| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,927 |
| Counties of England | 0 | - | 4.97 | 795,540 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,287 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,537 |
| Monarchies of Europe | 0 | - | 4.90 | 98,027 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,094 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,262 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,678 |
| States of Germany | 0 | - | 4.96 | 152,169 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,950 |
| Regions of Italy | 0 | - | 4.92 | 75,706 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,022 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,770 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,102 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,916 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,679 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,835 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,019 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,879 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,942 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,889 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,881 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,245 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,820 |
| Name the English Monarchs | 0 | - | 4.91 | 501,962 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,732 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,184 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,001 |
| The Only European Country ... | 0 | - | 4.91 | 216,262 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,926 |
| History of The Netherlands | 0 | - | 4.46 | 17,422 |
| British Acronyms | 0 | - | 4.40 | 45,778 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,729 |
| NATO Countries | 0 | - | 4.98 | 279,643 |
| EU Countries Quiz | 0 | - | 4.99 | 273,303 |
| History of Italy | 0 | - | 4.55 | 31,955 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,636 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,196 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,824 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,756 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,124 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,535 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,070 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,390 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,054 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,196 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,037 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,125 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,917 |
| Slavic Countries | 0 | - | 4.96 | 111,556 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,314 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,315 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,133 |
| All World Leaders 2026 | 0 | - | 4.96 | 19,355 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,639 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,740 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,460 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,178 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,233 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,288 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,323 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,632 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,539 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,859 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,231 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,439 |
| Regions of France | 0 | - | 4.75 | 120,573 |
| France Immigration by Country | 0 | - | 4.70 | 76,452 |
| Famous Germans | 0 | - | 4.50 | 55,235 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,935 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,386 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,293 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,143 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,740 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,367 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,086 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,007 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,440 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,617 |
| European Countries with One Border | 0 | - | 4.97 | 182,616 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,431 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,020 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,826 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,735 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,799 |
| History of Austria | 0 | - | 4.70 | 17,849 |
| Geography of the French Empire | 0 | - | 4.45 | 27,040 |
| The French Revolution | 0 | - | 4.46 | 23,920 |
| History of France | 0 | - | 4.59 | 56,910 |
| The Vikings! | 0 | - | 4.46 | 28,333 |
| The Portuguese Empire | 0 | - | 4.58 | 12,056 |
| American to British Word Translation | 0 | - | 4.14 | 138,879 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,873 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,158 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,614 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,521 |
| People on Money - England | 0 | - | 4.29 | 16,608 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,318 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,380 |
| Geography of the British Empire | 0 | - | 4.48 | 39,643 |
| Champions League Winners | 0 | - | 4.92 | 1,005,296 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,433 |
| Monarchies of Asia | 0 | - | 4.97 | 71,027 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,811 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,212 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,051 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,499 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,429 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,502 |
| Russia Country Quiz | 0 | - | 4.85 | 114,364 |
| Countries That Border Russia | 0 | - | 4.98 | 461,373 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,284 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,317 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,647 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,579 |
| Departments of France | 0 | - | 4.93 | 53,960 |
| Countries Bordering France | 0 | - | 4.83 | 402,154 |
| Germany Country Quiz | 0 | - | 4.82 | 157,703 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,989 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,836 |
| Italy Country Quiz | 0 | - | 4.82 | 123,289 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,209 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,884 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,530 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,795 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,495 |
| England or Wales? | 0 | - | 4.94 | 45,634 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,086 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,915 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,853 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,671 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,336 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,657 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,827 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,475 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,315 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,962 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,571 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,808 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,129 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,067 |
| European Geography A-Z | 0 | - | 4.29 | 49,224 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,648 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,708 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,203 |
| Famous French People | 0 | - | 4.06 | 35,317 |
| The Mafia Quiz | 0 | - | 4.46 | 23,312 |
| Canary Islands | 0 | - | 4.62 | 17,470 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,644 |
| British Spellings | 0 | - | 4.06 | 99,425 |
| British Groups of Things | 0 | - | 4.25 | 82,850 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,027 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,101 |
| British Monopoly Board | 0 | - | 4.52 | 41,152 |
| All OPEC Countries Ever | 0 | - | 4.77 | 91,046 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,455 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,706 |
| U.S. States by Governor | 0 | - | 4.43 | 18,054 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,680 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,658 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,636 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,195 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,076 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,322 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,391 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,915 |
| Countries that Border Poland | 0 | - | 4.99 | 172,150 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,777 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,499 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,143 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,826 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,761 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,320 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,745 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,235 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,819 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,125 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,467 |
| Geography of Germany | 0 | - | 4.35 | 17,173 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,359 |
| History of Germany | 0 | - | 4.39 | 52,793 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,636 |
| Name that Greek Letter | 0 | - | 4.93 | 323,250 |
| Counties of Ireland | 0 | - | 4.92 | 194,925 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,799 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,872 |
| History of Spain | 0 | - | 4.23 | 21,075 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,799 |
| British to American Word Translation | 0 | - | 3.74 | 255,033 |
| British Foods by Description | 0 | - | 3.94 | 48,321 |
| British and American Word Differences | 0 | - | 2.63 | 46,865 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,586 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,415 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,744 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,760 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,139 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,615 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,298 |
| World Capitals Closest to London | 0 | - | 4.87 | 110,586 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,762 |
