| Federal Subjects of Russia | 0 | - | 4.95 | 148,203 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,828 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,127 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,856 |
| Countries That Border Russia | 0 | - | 4.98 | 463,002 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,955 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,183 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,575 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,849 |
| Russia Country Quiz | 0 | - | 4.83 | 114,757 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,374 |
| Official European Union Languages | 0 | - | 4.97 | 239,025 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,199 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,379 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,010 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,891 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,135 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,930 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,440 |
| Celtic Nations | 0 | - | 4.69 | 47,006 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,376 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,036 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,440 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,332 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,312 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,672 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,585 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,585 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,090 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,158 |
| German Groups of Things | 0 | - | 4.46 | 38,536 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,509 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,234 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,673 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,789 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,489 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,542 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,324 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,032 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,440 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,316 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,404 |
| Russian History A-Z | 0 | - | 4.35 | 31,898 |
| States of Germany | 0 | - | 4.95 | 153,412 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,328 |
| Regions of Italy | 0 | - | 4.92 | 76,347 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,477 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,437 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,576 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,458 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,368 |
| Champions League Winners | 0 | - | 4.92 | 1,010,528 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,624 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,422 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,010 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,209 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,005 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,383 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,612 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,603 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,765 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,804 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,766 |
| European Geographic Groups of Four | 0 | - | 4.57 | 14,493 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,617 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,186 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,512 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,431 |
| Departments of France | 0 | - | 4.93 | 54,561 |
| Word Chain - France | 0 | - | 4.38 | 42,859 |
| Italian Foods | 0 | - | 4.30 | 72,995 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,628 |
| British Groups of Things | 0 | - | 4.25 | 82,919 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| England or Wales? | 0 | - | 4.94 | 45,820 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,144 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,854 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,425 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,159 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,310 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,673 |
| Name a Valid African Country | 0 | - | 4.98 | 154,460 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 490,690 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 714,168 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,660 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,934 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,751 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,677 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,465 |
| Slavic Languages | 0 | - | 4.68 | 54,500 |
| Countries that Border Poland | 0 | - | 4.99 | 172,662 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,678 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,469 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,941 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,905 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,704 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,409 |
| Name that Greek Letter | 0 | - | 4.93 | 324,271 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,677 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,523 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,052 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,908 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,582 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,409 |
| Famous Russians | 0 | - | 4.16 | 23,875 |
| History of Russia Quiz | 0 | - | 4.47 | 31,962 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,788 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,708 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,568 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,274 |
| Word Chain - Germany | 0 | - | 4.31 | 22,633 |
| The Trojan War | 0 | - | 4.83 | 39,825 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,338 |
| History of Italy | 0 | - | 4.55 | 32,070 |
| Word Chain - Italy | 0 | - | 4.07 | 23,194 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,017 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,714 |
| Roman Emperors | 0 | - | 4.95 | 120,471 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,734 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,010 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,559 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| Geography of Spain | 0 | - | 4.59 | 22,114 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,367 |
| Name a Valid English City | 0 | - | 4.19 | 16,758 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,819 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,141 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,689 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,962 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,282 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,286 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,053 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,456 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,848 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,398 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,064 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,407 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,249 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,061 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,324 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,896 |
| Europe Map Quiz | 0 | - | 5.00 | 4,773,463 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,934 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,569 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Regions of France | 0 | - | 4.70 | 121,361 |
| France Immigration by Country | 0 | - | 4.70 | 76,706 |
| Famous Germans | 0 | - | 4.50 | 55,556 |
| Capitals of German States | 0 | - | 4.74 | 28,997 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,416 |
| Germany True or False? | 0 | - | 4.61 | 48,911 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,180 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,117 |
| Ancient Greek Words | 0 | - | 4.93 | 111,991 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,881 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,529 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,358 |
| British to American Food Translation | 0 | - | 3.38 | 51,991 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,236 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,160 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,566 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,626 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,300 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,017 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,775 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 177,795 |
| NFL Football Last Names | 0 | - | 4.43 | 171,790 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,077 |
| Australian Capitals | 0 | - | 4.92 | 62,771 |
| Word Chain - Australia | 0 | - | 4.38 | 38,178 |
| European Physical Geography | 0 | - | 4.26 | 33,545 |
| Albania Country Quiz | 0 | - | 4.54 | 39,102 |
| Geography of Russia | 0 | - | 4.57 | 21,557 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,317 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,030 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,830 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,580 |
| Romania Country Quiz | 0 | - | 4.63 | 53,938 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,110 |
| History of Austria | 0 | - | 4.70 | 17,918 |
| Geography of the French Empire | 0 | - | 4.45 | 27,162 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| France Multiple Choice | 0 | - | 4.39 | 40,778 |
| History of France | 0 | - | 4.61 | 57,319 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,272 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,299 |
| The Vikings! | 0 | - | 4.46 | 28,373 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,230 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,366 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,967 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,192 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,736 |
| Champions League Top 4 | 0 | - | 4.77 | 137,460 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,972 |
| Asia Map Quiz | 0 | - | 4.99 | 920,317 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,605 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,621 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 68,260 |
