| European Countries by First 2 Letters | 0 | - | 4.95 | 531,976 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,106 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,100 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,351 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,295 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,581 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,553 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,609 |
| Official European Union Languages | 0 | - | 4.97 | 239,523 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,511 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,394 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,026 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,250 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,015 |
| History of Russia Quiz | 0 | - | 4.47 | 31,990 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,481 |
| Celtic Nations | 0 | - | 4.61 | 47,071 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,463 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,123 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,171 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,415 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,385 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,922 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,320 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,178 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,998 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,674 |
| Slavic Countries | 0 | - | 4.96 | 112,232 |
| German Groups of Things | 0 | - | 4.47 | 38,606 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,641 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,372 |
| Most Common First Names in Spain | 0 | - | 4.32 | 55,002 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,923 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,692 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,500 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,551 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,603 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,656 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,353 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,788 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,367 |
| States of Germany | 0 | - | 4.95 | 154,138 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,585 |
| Regions of Italy | 0 | - | 4.92 | 76,789 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,690 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,471 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,111 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,641 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,450 |
| Champions League Winners | 0 | - | 4.92 | 1,014,087 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,951 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,522 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,184 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,364 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,259 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,535 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,689 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,708 |
| Geography of Russia | 0 | - | 4.57 | 21,583 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,840 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,842 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,987 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,684 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,655 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,520 |
| Departments of France | 0 | - | 4.93 | 54,923 |
| Word Chain - France | 0 | - | 4.38 | 42,908 |
| Italian Foods | 0 | - | 4.30 | 73,172 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,714 |
| British Groups of Things | 0 | - | 4.25 | 82,981 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,090 |
| England or Wales? | 0 | - | 4.94 | 45,911 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,760 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,931 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,863 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,504 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,634 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,009 |
| Name a Valid African Country | 0 | - | 4.98 | 154,864 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 491,554 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 715,423 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,712 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,180 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,389 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,829 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,870 |
| Slavic Languages | 0 | - | 4.67 | 54,633 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,181 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,924 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,006 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,989 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,981 |
| Name that Greek Letter | 0 | - | 4.93 | 324,754 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,715 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,599 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,420 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,867 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,692 |
| Famous Russians | 0 | - | 4.16 | 23,895 |
| Word Chain - Russia | 0 | - | 4.33 | 15,786 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,840 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,443 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,729 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,317 |
| Word Chain - Germany | 0 | - | 4.31 | 22,666 |
| The Trojan War | 0 | - | 4.83 | 39,944 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,752 |
| History of Italy | 0 | - | 4.55 | 32,117 |
| Word Chain - Italy | 0 | - | 4.07 | 23,209 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,239 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,513 |
| Roman Emperors | 0 | - | 4.95 | 120,978 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,791 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,158 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,764 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,401 |
| Geography of Spain | 0 | - | 4.59 | 22,161 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,391 |
| Name a Valid English City | 0 | - | 4.19 | 16,802 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,391 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,376 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,120 |
| Last Names by Country of Origin | 0 | - | 4.64 | 157,190 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,352 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,320 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,718 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,094 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,193 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,105 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,754 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,112 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,878 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,393 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,611 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,319 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,311 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,226 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,458 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,673 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,149 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,270 |
| Kosovo Country Quiz | 0 | - | 4.30 | 24,686 |
| Capitals of French Regions | 0 | - | 4.45 | 16,159 |
| Regions of France | 0 | - | 4.70 | 121,847 |
| France Immigration by Country | 0 | - | 4.70 | 76,854 |
| Famous Germans | 0 | - | 4.50 | 55,712 |
| Capitals of German States | 0 | - | 4.74 | 29,046 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,511 |
| Germany True or False? | 0 | - | 4.61 | 48,978 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,366 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,197 |
| Ancient Greek Words | 0 | - | 4.93 | 112,298 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,260 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,661 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,387 |
| British to American Food Translation | 0 | - | 3.38 | 52,022 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,988 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,634 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,629 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,701 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,344 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,068 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,809 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 178,017 |
| NFL Football Last Names | 0 | - | 4.43 | 171,940 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,328 |
| Australian Capitals | 0 | - | 4.92 | 62,811 |
| Word Chain - Australia | 0 | - | 4.38 | 38,224 |
| European Physical Geography | 0 | - | 4.26 | 33,581 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,405 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,088 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,943 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,718 |
| Romania Country Quiz | 0 | - | 4.63 | 54,060 |
| History of Austria | 0 | - | 4.70 | 17,962 |
| Geography of the French Empire | 0 | - | 4.45 | 27,201 |
| The French Revolution | 0 | - | 4.47 | 24,124 |
| France Multiple Choice | 0 | - | 4.39 | 40,821 |
| History of France | 0 | - | 4.61 | 57,506 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,548 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,260 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,440 |
| The Vikings! | 0 | - | 4.46 | 28,397 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,329 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| American to British Word Translation | 0 | - | 4.14 | 139,575 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,031 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,297 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,778 |
| Champions League Top 4 | 0 | - | 4.77 | 138,463 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,392 |
| Asia Map Quiz | 0 | - | 4.99 | 923,624 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,646 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,655 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 68,631 |
| Actors by Last Name #1 | 0 | - | 4.28 | 68,794 |
| Actresses by Last Name #1 | 0 | - | 4.26 | 63,873 |
