| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,915 |
| Name that Greek Letter | 0 | - | 4.93 | 324,178 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,856 |
| The Trojan War | 0 | - | 4.83 | 39,799 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,254 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,600 |
| Ancient Greek Words | 0 | - | 4.93 | 111,916 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,852 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,933 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,387 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,637 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,381 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,436 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,352 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,330 |
| Official European Union Languages | 0 | - | 4.97 | 238,933 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,136 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,068 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,655 |
| Roman Emperors | 0 | - | 4.95 | 120,404 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,112 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,916 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,783 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,898 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,655 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,764 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,221 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,431 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,354 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,009 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,301 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,296 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,390 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,541 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,237 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,072 |
| German Groups of Things | 0 | - | 4.46 | 38,526 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,480 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,198 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,177 |
| Geography of Spain | 0 | - | 4.59 | 22,107 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,445 |
| Champions League Winners | 0 | - | 4.92 | 1,009,952 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,279 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,596 |
| Celtic Nations | 0 | - | 4.69 | 46,997 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,935 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,393 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,735 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,316 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,015 |
| Countries Bordering France | 0 | - | 4.83 | 403,573 |
| German Loan Words | 0 | - | 4.28 | 138,790 |
| States of Germany | 0 | - | 4.95 | 153,222 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,288 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,697 |
| Regions of Italy | 0 | - | 4.92 | 76,241 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,429 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,415 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,419 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,755 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,561 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,394 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,976 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,949 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,350 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,791 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,403 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,749 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,644 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,377 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,078 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,043 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,509 |
| Austria... or Australia? | 0 | - | 4.68 | 104,507 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,666 |
| Departments of France | 0 | - | 4.93 | 54,471 |
| Word Chain - France | 0 | - | 4.38 | 42,845 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,967 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,286 |
| Counties of Ireland | 0 | - | 4.92 | 196,071 |
| Italian Foods | 0 | - | 4.30 | 72,940 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,025 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,419 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,358 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,616 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,370 |
| British Groups of Things | 0 | - | 4.25 | 82,912 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,056 |
| British Monopoly Board | 0 | - | 4.52 | 41,194 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,382 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,283 |
| Name the English Monarchs | 0 | - | 4.91 | 503,978 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,805 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,009 |
| England or Wales? | 0 | - | 4.94 | 45,803 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,008 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,840 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,356 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,097 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,231 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,407 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,607 |
| Name a Valid African Country | 0 | - | 4.98 | 154,369 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,826 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,509 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,646 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,883 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,620 |
| Slavic Languages | 0 | - | 4.67 | 54,468 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,063 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,092 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,745 |
| Mediterranean Foods | 0 | - | 3.80 | 11,464 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,371 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,509 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,712 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,665 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,507 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,654 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,792 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,993 |
| Roman Names for Places | 0 | - | 4.62 | 58,402 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,403 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,801 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,747 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,069 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,046 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,738 |
| Monty Python Quotes | 0 | - | 4.89 | 42,510 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,400 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,964 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,693 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 402,765 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,108 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 490,476 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 713,922 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,265 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,277 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,356 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,778 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,028 |
| Word Chain - Germany | 0 | - | 4.31 | 22,616 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,920 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,524 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,563 |
| Famous Irish People | 0 | - | 4.05 | 46,024 |
| History of Italy | 0 | - | 4.55 | 32,054 |
| Word Chain - Italy | 0 | - | 4.07 | 23,181 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,963 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,204 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,297 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,360 |
| Name a Valid English City | 0 | - | 4.19 | 16,752 |
| British Geography A-Z | 0 | - | 4.42 | 19,561 |
| Shakespearean Characters | 0 | - | 4.38 | 37,679 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,051 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,107 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,692 |
| London A-Z | 0 | - | 4.10 | 40,815 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,018 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,677 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,971 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,373 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,764 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,322 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,990 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,322 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,203 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,013 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,285 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,837 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,471 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,886 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,819 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,549 |
| Capitals of French Regions | 0 | - | 4.45 | 16,112 |
| Regions of France | 0 | - | 4.72 | 121,257 |
| France Immigration by Country | 0 | - | 4.70 | 76,684 |
| Famous Germans | 0 | - | 4.50 | 55,534 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,402 |
| Germany True or False? | 0 | - | 4.61 | 48,892 |
| German History A-Z | 0 | - | 4.49 | 24,665 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,142 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,806 |
| Serie A Champions | 0 | - | 4.29 | 58,485 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,123 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,038 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,279 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,501 |
| 2026 La Liga Clubs | 0 | - | 4.33 | 70,174 |
| La Liga - Trofeo Pichichi | 0 | - | 4,54 | 7.189 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,340 |
| British to American Food Translation | 0 | - | 3.38 | 51,985 |
