| Federal Subjects of Russia | 0 | - | 4.94 | 145,220 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,662 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,231 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,946 |
| Countries That Border Russia | 0 | - | 4.98 | 460,261 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,733 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,704 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,679 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,042 |
| Russia Country Quiz | 0 | - | 4.85 | 114,020 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,837 |
| Official European Union Languages | 0 | - | 4.97 | 237,621 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,291 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,490 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,551 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,627 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,735 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,663 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,126 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,763 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,267 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,073 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,110 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,088 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,245 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,366 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,895 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,735 |
| German Groups of Things | 0 | - | 4.46 | 38,378 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,189 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,735 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,535 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,559 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,817 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,392 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,195 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,717 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,607 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,571 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,670 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,300 |
| States of Germany | 0 | - | 4.96 | 151,027 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,358 |
| Regions of Italy | 0 | - | 4.92 | 75,176 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,952 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,334 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,145 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,713 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,902 |
| Champions League Winners | 0 | - | 4.92 | 1,000,479 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,751 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,321 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,656 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,166 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,894 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,384 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,289 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,614 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,596 |
| Name a Valid African Country | 0 | - | 4.98 | 153,382 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,670 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,515 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,606 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,865 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,078 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,187 |
| Departments of France | 0 | - | 4.93 | 53,270 |
| Word Chain - France | 0 | - | 4.38 | 42,670 |
| Italian Foods | 0 | - | 4.31 | 72,434 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,429 |
| British Groups of Things | 0 | - | 4.25 | 82,766 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,992 |
| England or Wales? | 0 | - | 4.94 | 45,478 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,203 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,603 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,268 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,013 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,460 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 487,619 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,890 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,501 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,263 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,805 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,104 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,441 |
| Slavic Languages | 0 | - | 4.68 | 54,147 |
| Countries that Border Poland | 0 | - | 4.99 | 171,758 |
| Russian History A-Z | 0 | - | 4.38 | 31,381 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,485 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,922 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,721 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,654 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,049 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,475 |
| Name that Greek Letter | 0 | - | 4.93 | 322,495 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,519 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,335 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,967 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,344 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,112 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,110 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,558 |
| Famous Russians | 0 | - | 4.16 | 23,769 |
| History of Russia Quiz | 0 | - | 4.49 | 31,839 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,637 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,855 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,130 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,151 |
| Word Chain - Germany | 0 | - | 4.31 | 22,521 |
| The Trojan War | 0 | - | 4.83 | 39,554 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,131 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Word Chain - Italy | 0 | - | 4.07 | 23,134 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,424 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,205 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,558 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,526 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,942 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Geography of Spain | 0 | - | 4.59 | 22,018 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,297 |
| Name a Valid English City | 0 | - | 4.19 | 16,670 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,128 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,469 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,148 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,897 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,008 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,141 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,662 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,119 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,099 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,977 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,435 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,302 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,022 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,435 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,593 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,064 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,794 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,224 |
| Capitals of French Regions | 0 | - | 4.45 | 16,016 |
| Regions of France | 0 | - | 4.77 | 119,914 |
| France Immigration by Country | 0 | - | 4.72 | 76,173 |
| Famous Germans | 0 | - | 4.50 | 54,820 |
| Capitals of German States | 0 | - | 4.74 | 28,890 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,196 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,712 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,307 |
| Ancient Greek Words | 0 | - | 4.93 | 111,082 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,857 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,048 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,150 |
| British to American Food Translation | 0 | - | 3.38 | 51,906 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,997 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,111 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,397 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,423 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,190 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,651 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 176,612 |
| NFL Football Last Names | 0 | - | 4.43 | 171,098 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,329 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,387 |
| Australian Capitals | 0 | - | 4.92 | 62,655 |
| Word Chain - Australia | 0 | - | 4.37 | 38,073 |
| European Physical Geography | 0 | - | 4.26 | 33,419 |
| Albania Country Quiz | 0 | - | 4.54 | 38,826 |
| Geography of Russia | 0 | - | 4.57 | 21,476 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,024 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,849 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,489 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,212 |
| Romania Country Quiz | 0 | - | 4.63 | 53,566 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,893 |
| History of Austria | 0 | - | 4.70 | 17,796 |
| Geography of the French Empire | 0 | - | 4.45 | 26,998 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| France Multiple Choice | 0 | - | 4.38 | 40,678 |
| History of France | 0 | - | 4.59 | 56,592 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,079 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,826 |
| The Vikings! | 0 | - | 4.46 | 28,283 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,814 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| American to British Word Translation | 0 | - | 4.13 | 138,233 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,806 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,418 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,455 |
| Champions League Top 4 | 0 | - | 4.77 | 134,890 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,824 |
| Asia Map Quiz | 0 | - | 4.99 | 910,734 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,522 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,662 |
