| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,774 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,600 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,282 |
| Monarchies of Europe | 0 | - | 4.90 | 97,665 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,652 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,421 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,836 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,592 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,449 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,644 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,990 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,827 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,231 |
| The Only European Country ... | 0 | - | 4.91 | 214,991 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,237 |
| Name the English Monarchs | 0 | - | 4.92 | 499,901 |
| NATO Countries | 0 | - | 4.98 | 277,869 |
| EU Countries Quiz | 0 | - | 4.99 | 271,430 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,123 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,811 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,138 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,099 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,669 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,281 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,737 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,185 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,317 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,685 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,501 |
| Slavic Countries | 0 | - | 4.96 | 111,199 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,729 |
| Counties of England | 0 | - | 4.97 | 792,173 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,313 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,659 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,114 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,094 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,968 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,431 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,289 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,019 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,801 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,432 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,586 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,789 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,143 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,138 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,309 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,865 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,440 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,555 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,285 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,205 |
| European Countries with One Border | 0 | - | 4.97 | 182,069 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,934 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,486 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,274 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,116 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,500 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,699 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,104 |
| States of Germany | 0 | - | 4.96 | 150,987 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,324 |
| Regions of Italy | 0 | - | 4.92 | 75,138 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,080 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,113 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,691 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,304 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Champions League Winners | 0 | - | 4.92 | 1,000,331 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,165 |
| Monarchies of Asia | 0 | - | 4.97 | 70,810 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,606 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,411 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,540 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,419 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,421 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,845 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,086 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,709 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,667 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,354 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,081 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,420 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,603 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,643 |
| European Geography A-Z | 0 | - | 4.29 | 49,099 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,625 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,782 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,639 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,486 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,833 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,969 |
| Russia Country Quiz | 0 | - | 4.85 | 114,007 |
| Countries That Border Russia | 0 | - | 4.98 | 460,208 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,063 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,179 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,645 |
| Departments of France | 0 | - | 4.93 | 53,244 |
| Countries Bordering France | 0 | - | 4.83 | 401,000 |
| Germany Country Quiz | 0 | - | 4.82 | 157,124 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,508 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,918 |
| Italy Country Quiz | 0 | - | 4.82 | 122,629 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,773 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,406 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,367 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,004 |
| British Acronyms | 0 | - | 4.39 | 45,694 |
| British Monopoly Board | 0 | - | 4.52 | 41,093 |
| England or Wales? | 0 | - | 4.94 | 45,474 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,173 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,670 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,245 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,997 |
| OPEC Countries | 0 | - | 4.74 | 84,928 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,267 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,311 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,628 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,708 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,918 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,070 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,096 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,426 |
| Countries that Border Poland | 0 | - | 4.99 | 171,745 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,547 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,440 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,913 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,038 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,623 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,010 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,686 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,961 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,296 |
| Counties of Ireland | 0 | - | 4.92 | 193,934 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,623 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,846 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,177 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 129,398 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,019 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,991 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,088 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,616 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,600 |
| European Cities Beginning with B - Click Map | 0 | - | 4.77 | 77,697 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,536 |
| History of Russia Quiz | 0 | - | 4.49 | 31,837 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,716 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,644 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,519 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,333 |
| Name that Greek Letter | 0 | - | 4.93 | 322,458 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,554 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,701 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,677 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,456 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,445 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 398,906 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,141 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,254 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,220 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,761 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,784 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,068 |
| The Trojan War | 0 | - | 4.83 | 39,549 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,108 |
| Famous Irish People | 0 | - | 4.05 | 45,903 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,108 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,258 |
| Roman Emperors | 0 | - | 4.95 | 119,156 |
| Countries Closest to Iceland | 0 | - | 4.89 | 73,124 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,641 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,495 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,094 |
| People on Money - England | 0 | - | 4.29 | 16,587 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,497 |
| British Geography A-Z | 0 | - | 4.41 | 19,464 |
| British History A-Z #1 | 0 | - | 4.45 | 46,282 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,216 |
| London A-Z | 0 | - | 4.10 | 40,693 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,784 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,287 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,120 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,301 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,637 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,075 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,233 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,005 |
| Australian Capitals | 0 | - | 4.92 | 62,651 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,929 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,015 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,011 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,193 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,051 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,681 |
