| European Countries by First 2 Letters | 0 | - | 4.95 | 532,507 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,024 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,895 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,797 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,982 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,482 |
| Famous Germans | 0 | - | 4.50 | 55,790 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,380 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,729 |
| Official European Union Languages | 0 | - | 4.97 | 239,798 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,651 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,876 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,742 |
| Famous Russians | 0 | - | 4.16 | 23,912 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,315 |
| Famous French People | 0 | - | 4.07 | 36,105 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,055 |
| History of Russia Quiz | 0 | - | 4.47 | 32,005 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,505 |
| Celtic Nations | 0 | - | 4.61 | 47,095 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,166 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,553 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,964 |
| European Geography By Letter - D | 0 | - | 4.48 | 117,235 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,072 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,523 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,129 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,606 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,049 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,600 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,441 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,756 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,761 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,182 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,792 |
| Slavic Countries | 0 | - | 4.96 | 112,368 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,671 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,144 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,694 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,449 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,691 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,823 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,765 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,478 |
| States of Germany | 0 | - | 4.95 | 154,493 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,690 |
| Famous Irish People | 0 | - | 4.05 | 46,064 |
| Regions of Italy | 0 | - | 4.92 | 77,083 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,799 |
| Famous Nordic People | 0 | - | 4.34 | 20,305 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,315 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,761 |
| Champions League Winners | 0 | - | 4.92 | 1,016,134 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,022 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,750 |
| Geography of Russia | 0 | - | 4.57 | 21,599 |
| Romania Country Quiz | 0 | - | 4.63 | 54,137 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,369 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,842 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,212 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,492 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,203 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,968 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,577 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,216 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,586 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,588 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,897 |
| European Geography A-Z | 0 | - | 4.29 | 49,484 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,865 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,921 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,921 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,744 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,590 |
| Departments of France | 0 | - | 4.93 | 55,160 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,740 |
| History of The Netherlands | 0 | - | 4.46 | 17,554 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,113 |
| Famous Scottish People | 0 | - | 4.22 | 18,439 |
| England or Wales? | 0 | - | 4.94 | 45,969 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,133 |
| Famous Australians by Description | 0 | - | 4.23 | 28,147 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,719 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,323 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,029 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,855 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,941 |
| Slavic Languages | 0 | - | 4.68 | 54,693 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,266 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,009 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,046 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,026 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,085 |
| France A-Z | 0 | - | 4.16 | 38,337 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,917 |
| Name that Greek Letter | 0 | - | 4.93 | 324,975 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,739 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,627 |
| Switzerland A-Z | 0 | - | 4.45 | 25,768 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,843 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,872 |
| Russian History A-Z | 0 | - | 4.35 | 32,220 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,813 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,239 |
| The Trojan War | 0 | - | 4.83 | 39,990 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,954 |
| History of Italy | 0 | - | 4.55 | 32,146 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,378 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,589 |
| Roman Emperors | 0 | - | 4.95 | 121,193 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,820 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,424 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,578 |
| People on Money - England | 0 | - | 4.29 | 16,645 |
| London A-Z | 0 | - | 4.10 | 40,877 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,994 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,679 |
| Famous Chinese People | 0 | - | 4.09 | 11,926 |
| Africa A-Z | 0 | - | 4.57 | 46,768 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,371 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,963 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,526 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,221 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,526 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,184 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,460 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,429 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,190 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,337 |
| Capitals of French Regions | 0 | - | 4.45 | 16,179 |
| Regions of France | 0 | - | 4.70 | 122,094 |
| France Immigration by Country | 0 | - | 4.70 | 76,935 |
| German Groups of Things | 0 | - | 4.47 | 38,636 |
| Capitals of German States | 0 | - | 4.74 | 29,072 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,543 |
| Germany True or False? | 0 | - | 4.61 | 49,021 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,467 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,747 |
| Ancient Greek Words | 0 | - | 4.93 | 112,458 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,755 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,406 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,827 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,314 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,801 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,466 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,080 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,668 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,210 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,666 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,319 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,311 |
| Middle East A-Z | 0 | - | 4.47 | 46,239 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,325,715 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,379 |
| Australian Capitals | 0 | - | 4.92 | 62,830 |
| Canada A-Z | 0 | - | 4.73 | 32,968 |
| European Physical Geography | 0 | - | 4.26 | 33,592 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,457 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,130 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,981 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,779 |
| History of Austria | 0 | - | 4.70 | 17,972 |
| Geography of the French Empire | 0 | - | 4.45 | 27,217 |
| The French Revolution | 0 | - | 4.47 | 24,147 |
| France Multiple Choice | 0 | - | 4.39 | 40,849 |
| History of France | 0 | - | 4.61 | 57,611 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,559 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,797 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,500 |
| The Vikings! | 0 | - | 4.46 | 28,406 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,387 |
| The Portuguese Empire | 0 | - | 4.58 | 12,106 |
| American to British Word Translation | 0 | - | 4.14 | 139,695 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,058 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,812 |
| Champions League Top 4 | 0 | - | 4.78 | 139,080 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,506 |
| Asia Map Quiz | 0 | - | 4.99 | 925,194 |
| A Quiz About Islam | 0 | - | 4.32 | 48,618 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,181 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,711 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,519 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,464 |
| Australia Map Quiz | 0 | - | 4.95 | 346,165 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 69,957 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 56,166 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,627 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,320 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,788 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,426 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,942 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,916 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,797 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,241 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,897 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,111 |
| Country Codes of Europe | 0 | - | 3.45 | 13,831 |
| The Only European Country ... | 0 | - | 4.91 | 219,010 |
