881 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,430 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,683 |
| The Portuguese Empire | 0 | - | 4.54 | 11,988 |
| American to British Word Translation | 0 | - | 4.06 | 117,045 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| Champions League Top 4 | 0 | - | 4.77 | 133,729 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,477 |
| Asia Map Quiz | 0 | - | 4.99 | 906,768 |
| A Quiz About Islam | 0 | - | 4.31 | 48,196 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,426 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,762 |
| Countries of Africa | 0 | - | 5.00 | 2,506,925 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,790 |
| African East Coast | 0 | - | 4.96 | 95,014 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,899 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,774 |
| Australia Map Quiz | 0 | - | 4.94 | 342,423 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,527 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,072 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,088 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,271 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,059 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,359 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,066 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,187 |
