| Federal Subjects of Russia | 0 | - | 4.94 | 145,244 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,672 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,234 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,962 |
| Countries That Border Russia | 0 | - | 4.98 | 460,275 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,735 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,717 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,687 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,054 |
| Russia Country Quiz | 0 | - | 4.85 | 114,023 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,842 |
| Official European Union Languages | 0 | - | 4.97 | 237,632 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,298 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,509 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,553 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,629 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,737 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,664 |
| 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 | 71,766 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,295 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,074 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,114 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,091 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,266 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,406 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,896 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,736 |
| German Groups of Things | 0 | - | 4.46 | 38,380 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,192 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,735 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,537 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,561 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,819 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,420 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,197 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,717 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,608 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,574 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,673 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,312 |
| States of Germany | 0 | - | 4.96 | 151,032 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,387 |
| Regions of Italy | 0 | - | 4.92 | 75,180 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 45,898 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,335 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,152 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,717 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,906 |
| Champions League Winners | 0 | - | 4.92 | 1,000,526 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,754 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,327 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,662 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,169 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,898 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,384 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,290 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,615 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,637 |
| Name a Valid African Country | 0 | - | 4.98 | 153,388 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,671 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,518 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,625 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,870 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,080 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,189 |
| Departments of France | 0 | - | 4.93 | 53,278 |
| Word Chain - France | 0 | - | 4.38 | 42,670 |
| Italian Foods | 0 | - | 4.31 | 72,438 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,431 |
| British Groups of Things | 0 | - | 4.25 | 82,776 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,993 |
| England or Wales? | 0 | - | 4.94 | 45,481 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,213 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,604 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,274 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,021 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,462 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 487,628 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,907 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,504 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,267 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,811 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,112 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,451 |
| Slavic Languages | 0 | - | 4.68 | 54,148 |
| Countries that Border Poland | 0 | - | 4.99 | 171,763 |
| Russian History A-Z | 0 | - | 4.38 | 31,388 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,491 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,923 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,722 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,655 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,052 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,494 |
| Name that Greek Letter | 0 | - | 4.93 | 322,498 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,519 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,337 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,967 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,346 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,114 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,110 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,561 |
| Famous Russians | 0 | - | 4.16 | 23,769 |
| History of Russia Quiz | 0 | - | 4.49 | 31,841 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,639 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,857 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,131 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,152 |
| Word Chain - Germany | 0 | - | 4.31 | 22,521 |
| The Trojan War | 0 | - | 4.83 | 39,558 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,140 |
| History of Italy | 0 | - | 4.55 | 31,894 |
| Word Chain - Italy | 0 | - | 4.07 | 23,134 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,426 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,218 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,559 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,527 |
| 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 | 22,019 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,300 |
| Name a Valid English City | 0 | - | 4.19 | 16,670 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,129 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,473 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,152 |
| 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 | 132,667 |
| 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 | 106,978 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,436 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,310 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,023 |
| 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 | 81,595 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,240 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,794 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,231 |
| Capitals of French Regions | 0 | - | 4.45 | 16,016 |
| Regions of France | 0 | - | 4.77 | 119,918 |
| France Immigration by Country | 0 | - | 4.72 | 76,180 |
| Famous Germans | 0 | - | 4.50 | 54,821 |
| Capitals of German States | 0 | - | 4.74 | 28,890 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,197 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,713 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,326 |
| Ancient Greek Words | 0 | - | 4.93 | 111,086 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,864 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,050 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,150 |
| British to American Food Translation | 0 | - | 3.38 | 51,907 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,008 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,115 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,398 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,424 |
| 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 | 176,614 |
| NFL Football Last Names | 0 | - | 4.43 | 171,098 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,415 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,415 |
| Australian Capitals | 0 | - | 4.92 | 62,656 |
| Word Chain - Australia | 0 | - | 4.37 | 38,073 |
| European Physical Geography | 0 | - | 4.26 | 33,420 |
| Albania Country Quiz | 0 | - | 4.54 | 38,827 |
| Geography of Russia | 0 | - | 4.57 | 21,476 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,025 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,850 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,491 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,215 |
| Romania Country Quiz | 0 | - | 4.63 | 53,569 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,893 |
| History of Austria | 0 | - | 4.70 | 17,797 |
| Geography of the French Empire | 0 | - | 4.45 | 26,998 |
| The French Revolution | 0 | - | 4.46 | 23,859 |
| France Multiple Choice | 0 | - | 4.38 | 40,679 |
| History of France | 0 | - | 4.59 | 56,600 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,087 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,829 |
| The Vikings! | 0 | - | 4.46 | 28,284 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,822 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| American to British Word Translation | 0 | - | 4.13 | 138,236 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,806 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,430 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,455 |
| Champions League Top 4 | 0 | - | 4.77 | 134,904 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,852 |
| Asia Map Quiz | 0 | - | 4.99 | 910,766 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,524 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,664 |
