| European Countries by First 2 Letters | 0 | - | 4.95 | 527,565 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,100 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,891 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,701 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,629 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,635 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,980 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,057 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,829 |
| Official European Union Languages | 0 | - | 4.97 | 237,578 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,266 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,386 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,034 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,618 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,214 |
| 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 | 1,323,085 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,070 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,156 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,301 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,178 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,724 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,528 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,543 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,275 |
| 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 | 70,058 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,099 |
| German Groups of Things | 0 | - | 4.46 | 38,373 |
| 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 | 1,000,260 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,181 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,705 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,378 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,597 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,551 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,643 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,266 |
| Countries That Border Russia | 0 | - | 4.98 | 460,190 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,884 |
| States of Germany | 0 | - | 4.96 | 150,973 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,314 |
| Regions of Italy | 0 | - | 4.92 | 75,127 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,070 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,103 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,676 |
| 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 | 48,305 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,641 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,135 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,876 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,532 |
| Name a Valid African Country | 0 | - | 4.98 | 153,353 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,666 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,503 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,435 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,816 |
| Russia Country Quiz | 0 | - | 4.85 | 113,999 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,175 |
| Departments of France | 0 | - | 4.93 | 53,207 |
| Word Chain - France | 0 | - | 4.38 | 42,669 |
| Italian Foods | 0 | - | 4.31 | 72,420 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| 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 | 129,156 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,594 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,232 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,993 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,425 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,086 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,095 |
| 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 | 141,247 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,776 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,088 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,418 |
| Slavic Languages | 0 | - | 4.68 | 54,140 |
| Countries that Border Poland | 0 | - | 4.99 | 171,741 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,543 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,908 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,715 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,643 |
| The Trojan War | 0 | - | 4.83 | 39,547 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,286 |
| Name that Greek Letter | 0 | - | 4.93 | 322,441 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,101 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,515 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,256 |
| Roman Emperors | 0 | - | 4.95 | 119,148 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,927 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,327 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,963 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,455 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 487,536 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,786 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,530 |
| Famous Russians | 0 | - | 4.16 | 23,768 |
| 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 | 96,113 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,146 |
| Word Chain - Germany | 0 | - | 4.31 | 22,519 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,140 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Word Chain - Italy | 0 | - | 4.07 | 23,131 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,410 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,552 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Geography of Spain | 0 | - | 4.59 | 22,015 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,291 |
| Name a Valid English City | 0 | - | 4.19 | 16,667 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,127 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,882 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,303 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,002 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,134 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,658 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,111 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,093 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,966 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,428 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,283 |
| 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 | 4,744,023 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,786 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,855 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,209 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,886 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,723 |
| Capitals of French Regions | 0 | - | 4.45 | 16,015 |
| Regions of France | 0 | - | 4.77 | 119,874 |
| 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 | 111,054 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,837 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,814 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,019 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,139 |
| 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 | 234,934 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,086 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,393 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,418 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,189 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,080 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,647 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 176,592 |
| NFL Football Last Names | 0 | - | 4.43 | 171,088 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,952 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,158 |
| Australian Capitals | 0 | - | 4.92 | 62,648 |
| Word Chain - Australia | 0 | - | 4.37 | 38,069 |
| European Physical Geography | 0 | - | 4.26 | 33,417 |
| Albania Country Quiz | 0 | - | 4.54 | 38,816 |
| Geography of Russia | 0 | - | 4.57 | 21,471 |
| Russian History A-Z | 0 | - | 4.38 | 31,367 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,004 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,842 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,475 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,198 |
| Romania Country Quiz | 0 | - | 4.63 | 53,549 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Geography of the French Empire | 0 | - | 4.45 | 26,989 |
| The French Revolution | 0 | - | 4.46 | 23,855 |
| France Multiple Choice | 0 | - | 4.38 | 40,675 |
| History of France | 0 | - | 4.59 | 56,558 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,753 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,966 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| 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 | 138,157 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,799 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,410 |
| Champions League Top 4 | 0 | - | 4.77 | 134,833 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,662 |
| Asia Map Quiz | 0 | - | 4.99 | 910,447 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,515 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,651 |
| Actors by Last Name #1 | 0 | - | 4.28 | 68,320 |
