| European Countries by First 2 Letters | 0 | - | 4.95 | 527,549 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,099 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,886 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,618 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,630 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,976 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,056 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,828 |
| Official European Union Languages | 0 | - | 4.97 | 237,576 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,260 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,383 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,034 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,618 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,211 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,729 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,655 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,057 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,070 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,120 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,291 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,178 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,722 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,527 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,541 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,264 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,312 |
| Celtic Nations | 0 | - | 4.69 | 46,868 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,107 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,750 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,057 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,098 |
| German Groups of Things | 0 | - | 4.46 | 38,372 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,331 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,806 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,893 |
| Champions League Winners | 0 | - | 4.92 | 1,000,241 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,180 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,702 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,378 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,596 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,545 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,640 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,260 |
| Countries That Border Russia | 0 | - | 4.98 | 460,181 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,883 |
| States of Germany | 0 | - | 4.96 | 150,969 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,314 |
| Regions of Italy | 0 | - | 4.92 | 75,125 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,069 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,097 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,675 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,729 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,299 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,640 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,132 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,875 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,530 |
| Name a Valid African Country | 0 | - | 4.98 | 153,350 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,664 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,502 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,418 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,809 |
| Russia Country Quiz | 0 | - | 4.85 | 113,995 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,174 |
| Departments of France | 0 | - | 4.93 | 53,206 |
| Word Chain - France | 0 | - | 4.38 | 42,669 |
| Italian Foods | 0 | - | 4.31 | 72,420 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,423 |
| British Groups of Things | 0 | - | 4.25 | 82,758 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,152 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,593 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,229 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,988 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,421 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,079 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,091 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,499 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,624 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,246 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,767 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,086 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,417 |
| Slavic Languages | 0 | - | 4.68 | 54,139 |
| Countries that Border Poland | 0 | - | 4.99 | 171,735 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,542 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,907 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,715 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,643 |
| The Trojan War | 0 | - | 4.83 | 39,545 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,266 |
| Name that Greek Letter | 0 | - | 4.93 | 322,432 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,096 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,514 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,251 |
| Roman Emperors | 0 | - | 4.95 | 119,143 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,926 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,327 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,962 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,454 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 487,527 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,773 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,527 |
| Famous Russians | 0 | - | 4.16 | 23,767 |
| History of Russia Quiz | 0 | - | 4.49 | 31,835 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,629 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,112 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,146 |
| Word Chain - Germany | 0 | - | 4.31 | 22,519 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,113 |
| History of Italy | 0 | - | 4.55 | 31,889 |
| Word Chain - Italy | 0 | - | 4.07 | 23,131 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,408 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,551 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,080 |
| Geography of Spain | 0 | - | 4.59 | 22,014 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,290 |
| Name a Valid English City | 0 | - | 4.19 | 16,667 |
| Last Names by Country of Origin | 0 | - | 4.63 | 156,124 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,882 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,300 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,001 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,133 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,657 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,110 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,091 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,965 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,428 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,278 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,017 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,796 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,427 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,580 |
| Europe Map Quiz | 0 | - | 5.00 | 4,743,930 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,784 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,851 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,203 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,886 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,722 |
| Capitals of French Regions | 0 | - | 4.45 | 16,014 |
| Regions of France | 0 | - | 4.78 | 119,867 |
| France Immigration by Country | 0 | - | 4.72 | 76,157 |
| Famous Germans | 0 | - | 4.50 | 54,809 |
| Capitals of German States | 0 | - | 4.74 | 28,886 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,182 |
| Germany True or False? | 0 | - | 4.61 | 48,646 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,698 |
| Ancient Greek Words | 0 | - | 4.93 | 111,053 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,836 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,813 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,016 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,136 |
| British to American Food Translation | 0 | - | 3.38 | 51,902 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,447 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,926 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,082 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,393 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,417 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,189 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,071 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,647 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 176,591 |
| NFL Football Last Names | 0 | - | 4.43 | 171,086 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,907 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,134 |
| Australian Capitals | 0 | - | 4.92 | 62,647 |
| Word Chain - Australia | 0 | - | 4.37 | 38,069 |
| European Physical Geography | 0 | - | 4.26 | 33,415 |
| Albania Country Quiz | 0 | - | 4.54 | 38,816 |
| Geography of Russia | 0 | - | 4.57 | 21,471 |
| Russian History A-Z | 0 | - | 4.38 | 31,365 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,003 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,842 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,472 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,195 |
| Romania Country Quiz | 0 | - | 4.63 | 53,548 |
| History of Austria | 0 | - | 4.70 | 17,793 |
| Geography of the French Empire | 0 | - | 4.45 | 26,988 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| France Multiple Choice | 0 | - | 4.38 | 40,675 |
| History of France | 0 | - | 4.59 | 56,553 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,421 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,742 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,956 |
| The Vikings! | 0 | - | 4.46 | 28,281 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,805 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| American to British Word Translation | 0 | - | 4.13 | 138,146 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,799 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,408 |
| Champions League Top 4 | 0 | - | 4.77 | 134,829 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,649 |
| Asia Map Quiz | 0 | - | 4.99 | 910,419 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,514 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,649 |
| Actors by Last Name #1 | 0 | - | 4.28 | 68,320 |
