| European Countries by First 2 Letters | 0 | - | 4.95 | 525,977 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,017 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,548 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,018 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,184 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 273,944 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,884 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,509 |
| Official European Union Languages | 0 | - | 4.97 | 236,326 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,591 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,796 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,482 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,479 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,523 |
| History of Russia Quiz | 0 | - | 4.49 | 31,771 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,224 |
| Celtic Nations | 0 | - | 4.69 | 46,796 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,958 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,570 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,489 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,906 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,945 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,768 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,536 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,485 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,128 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,055 |
| Slavic Countries | 0 | - | 4.96 | 110,765 |
| German Groups of Things | 0 | - | 4.46 | 38,286 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,001 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,460 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,416 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,847 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,034 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,965 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,243 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,259 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,102 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,106 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,627 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,092 |
| States of Germany | 0 | - | 4.96 | 149,740 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,896 |
| Regions of Italy | 0 | - | 4.92 | 74,585 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,723 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,275 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,122 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,049 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,778 |
| Champions League Winners | 0 | - | 4.92 | 994,917 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,234 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,032 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,420 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,506 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,555 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,229 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,088 |
| Geography of Russia | 0 | - | 4.57 | 21,415 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 90,952 |
| Name a Valid African Country | 0 | - | 4.98 | 152,793 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,601 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,364 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,212 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 112,995 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,782 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 34,990 |
| Departments of France | 0 | - | 4.93 | 52,629 |
| Word Chain - France | 0 | - | 4.38 | 42,564 |
| Italian Foods | 0 | - | 4.30 | 72,117 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,341 |
| British Groups of Things | 0 | - | 4.25 | 82,656 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,938 |
| England or Wales? | 0 | - | 4.94 | 45,276 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,258 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,479 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,536 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,424 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,923 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,110 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 709,129 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,419 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,592 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,905 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,772 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,733 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,832 |
| Slavic Languages | 0 | - | 4.67 | 53,923 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,329 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,596 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,579 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,508 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,111 |
| Name that Greek Letter | 0 | - | 4.94 | 321,405 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,403 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,221 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,899 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,315 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,368 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,763 |
| Top European Languages on a Map | 0 | - | 4.77 | 130,974 |
| Famous Russians | 0 | - | 4.16 | 23,706 |
| Word Chain - Russia | 0 | - | 4.33 | 15,680 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,542 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,754 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,819 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,080 |
| Word Chain - Germany | 0 | - | 4.31 | 22,464 |
| The Trojan War | 0 | - | 4.83 | 39,392 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,322 |
| History of Italy | 0 | - | 4.55 | 31,796 |
| Word Chain - Italy | 0 | - | 4.07 | 23,076 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,079 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,955 |
| Roman Emperors | 0 | - | 4.95 | 118,269 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,458 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,583 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,958 |
| Geography of Spain | 0 | - | 4.59 | 21,937 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,232 |
| Name a Valid English City | 0 | - | 4.19 | 16,621 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,902 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,110 |
| Last Names by Country of Origin | 0 | - | 4.63 | 155,814 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,784 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,830 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,060 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,298 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,811 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,757 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,624 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,154 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,761 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,615 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,578 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,984 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,229 |
| Europe Map Quiz | 0 | - | 5.00 | 4,726,908 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,546 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,078 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,565 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,764 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,492 |
| Kosovo Country Quiz | 0 | - | 4.30 | 24,350 |
| Capitals of French Regions | 0 | - | 4.45 | 15,977 |
| Regions of France | 0 | - | 4.78 | 119,015 |
| France Immigration by Country | 0 | - | 4.72 | 75,908 |
| Famous Germans | 0 | - | 4.50 | 54,552 |
| Capitals of German States | 0 | - | 4.74 | 28,793 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,067 |
| Germany True or False? | 0 | - | 4.61 | 48,501 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,378 |
| Olympian Gods Quiz | 0 | - | 4.96 | 494,513 |
| Ancient Greek Words | 0 | - | 4.92 | 110,532 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,237 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,713 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,021 |
| British to American Food Translation | 0 | - | 3.38 | 51,800 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,779 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,175 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,299 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,294 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,136 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 176,285 |
| NFL Football Last Names | 0 | - | 4.43 | 170,415 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,559 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,362 |
| Australian Capitals | 0 | - | 4.92 | 62,583 |
| Word Chain - Australia | 0 | - | 4.37 | 37,999 |
| European Physical Geography | 0 | - | 4.26 | 33,363 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,802 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,752 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,256 |
| Hungary Country Quiz | 0 | - | 4.49 | 42,976 |
| Romania Country Quiz | 0 | - | 4.63 | 53,297 |
| History of Austria | 0 | - | 4.70 | 17,734 |
| Geography of the French Empire | 0 | - | 4.48 | 26,910 |
| The French Revolution | 0 | - | 4.46 | 23,746 |
| France Multiple Choice | 0 | - | 4.38 | 40,617 |
| History of France | 0 | - | 4.59 | 55,863 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,368 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,056 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,540 |
| The Vikings! | 0 | - | 4.45 | 28,234 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,648 |
| The Portuguese Empire | 0 | - | 4.54 | 11,979 |
| American to British Word Translation | 0 | - | 4.06 | 117,001 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,679 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,156 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,376 |
| Champions League Top 4 | 0 | - | 4.77 | 133,458 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,436,926 |
| Asia Map Quiz | 0 | - | 4.99 | 905,612 |
| World City Nicknames Quiz | 0 | - | 4.19 | 35,446 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 67,332 |
| Actors by Last Name #1 | 0 | - | 4.28 | 68,144 |
| Actresses by Last Name #1 | 0 | - | 4.25 | 63,381 |
| Actors by Last Name #2 | 0 | - | 4.01 | 58,698 |
| Countries of Africa | 0 | - | 5.00 | 2,504,000 |
