| Counties of England | 0 | - | 4.97 | 788,957 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,287 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,312 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,227 |
| Monarchies of Europe | 0 | - | 4.90 | 97,290 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,205 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,088 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,663 |
| States of Germany | 0 | - | 4.96 | 149,978 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,993 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Regions of Italy | 0 | - | 4.92 | 74,674 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,786 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,283 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,124 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,886 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,402 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,507 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,216 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,094 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,737 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,443 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,110 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,039 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,088 |
| Name the English Monarchs | 0 | - | 4.92 | 497,764 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,915 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,249 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,488 |
| The Only European Country ... | 0 | - | 4.91 | 213,738 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,472 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| British Acronyms | 0 | - | 4.39 | 45,616 |
| NATO Countries | 0 | - | 4.98 | 275,564 |
| EU Countries Quiz | 0 | - | 4.99 | 269,792 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,975 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,379 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,976 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,476 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,679 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,258 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,251 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,449 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,764 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,798 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,222 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,168 |
| Slavic Countries | 0 | - | 4.96 | 110,827 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,039 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,934 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,718 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,369 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,873 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,806 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,679 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,196 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,852 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,651 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,610 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,010 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,281 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,578 |
| Regions of France | 0 | - | 4.78 | 119,180 |
| France Immigration by Country | 0 | - | 4.72 | 75,947 |
| Famous Germans | 0 | - | 4.50 | 54,601 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,447 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,350 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,767 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,927 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,023 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,334 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,812 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,191 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,129 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,768 |
| European Countries with One Border | 0 | - | 4.97 | 181,582 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,491 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,898 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,750 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,916 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,165 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,774 |
| History of France | 0 | - | 4.59 | 55,990 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,987 |
| American to British Word Translation | 0 | - | 4.06 | 117,044 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,046 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,204 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,458 |
| People on Money - England | 0 | - | 4.29 | 16,561 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,314 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,167 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,753 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| Champions League Winners | 0 | - | 4.92 | 996,019 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,982 |
| Monarchies of Asia | 0 | - | 4.97 | 70,587 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,422 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,072 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,058 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,147 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,644 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,194 |
| Russia Country Quiz | 0 | - | 4.85 | 113,618 |
| Countries That Border Russia | 0 | - | 4.98 | 458,821 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,830 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,024 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,145 |
| Departments of France | 0 | - | 4.93 | 52,769 |
| Countries Bordering France | 0 | - | 4.83 | 398,670 |
| Germany Country Quiz | 0 | - | 4.82 | 156,492 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,118 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,958 |
| Italy Country Quiz | 0 | - | 4.82 | 122,158 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,329 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,035 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,357 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,934 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,611 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,432 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,482 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,683 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,529 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,186 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,465 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,876 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,251 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,467 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,141 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,905 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,286 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,252 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,496 |
| European Geography A-Z | 0 | - | 4.28 | 48,987 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,597 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,978 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,764 |
| The Mafia Quiz | 0 | - | 4.46 | 23,203 |
| Canary Islands | 0 | - | 4.61 | 17,398 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,133 |
| British Spellings | 0 | - | 4.07 | 99,201 |
| British Groups of Things | 0 | - | 4.25 | 82,667 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,943 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.62 | 24,435 |
| British Monopoly Board | 0 | - | 4.52 | 41,025 |
| OPEC Countries | 0 | - | 4.74 | 84,812 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,115 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,082 |
| U.S. States by Governor | 0 | - | 4.43 | 17,979 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,570 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,545 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,220 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,088 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,781 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,828 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,778 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,940 |
| Countries that Border Poland | 0 | - | 4.99 | 171,312 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,362 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,374 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,676 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,602 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,532 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,719 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,378 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,751 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,511 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,786 |
| Geography of Germany | 0 | - | 4.35 | 17,082 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,244 |
| History of Germany | 0 | - | 4.39 | 52,612 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,724 |
| Name that Greek Letter | 0 | - | 4.94 | 321,597 |
| Counties of Ireland | 0 | - | 4.92 | 192,980 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,429 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,271 |
| History of Spain | 0 | - | 4.29 | 20,998 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,245 |
| British to American Word Translation | 0 | - | 3.74 | 253,293 |
| British Foods by Description | 0 | - | 3.94 | 48,228 |
| British and American Word Differences | 0 | - | 2.67 | 45,909 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,502 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,552 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,685 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,072 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,493 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,699 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,745 |
| Bridges of London | 0 | - | 4.17 | 10,061 |
| British Sport Trivia | 0 | - | 4.37 | 20,360 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,034 |
