| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,468 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,443 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,027 |
| Monarchies of Europe | 0 | - | 4.90 | 97,421 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,397 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,581 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,777 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,564 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,337 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,203 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,815 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,383 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,259 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,757 |
| The Only European Country ... | 0 | - | 4.91 | 214,165 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,773 |
| Name the English Monarchs | 0 | - | 4.92 | 498,555 |
| NATO Countries | 0 | - | 4.98 | 276,358 |
| EU Countries Quiz | 0 | - | 4.99 | 270,383 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,587 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,863 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,886 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,815 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,407 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,617 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,565 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,105 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,345 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,386 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,295 |
| Slavic Countries | 0 | - | 4.96 | 110,961 |
| Counties of England | 0 | - | 4.97 | 790,075 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,602 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,478 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,967 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,927 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,776 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,283 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,024 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,731 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,683 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,064 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,382 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,644 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,083 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,016 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,111 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,531 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,031 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,312 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,191 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,911 |
| European Countries with One Border | 0 | - | 4.97 | 181,761 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,656 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,082 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,931 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,389 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,283 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,350 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,845 |
| States of Germany | 0 | - | 4.96 | 150,376 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,127 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,592 |
| Regions of Italy | 0 | - | 4.92 | 74,865 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,918 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,519 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,410 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,121 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,562 |
| Champions League Winners | 0 | - | 4.92 | 997,526 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,072 |
| Monarchies of Asia | 0 | - | 4.97 | 70,657 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,477 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,290 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,196 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,162 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,280 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,716 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,949 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,336 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,542 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,206 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,963 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,332 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,679 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,548 |
| European Geography A-Z | 0 | - | 4.28 | 49,036 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,609 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,267 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,458 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,247 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,397 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,832 |
| Russia Country Quiz | 0 | - | 4.85 | 113,746 |
| Countries That Border Russia | 0 | - | 4.98 | 459,434 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,928 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,090 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,357 |
| Departments of France | 0 | - | 4.93 | 52,957 |
| Countries Bordering France | 0 | - | 4.83 | 400,060 |
| Germany Country Quiz | 0 | - | 4.82 | 156,739 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,290 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,321 |
| Italy Country Quiz | 0 | - | 4.82 | 122,347 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,534 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,209 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,392 |
| History of The Netherlands | 0 | - | 4.46 | 17,331 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,168 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,759 |
| British Acronyms | 0 | - | 4.39 | 45,647 |
| British Monopoly Board | 0 | - | 4.52 | 41,052 |
| England or Wales? | 0 | - | 4.94 | 45,379 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,688 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,534 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,845 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,672 |
| OPEC Countries | 0 | - | 4.74 | 84,845 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,150 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,703 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,157 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,403 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,825 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,918 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,904 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,087 |
| Countries that Border Poland | 0 | - | 4.99 | 171,475 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,430 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,778 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,765 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,841 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,852 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,581 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,852 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,601 |
| Counties of Ireland | 0 | - | 4.92 | 193,298 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,508 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,462 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,479 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,877 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,831 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,843 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,288 |
| U.S. States by Governor | 0 | - | 4.43 | 17,992 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,589 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,562 |
| European Cities Beginning with B - Click Map | 0 | - | 4.75 | 77,476 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,246 |
| History of Russia Quiz | 0 | - | 4.49 | 31,803 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,660 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,573 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,443 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,712 |
| Name that Greek Letter | 0 | - | 4.94 | 321,883 |
| History of Italy | 0 | - | 4.55 | 31,845 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,499 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,009 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,591 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,634 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,349 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,116 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,700 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,904 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,195 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,995 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,608 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,501 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| The Trojan War | 0 | - | 4.83 | 39,470 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,725 |
| Famous Irish People | 0 | - | 4.05 | 45,870 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,954 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,117 |
| Roman Emperors | 0 | - | 4.95 | 118,627 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,926 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,526 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,920 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,383 |
| British History A-Z #1 | 0 | - | 4.45 | 46,146 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,208 |
| London A-Z | 0 | - | 4.10 | 40,659 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,700 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,241 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,081 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,240 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,529 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,878 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,169 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,900 |
| Australian Capitals | 0 | - | 4.92 | 62,601 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,803 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,997 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,987 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,986 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,795 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,598 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,668 |
