| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,491 |
| Counties of England | 0 | - | 4.97 | 803,668 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,903 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,055 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,001 |
| Monarchies of Europe | 0 | - | 4.90 | 98,971 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,002 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,744 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,920 |
| States of Germany | 0 | - | 4.95 | 154,748 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,754 |
| Regions of Italy | 0 | - | 4.92 | 77,188 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,859 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,463 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,840 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,580 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,848 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,131 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,002 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,888 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,216 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,123 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,109 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,425 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,174 |
| Name the English Monarchs | 0 | - | 4.91 | 507,031 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,054 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,435 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,357 |
| The Only European Country ... | 0 | - | 4.91 | 219,352 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,711 |
| History of The Netherlands | 0 | - | 4.46 | 17,564 |
| British Acronyms | 0 | - | 4.40 | 45,954 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,178 |
| NATO Countries | 0 | - | 4.98 | 283,773 |
| EU Countries Quiz | 0 | - | 4.99 | 278,534 |
| History of Italy | 0 | - | 4.55 | 32,166 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,836 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,451 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,120 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,973 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,606 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,689 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,371 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,068 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,862 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,991 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,214 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,289 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,848 |
| Slavic Countries | 0 | - | 4.96 | 112,453 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,720 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,816 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,224 |
| All World Leaders 2026 | 0 | - | 4.95 | 21,083 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,299 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,697 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,194 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,532 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,229 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,727 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,252 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,862 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,144 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,742 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,537 |
| Regions of France | 0 | - | 4.70 | 122,252 |
| France Immigration by Country | 0 | - | 4.70 | 76,975 |
| Famous Germans | 0 | - | 4.50 | 55,835 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,538 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,476 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,862 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,894 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,928 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,648 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,726 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,840 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,781 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,561 |
| European Countries with One Border | 0 | - | 4.97 | 183,935 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,651 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,477 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,948 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,081 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,748 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,531 |
| History of Austria | 0 | - | 4.70 | 17,984 |
| Geography of the French Empire | 0 | - | 4.45 | 27,224 |
| The French Revolution | 0 | - | 4.47 | 24,155 |
| History of France | 0 | - | 4.61 | 57,680 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,567 |
| The Vikings! | 0 | - | 4.46 | 28,418 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| American to British Word Translation | 0 | - | 4.14 | 139,772 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,080 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,170 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,405 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,583 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,480 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,324 |
| Geography of the British Empire | 0 | - | 4.48 | 39,862 |
| Champions League Winners | 0 | - | 4.92 | 1,017,164 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,081 |
| Monarchies of Asia | 0 | - | 4.97 | 71,564 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,324 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,905 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,144 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,031 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,021 |
| Russia Country Quiz | 0 | - | 4.83 | 115,385 |
| Countries That Border Russia | 0 | - | 4.98 | 464,709 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,799 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,612 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,971 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,908 |
| Departments of France | 0 | - | 4.93 | 55,283 |
| Countries Bordering France | 0 | - | 4.83 | 405,156 |
| Germany Country Quiz | 0 | - | 4.82 | 158,956 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,155 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,059 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,333 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,141 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,757 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,551 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,964 |
| England or Wales? | 0 | - | 4.94 | 45,997 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,329 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,792 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,468 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,835 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,516 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,358 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,613 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,316 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,086 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,674 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,312 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,704 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,674 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,810 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,977 |
| European Geography A-Z | 0 | - | 4.29 | 49,505 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,726 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,237 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,731 |
| Famous French People | 0 | - | 4.05 | 36,131 |
| The Mafia Quiz | 0 | - | 4.46 | 23,445 |
| Canary Islands | 0 | - | 4.62 | 17,545 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,111 |
| British Spellings | 0 | - | 4.06 | 99,618 |
| British Groups of Things | 0 | - | 4.26 | 83,032 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,122 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,809 |
| British Monopoly Board | 0 | - | 4.52 | 41,281 |
| Geography of Scotland | 0 | - | 4.63 | 21,755 |
| All OPEC Countries Ever | 0 | - | 4.70 | 100,315 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,638 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,775 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,538 |
| U.S. States by Governor | 0 | - | 4.43 | 18,117 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,774 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,789 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,891 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,353 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,385 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,784 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,002 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,189 |
| Countries that Border Poland | 0 | - | 4.99 | 173,272 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,318 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,077 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,054 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,074 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,046 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,156 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,115 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,995 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,196 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,532 |
| Geography of Germany | 0 | - | 4.35 | 17,297 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,905 |
| History of Germany | 0 | - | 4.39 | 52,990 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,470 |
| Name that Greek Letter | 0 | - | 4.93 | 325,142 |
| Counties of Ireland | 0 | - | 4.92 | 197,512 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,320 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,532 |
| History of Spain | 0 | - | 4.23 | 21,171 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,264 |
| British to American Word Translation | 0 | - | 3.74 | 255,374 |
| British Foods by Description | 0 | - | 3.94 | 48,397 |
| British and American Word Differences | 0 | - | 2.63 | 46,936 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,238 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,537 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,831 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,991 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,992 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,806 |
