| European Countries by First 2 Letters | 0 | - | 4.95 | 526,689 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,931 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,449 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,401 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,417 |
| Famous Germans | 0 | - | 4.50 | 54,677 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,628 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,670 |
| Official European Union Languages | 0 | - | 4.97 | 237,135 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,006 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,593 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,469 |
| Famous Russians | 0 | - | 4.16 | 23,740 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,583 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,598 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,256 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,482 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,968 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,929 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,779 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,288 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,033 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,761 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,687 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,066 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,385 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,650 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,134 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,410 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,390 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,309 |
| Slavic Countries | 0 | - | 4.96 | 110,965 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,560 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,971 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,079 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,627 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,470 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,320 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,286 |
| Famous French People | 0 | - | 4.12 | 28,012 |
| States of Germany | 0 | - | 4.96 | 150,387 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,128 |
| Famous Irish People | 0 | - | 4.05 | 45,871 |
| Regions of Italy | 0 | - | 4.92 | 74,873 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,918 |
| Famous Nordic People | 0 | - | 4.34 | 19,892 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,550 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,520 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,423 |
| Champions League Winners | 0 | - | 4.92 | 997,560 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,075 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,192 |
| Geography of Russia | 0 | - | 4.57 | 21,441 |
| Romania Country Quiz | 0 | - | 4.63 | 53,424 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,596 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,293 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,563 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,281 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,716 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,952 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,338 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,544 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,208 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,966 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,334 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,549 |
| European Geography A-Z | 0 | - | 4.28 | 49,037 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,829 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,465 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,388 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,933 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,091 |
| Departments of France | 0 | - | 4.93 | 52,965 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,393 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| Famous Scottish People | 0 | - | 4.22 | 18,336 |
| England or Wales? | 0 | - | 4.94 | 45,382 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,696 |
| Famous Australians by Description | 0 | - | 4.23 | 27,682 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,610 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,059 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,275 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,191 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,908 |
| Slavic Languages | 0 | - | 4.67 | 54,033 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,432 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,768 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,661 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,578 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| France A-Z | 0 | - | 4.16 | 38,078 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,748 |
| Name that Greek Letter | 0 | - | 4.94 | 321,896 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,450 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,273 |
| Switzerland A-Z | 0 | - | 4.45 | 25,529 |
| Africa A-Z | 0 | - | 4.57 | 46,402 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,709 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,257 |
| Word Chain - Russia | 0 | - | 4.33 | 15,693 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,593 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,965 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| The Trojan War | 0 | - | 4.83 | 39,472 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,731 |
| History of Italy | 0 | - | 4.55 | 31,847 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,254 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,119 |
| Roman Emperors | 0 | - | 4.95 | 118,638 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,501 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,387 |
| London A-Z | 0 | - | 4.10 | 40,660 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,614 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,294 |
| Famous Chinese People | 0 | - | 4.09 | 11,814 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,911 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,808 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,225 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,024 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,660 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,983 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,021 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,829 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,628 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Regions of France | 0 | - | 4.78 | 119,453 |
| France Immigration by Country | 0 | - | 4.72 | 76,028 |
| German Groups of Things | 0 | - | 4.46 | 38,326 |
| Capitals of German States | 0 | - | 4.74 | 28,823 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,119 |
| Germany True or False? | 0 | - | 4.61 | 48,566 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,535 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,966 |
| Ancient Greek Words | 0 | - | 4.92 | 110,815 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,887 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,083 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,072 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,357 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,463 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,873 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,435 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,195 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,603 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,113 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,757 |
| Middle East A-Z | 0 | - | 4.47 | 45,833 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,424 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,959 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,232 |
| Australian Capitals | 0 | - | 4.92 | 62,604 |
| Canada A-Z | 0 | - | 4.73 | 32,673 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| Russian History A-Z | 0 | - | 4.38 | 31,144 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,913 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,802 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,374 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,092 |
| History of Austria | 0 | - | 4.70 | 17,768 |
| Geography of the French Empire | 0 | - | 4.45 | 26,953 |
| The French Revolution | 0 | - | 4.46 | 23,807 |
| France Multiple Choice | 0 | - | 4.38 | 40,650 |
| History of France | 0 | - | 4.59 | 56,234 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,029 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,670 |
| The Vikings! | 0 | - | 4.46 | 28,255 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,735 |
| The Portuguese Empire | 0 | - | 4.54 | 12,002 |
| American to British Word Translation | 0 | - | 4.12 | 135,969 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,744 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,412 |
| Champions League Top 4 | 0 | - | 4.77 | 134,113 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,925 |
| Asia Map Quiz | 0 | - | 4.99 | 908,047 |
| A Quiz About Islam | 0 | - | 4.31 | 48,237 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,498 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,961 |
| Countries of Africa | 0 | - | 5.00 | 2,511,512 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,921 |
| African East Coast | 0 | - | 4.96 | 95,170 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,044 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,931 |
| Australia Map Quiz | 0 | - | 4.94 | 342,718 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,819 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,323 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,126 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,734 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,674 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,368 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,392 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,324 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,271 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,595 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,433 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,769 |
