| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,296 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,081 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,081 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,629 |
| Famous Germans | 0 | - | 4.50 | 55,227 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,375 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,043 |
| Official European Union Languages | 0 | - | 4.97 | 238,257 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,693 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,744 |
| Countries that Border Poland | 0 | - | 4.99 | 172,135 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,571 |
| Famous Russians | 0 | - | 4.16 | 23,828 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,924 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,327 |
| Famous French People | 0 | - | 4.06 | 35,254 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,783 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,126 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,979 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,618 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,052 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,310 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,915 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,005 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,371 |
| Celtic Nations | 0 | - | 4.69 | 46,915 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,573 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,729 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,452 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,168 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,219 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,263 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,307 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,621 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,524 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,845 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,211 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,430 |
| Famous Irish People | 0 | - | 4.05 | 45,988 |
| Champions League Winners | 0 | - | 4.92 | 1,005,038 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,264 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,994 |
| Countries That Border Russia | 0 | - | 4.98 | 461,319 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,651 |
| States of Germany | 0 | - | 4.96 | 152,127 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,935 |
| Regions of Italy | 0 | - | 4.92 | 75,682 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,997 |
| Famous Nordic People | 0 | - | 4.34 | 20,080 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,749 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,096 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,604 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,670 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,430 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,324 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,649 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,818 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,467 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,303 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,954 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,563 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,795 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,059 |
| European Geography A-Z | 0 | - | 4.29 | 49,221 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,433 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,823 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,471 |
| Russia Country Quiz | 0 | - | 4.85 | 114,349 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,275 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,312 |
| Departments of France | 0 | - | 4.93 | 53,931 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,528 |
| History of The Netherlands | 0 | - | 4.46 | 17,421 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,719 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| England or Wales? | 0 | - | 4.94 | 45,627 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,037 |
| Famous Australians by Description | 0 | - | 4.23 | 27,894 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,647 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,569 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,664 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,463 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,378 |
| Slavic Languages | 0 | - | 4.68 | 54,299 |
| Poland Country Quiz | 0 | - | 4.22 | 63,210 |
| Russian History A-Z | 0 | - | 4.38 | 31,635 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,762 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,511 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,133 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,822 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,758 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,306 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,736 |
| France A-Z | 0 | - | 4.16 | 38,184 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,530 |
| Name that Greek Letter | 0 | - | 4.93 | 323,224 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,639 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,586 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,452 |
| Roman Emperors | 0 | - | 4.95 | 119,747 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,433 |
| Switzerland A-Z | 0 | - | 4.45 | 25,626 |
| Africa A-Z | 0 | - | 4.57 | 46,582 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,927 |
| History of Russia Quiz | 0 | - | 4.49 | 31,897 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,708 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,123 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,049 |
| History of Italy | 0 | - | 4.55 | 31,953 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,695 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,633 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,184 |
| 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 | 35,476 |
| Famous Chinese People | 0 | - | 4.09 | 11,870 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,984 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,939 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,116 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,906 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,230 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,893 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,184 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,201 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,982 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,937 |
| Capitals of French Regions | 0 | - | 4.45 | 16,051 |
| Regions of France | 0 | - | 4.75 | 120,544 |
| France Immigration by Country | 0 | - | 4.70 | 76,441 |
| German Groups of Things | 0 | - | 4.46 | 38,453 |
| Capitals of German States | 0 | - | 4.74 | 28,938 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,301 |
| Germany True or False? | 0 | - | 4.61 | 48,760 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,924 |
| Ancient Greek Words | 0 | - | 4.93 | 111,436 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,041 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,264 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,241 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,126 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,626 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,856 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,532 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,088 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,647 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,377 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,843 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,319 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,824 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,970 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,794 |
| Middle East A-Z | 0 | - | 4.47 | 45,986 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,745 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,706 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,169 |
| Australian Capitals | 0 | - | 4.92 | 62,707 |
| Canada A-Z | 0 | - | 4.73 | 32,790 |
| European Physical Geography | 0 | - | 4.26 | 33,483 |
| Albania Country Quiz | 0 | - | 4.54 | 38,947 |
| Geography of Russia | 0 | - | 4.57 | 21,516 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,159 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,922 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,363 |
| Romania Country Quiz | 0 | - | 4.63 | 53,720 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,986 |
| History of Austria | 0 | - | 4.70 | 17,847 |
| Geography of the French Empire | 0 | - | 4.45 | 27,038 |
| The French Revolution | 0 | - | 4.46 | 23,917 |
| France Multiple Choice | 0 | - | 4.39 | 40,721 |
| History of France | 0 | - | 4.59 | 56,893 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,466 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,587 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,550 |
| The Vikings! | 0 | - | 4.46 | 28,332 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,074 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| American to British Word Translation | 0 | - | 4.14 | 138,844 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,871 |
| Champions League Top 4 | 0 | - | 4.77 | 136,042 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,338 |
| Asia Map Quiz | 0 | - | 4.99 | 915,313 |
| A Quiz About Islam | 0 | - | 4.31 | 48,407 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,789 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,954 |
| Countries of Africa | 0 | - | 5.00 | 2,532,230 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,699 |
| African East Coast | 0 | - | 4.96 | 95,908 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,727 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,550 |
| Australia Map Quiz | 0 | - | 4.95 | 344,078 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,343 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,822 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,439 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,096 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,535 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,408 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,907 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,602 |
