| Counties of England | 0 | - | 4.97 | 794,343 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,109 |
| Monarchies of Europe | 0 | - | 4.90 | 97,895 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,796 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,067 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,482 |
| States of Germany | 0 | - | 4.96 | 151,748 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,838 |
| Regions of Italy | 0 | - | 4.92 | 75,491 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,727 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,573 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,949 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,502 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,767 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 72,784 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,820 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,726 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,903 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,454 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,554 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,359 |
| Departments of France | 0 | - | 4.93 | 53,689 |
| Germany Country Quiz | 0 | - | 4.82 | 157,505 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,825 |
| Italy Country Quiz | 0 | - | 4.82 | 123,140 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,043 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,752 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,510 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,628 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,313 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,226 |
| England or Wales? | 0 | - | 4.94 | 45,583 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,322 |
| Austria Country Quiz | 0 | - | 4.57 | 59,611 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,543 |
| Name the English Monarchs | 0 | - | 4.91 | 501,211 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,606 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,160 |
| Malta Country Quiz | 0 | - | 4.81 | 30,990 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,403 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,827 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,720 |
| The Only European Country ... | 0 | - | 4.91 | 215,846 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,669 |
| History of The Netherlands | 0 | - | 4.46 | 17,401 |
| British Acronyms | 0 | - | 4.39 | 45,744 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,646 |
| NATO Countries | 0 | - | 4.98 | 279,029 |
| EU Countries Quiz | 0 | - | 4.99 | 272,626 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,240 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,069 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,284 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,464 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,224 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,973 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,054 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,028 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,160 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,493 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,186 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,747 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,060 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,699 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,297 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,375 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,915 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,022 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,935 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,885 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,343 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,939 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,675 |
| Slavic Countries | 0 | - | 4.96 | 111,439 |
| Regions of France | 0 | - | 4.75 | 120,334 |
| France Immigration by Country | 0 | - | 4.70 | 76,370 |
| Famous Germans | 0 | - | 4.50 | 55,119 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,859 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,843 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,218 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,196 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,033 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,934 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,635 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,193 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,842 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,844 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,457 |
| European Countries with One Border | 0 | - | 4.97 | 182,445 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,257 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,823 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,077 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,229 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,665 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,564 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,636 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,148 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,688 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,896 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,974 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,514 |
| People on Money - England | 0 | - | 4.29 | 16,600 |
| Champions League Winners | 0 | - | 4.92 | 1,003,271 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,366 |
| Monarchies of Asia | 0 | - | 4.97 | 70,940 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,751 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| Countries That Border Russia | 0 | - | 4.98 | 460,965 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,623 |
| France Country Quiz | 0 | - | 4.70 | 134,696 |
| Countries Bordering France | 0 | - | 4.83 | 401,748 |
| Kings of France Quiz | 0 | - | 4.20 | 32,673 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,501 |
| Greece Country Quiz | 0 | - | 4.74 | 66,101 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,677 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,423 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,353 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,358 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,010 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,715 |
| Spain Country Quiz | 0 | - | 4.45 | 128,249 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,233 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,671 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,291 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,302 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,263 |
| Geography of the British Empire | 0 | - | 4.48 | 39,627 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,654 |
| Counties of Wales | 0 | - | 4.63 | 39,168 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,017 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,702 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,160 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,503 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,678 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,327 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,178 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,844 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,448 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,702 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,962 |
| European Geography A-Z | 0 | - | 4.29 | 49,180 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,192 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,729 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,252 |
| Russia Country Quiz | 0 | - | 4.85 | 114,232 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,212 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,276 |
| Famous French People | 0 | - | 4.06 | 34,335 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,922 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,868 |
| The Mafia Quiz | 0 | - | 4.46 | 23,292 |
| Canary Islands | 0 | - | 4.62 | 17,458 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,659 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,566 |
| British Spellings | 0 | - | 4.06 | 99,396 |
| British Groups of Things | 0 | - | 4.25 | 82,823 |
| UK Immigration by Country | 0 | - | 4.94 | 140,605 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,012 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,334 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,977 |
| British Monopoly Board | 0 | - | 4.52 | 41,133 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,153 |
| Geography of Scotland | 0 | - | 4.63 | 21,580 |
| Medieval English History | 0 | - | 4.53 | 43,448 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,231 |
| Famous Scottish People | 0 | - | 4.22 | 18,386 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,654 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,791 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,613 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,293 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,085 |
| U.S. States by Governor | 0 | - | 4.43 | 18,036 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,662 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,642 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,460 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,178 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,536 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,022 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,640 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,255 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,283 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,314 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,702 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,137 |
| Countries that Border Poland | 0 | - | 4.99 | 172,001 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,688 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,085 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,064 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,788 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,723 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,217 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,700 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,613 |
| 20 Questions About France | 0 | - | 4.11 | 32,384 |
| France A-Z | 0 | - | 4.16 | 38,160 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,773 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,068 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,487 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,952 |
| History of Germany | 0 | - | 4.39 | 52,770 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,849 |
