| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,284 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,018 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,068 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,580 |
| Famous Germans | 0 | - | 4.50 | 55,220 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,362 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,034 |
| Official European Union Languages | 0 | - | 4.97 | 238,230 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,681 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,676 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,127 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,288 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,570 |
| Famous Russians | 0 | - | 4.16 | 23,826 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,915 |
| Famous French People | 0 | - | 4.06 | 35,212 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,776 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,098 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,896 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,051 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,305 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,908 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,870 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,369 |
| Celtic Nations | 0 | - | 4.69 | 46,914 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,517 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,715 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,440 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,160 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,209 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,241 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,297 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,615 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,514 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,840 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,206 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,422 |
| Famous Irish People | 0 | - | 4.05 | 45,984 |
| Champions League Winners | 0 | - | 4.92 | 1,004,701 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,243 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,966 |
| Countries That Border Russia | 0 | - | 4.98 | 461,263 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,356 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,984 |
| States of Germany | 0 | - | 4.96 | 152,088 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,927 |
| Regions of Italy | 0 | - | 4.92 | 75,662 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,984 |
| Famous Nordic People | 0 | - | 4.34 | 20,078 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,727 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,088 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,601 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,667 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,429 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,318 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,642 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,811 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,462 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,295 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,949 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,556 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,789 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,054 |
| European Geography A-Z | 0 | - | 4.29 | 49,216 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,422 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,777 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,453 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,808 |
| Russia Country Quiz | 0 | - | 4.85 | 114,332 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,263 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,310 |
| Departments of France | 0 | - | 4.93 | 53,902 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,528 |
| History of The Netherlands | 0 | - | 4.46 | 17,418 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,717 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| England or Wales? | 0 | - | 4.94 | 45,623 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,994 |
| Famous Australians by Description | 0 | - | 4.23 | 27,893 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,549 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,640 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,454 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,371 |
| Slavic Languages | 0 | - | 4.68 | 54,293 |
| Countries that Border Poland | 0 | - | 4.99 | 172,120 |
| Russian History A-Z | 0 | - | 4.38 | 31,627 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,754 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,504 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,818 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,757 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,734 |
| France A-Z | 0 | - | 4.16 | 38,183 |
| The Trojan War | 0 | - | 4.83 | 39,668 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,432 |
| Name that Greek Letter | 0 | - | 4.93 | 323,185 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,613 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,586 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,444 |
| Roman Emperors | 0 | - | 4.95 | 119,725 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,431 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Africa A-Z | 0 | - | 4.57 | 46,577 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,916 |
| History of Russia Quiz | 0 | - | 4.49 | 31,890 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,708 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,314 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,123 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,879 |
| History of Italy | 0 | - | 4.55 | 31,949 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,681 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,632 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,181 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,519 |
| People on Money - England | 0 | - | 4.29 | 16,607 |
| London A-Z | 0 | - | 4.10 | 40,749 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,454 |
| Famous Chinese People | 0 | - | 4.09 | 11,869 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,958 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,939 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,104 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,347 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,227 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,888 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,178 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,198 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,978 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,931 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Regions of France | 0 | - | 4.75 | 120,523 |
| France Immigration by Country | 0 | - | 4.70 | 76,435 |
| German Groups of Things | 0 | - | 4.46 | 38,451 |
| Capitals of German States | 0 | - | 4.74 | 28,936 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,297 |
| Germany True or False? | 0 | - | 4.61 | 48,753 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,911 |
| Ancient Greek Words | 0 | - | 4.93 | 111,421 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,032 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,258 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,239 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,113 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,625 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,827 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,512 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,085 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,643 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,374 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,836 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,316 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,794 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,968 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,784 |
| Middle East A-Z | 0 | - | 4.47 | 45,982 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,512 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,461 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,003 |
| Australian Capitals | 0 | - | 4.92 | 62,705 |
| Canada A-Z | 0 | - | 4.73 | 32,787 |
| European Physical Geography | 0 | - | 4.26 | 33,482 |
| Albania Country Quiz | 0 | - | 4.54 | 38,944 |
| Geography of Russia | 0 | - | 4.57 | 21,515 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,149 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,920 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,642 |
| Romania Country Quiz | 0 | - | 4.63 | 53,715 |
| History of Austria | 0 | - | 4.70 | 17,843 |
| Geography of the French Empire | 0 | - | 4.45 | 27,034 |
| The French Revolution | 0 | - | 4.46 | 23,915 |
| France Multiple Choice | 0 | - | 4.39 | 40,719 |
| History of France | 0 | - | 4.59 | 56,880 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,465 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,556 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,497 |
| The Vikings! | 0 | - | 4.46 | 28,327 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,066 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| American to British Word Translation | 0 | - | 4.14 | 138,832 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,870 |
| Champions League Top 4 | 0 | - | 4.77 | 135,993 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,091 |
| Asia Map Quiz | 0 | - | 4.99 | 915,106 |
| A Quiz About Islam | 0 | - | 4.31 | 48,405 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,779 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,930 |
| Countries of Africa | 0 | - | 5.00 | 2,531,758 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,674 |
| African East Coast | 0 | - | 4.96 | 95,884 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,691 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,526 |
| Australia Map Quiz | 0 | - | 4.95 | 343,947 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,336 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,812 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,434 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,829 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,407 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,407 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,868 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,596 |
