| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,448 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,686 |
| Monarchies of Europe | 0 | - | 4.90 | 98,139 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,532 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,166 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,979 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,875 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,109 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,994 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,241 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,115 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,014 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,226 |
| The Only European Country ... | 0 | - | 4.91 | 216,600 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,111 |
| Name the English Monarchs | 0 | - | 4.91 | 502,607 |
| NATO Countries | 0 | - | 4.98 | 280,323 |
| EU Countries Quiz | 0 | - | 4.99 | 274,158 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,437 |
| All World Leaders 2026 | 0 | - | 4.94 | 20,059 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,243,963 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,632 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,652 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,197 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,685 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,147 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,473 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,814 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,277 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,182 |
| Slavic Countries | 0 | - | 4.96 | 111,652 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,004 |
| Counties of England | 0 | - | 4.97 | 796,632 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,915 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,230 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 118,822 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,957 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,611 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,507 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,641 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,536 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,838 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,694 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,005 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,428 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,595 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,266 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,349 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,848 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,511 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,294 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,123 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,490 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,750 |
| European Countries with One Border | 0 | - | 4.97 | 182,766 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,566 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,217 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,976 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,128 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,890 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,418 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,806 |
| States of Germany | 0 | - | 4.96 | 152,553 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,028 |
| Regions of Italy | 0 | - | 4.92 | 75,861 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,146 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,930 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,200 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 93,995 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,694 |
| Champions League Winners | 0 | - | 4.92 | 1,006,620 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,505 |
| Monarchies of Asia | 0 | - | 4.97 | 71,085 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,884 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,034 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,341 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,169 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,614 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,915 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,047 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,717 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,532 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,169 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,734 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,925 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,496 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,186 |
| European Geography A-Z | 0 | - | 4.29 | 49,264 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,952 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,803 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,977 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,707 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,260 |
| Russia Country Quiz | 0 | - | 4.85 | 114,479 |
| Countries That Border Russia | 0 | - | 4.98 | 461,714 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,336 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,342 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,683 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,732 |
| Departments of France | 0 | - | 4.93 | 54,089 |
| Countries Bordering France | 0 | - | 4.83 | 402,527 |
| Germany Country Quiz | 0 | - | 4.83 | 157,839 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,318 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,385 |
| Italy Country Quiz | 0 | - | 4.80 | 123,396 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,358 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,034 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,545 |
| History of The Netherlands | 0 | - | 4.46 | 17,433 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,919 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,644 |
| British Acronyms | 0 | - | 4.40 | 45,799 |
| British Monopoly Board | 0 | - | 4.52 | 41,166 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,779 |
| England or Wales? | 0 | - | 4.94 | 45,686 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,336 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,961 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,025 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,801 |
| All OPEC Countries Ever | 0 | - | 4.74 | 97,883 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,502 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,197 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,969 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,789 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,104 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,380 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,437 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,051 |
| Countries that Border Poland | 0 | - | 4.99 | 172,271 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,841 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,806 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,218 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,391 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,766 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,311 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,869 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,177 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,662 |
| Counties of Ireland | 0 | - | 4.92 | 195,241 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,859 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,032 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,971 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,677 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,648 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,832 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 279,139 |
| U.S. States by Governor | 0 | - | 4.43 | 18,063 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,695 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,678 |
| European Cities Beginning with B - Click Map | 0 | - | 4.78 | 78,153 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,076 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,871 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,803 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,380 |
| Name that Greek Letter | 0 | - | 4.93 | 323,439 |
| History of Italy | 0 | - | 4.55 | 31,973 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,659 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,234 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,861 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,791 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,660 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,916 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 401,336 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,820 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,361 |
| Russian History A-Z | 0 | - | 4.38 | 31,710 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,784 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,017 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,139 |
| The Trojan War | 0 | - | 4.83 | 39,723 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,833 |
| Famous Irish People | 0 | - | 4.05 | 45,994 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,523 |
| Roman Emperors | 0 | - | 4.95 | 120,030 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,575 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,936 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,531 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,530 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| British Geography A-Z | 0 | - | 4.42 | 19,518 |
| British History A-Z #1 | 0 | - | 4.45 | 46,481 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,240 |
| London A-Z | 0 | - | 4.10 | 40,773 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 110,062 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,452 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,271 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,488 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,934 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,768 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,236 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,172 |
| Australian Capitals | 0 | - | 4.92 | 62,721 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,187 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,041 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,038 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,642 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,643 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,900 |
