| European Countries by First 2 Letters | 0 | - | 4.95 | 527,751 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,000 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,847 |
| Official European Union Languages | 0 | - | 4.97 | 237,645 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,308 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,535 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,748 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,753 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,703 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,069 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,744 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,631 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,667 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,316 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,388 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,095 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,283 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,440 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,195 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,740 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,538 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,564 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,456 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,129 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,773 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,078 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,120 |
| German Groups of Things | 0 | - | 4.46 | 38,380 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,821 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,202 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,721 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,617 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,588 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,293 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,678 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,327 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,274 |
| States of Germany | 0 | - | 4.96 | 151,056 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,447 |
| Regions of Italy | 0 | - | 4.92 | 75,192 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 47,174 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,336 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,163 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,725 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,911 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,618 |
| Champions League Winners | 0 | - | 4.92 | 1,000,615 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,767 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,335 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,667 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,177 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,905 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,387 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,705 |
| Name a Valid African Country | 0 | - | 4.98 | 153,408 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,671 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,507 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,521 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,269 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,824 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,668 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,891 |
| Slavic Languages | 0 | - | 4.68 | 54,151 |
| Departments of France | 0 | - | 4.93 | 53,294 |
| Word Chain - France | 0 | - | 4.38 | 42,674 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,521 |
| Italian Foods | 0 | - | 4.31 | 72,443 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,435 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,350 |
| British Groups of Things | 0 | - | 4.25 | 82,777 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,993 |
| England or Wales? | 0 | - | 4.94 | 45,486 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,229 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,607 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,295 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,032 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,476 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 487,653 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,937 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,363 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,123 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,468 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,144 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,565 |
| History of Russia Quiz | 0 | - | 4.49 | 31,844 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,641 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,561 |
| Name that Greek Letter | 0 | - | 4.93 | 322,525 |
| History of Italy | 0 | - | 4.55 | 31,897 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,431 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,564 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,967 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,156 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,125 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,115 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,581 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,234 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,243 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,157 |
| Capitals of French Regions | 0 | - | 4.45 | 16,017 |
| Capitals of German States | 0 | - | 4.74 | 28,891 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,200 |
| Word Chain - Germany | 0 | - | 4.31 | 22,522 |
| The Trojan War | 0 | - | 4.83 | 39,561 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,148 |
| Word Chain - Italy | 0 | - | 4.07 | 23,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,277 |
| Roman Emperors | 0 | - | 4.95 | 119,229 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,946 |
| 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 | 16,671 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,483 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,657 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 176,618 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,519 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,902 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,524 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,011 |
| Australian Capitals | 0 | - | 4.92 | 62,657 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,144 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,674 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,130 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,104 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,984 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,440 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,316 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,026 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,805 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,440 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,602 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,797 |
| Regions of France | 0 | - | 4.77 | 119,953 |
| France Immigration by Country | 0 | - | 4.72 | 76,192 |
| Famous Germans | 0 | - | 4.50 | 54,828 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,723 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,377 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,877 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,054 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,534 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,153 |
| British to American Food Translation | 0 | - | 3.38 | 51,907 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,878 |
| Asia Map Quiz | 0 | - | 4.99 | 910,861 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,399 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,425 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,191 |
| NFL Football Last Names | 0 | - | 4.43 | 171,100 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,249 |
| African East Coast | 0 | - | 4.96 | 95,515 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,357 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,193 |
| Word Chain - Australia | 0 | - | 4.37 | 38,073 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,061 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,464 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,910 |
| European Physical Geography | 0 | - | 4.26 | 33,421 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,297 |
| Country Codes of Europe | 0 | - | 3.46 | 13,676 |
| The Only European Country ... | 0 | - | 4.91 | 215,107 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,295 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,888 |
| Geography of Russia | 0 | - | 4.57 | 21,478 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,851 |
| History of Austria | 0 | - | 4.70 | 17,798 |
| Presidents of France | 0 | - | 4.25 | 23,980 |
| Geography of the French Empire | 0 | - | 4.45 | 26,999 |
| The French Revolution | 0 | - | 4.46 | 23,860 |
| France Multiple Choice | 0 | - | 4.38 | 40,679 |
| History of France | 0 | - | 4.59 | 56,617 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Ancient Greek Words | 0 | - | 4.93 | 111,093 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,833 |
| The Vikings! | 0 | - | 4.46 | 28,285 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,857 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,992 |
| American to British Word Translation | 0 | - | 4.13 | 138,260 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,811 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,434 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,461 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,023 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,125 |
| Champions League Top 4 | 0 | - | 4.77 | 134,929 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,183 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,530 |
| Most Popular J Names | 0 | - | 3.55 | 189,054 |
| Most Popular Girl Names in the U.S. 2024 | 0 | - | 3.77 | 180,675 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,670 |
| Actors by Last Name #1 | 0 | - | 4.28 | 68,363 |
| Actresses by Last Name #1 | 0 | - | 4.25 | 63,552 |
| Actors by Last Name #2 | 0 | - | 4.01 | 58,854 |
| Countries of Africa | 0 | - | 5.00 | 2,521,152 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,014 |
| Australia Map Quiz | 0 | - | 4.94 | 343,253 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,258 |
