| States of Germany Map Quiz | 0 | - | 4.92 | 133,876 |
| States of Germany | 0 | - | 4.95 | 154,682 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,735 |
| Germany Country Quiz | 0 | - | 4.82 | 158,923 |
| Counties of England | 0 | - | 4.97 | 803,474 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,482 |
| Monarchies of Europe | 0 | - | 4.90 | 98,938 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,724 |
| Regions of Italy | 0 | - | 4.92 | 77,157 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,840 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,430 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,816 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,568 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,224 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,999 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,126 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,970 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,864 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,210 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,048 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,052 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,964 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,879 |
| Departments of France | 0 | - | 4.93 | 55,246 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,135 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,296 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,110 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,753 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,541 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,941 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,418 |
| England or Wales? | 0 | - | 4.94 | 45,990 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,097 |
| Name the English Monarchs | 0 | - | 4.91 | 506,904 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,159 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,638 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,826 |
| Malta Country Quiz | 0 | - | 4.81 | 31,245 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,979 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,370 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,292 |
| The Only European Country ... | 0 | - | 4.91 | 219,275 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,652 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,397 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,593 |
| British Acronyms | 0 | - | 4.40 | 45,951 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,802 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,483 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,384 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,654 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,149 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,003 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,842 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,919 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,104 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,262 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,829 |
| Slavic Countries | 0 | - | 4.96 | 112,429 |
| Regions of France | 0 | - | 4.70 | 122,217 |
| France Immigration by Country | 0 | - | 4.70 | 76,964 |
| Germany A-Z | 0 | - | 4.56 | 62,878 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,801 |
| History of Germany | 0 | - | 4.39 | 52,985 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,531 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,828 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,861 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,870 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,827 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,056 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,877 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,042 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,894 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,613 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,694 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,824 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,532 |
| European Countries with One Border | 0 | - | 4.97 | 183,891 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,611 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,977 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,448 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,701 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,881 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,924 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,641 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,688 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,513 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,598 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,145 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,827 |
| Champions League Winners | 0 | - | 4.92 | 1,016,860 |
| Monarchies of Asia | 0 | - | 4.97 | 71,544 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,316 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,772 |
| Countries That Border Russia | 0 | - | 4.98 | 464,653 |
| Austria Country Quiz | 0 | - | 4.57 | 60,084 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,290 |
| France Country Quiz | 0 | - | 4.70 | 135,714 |
| Countries Bordering France | 0 | - | 4.83 | 405,083 |
| Kings of France Quiz | 0 | - | 4.21 | 32,940 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,564 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 49,138 |
| Greece Country Quiz | 0 | - | 4.74 | 66,664 |
| Italy Country Quiz | 0 | - | 4.77 | 124,110 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,964 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,708 |
| Netherlands Country Quiz | 0 | - | 4.52 | 80,977 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,760 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,405 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,353 |
| Spain Country Quiz | 0 | - | 4.44 | 129,306 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,671 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,394 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,867 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,465 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,476 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,304 |
| Geography of the British Empire | 0 | - | 4.48 | 39,854 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,846 |
| Counties of Wales | 0 | - | 4.63 | 39,652 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,885 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,159 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,957 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,834 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,062 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,909 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,976 |
| Russia Country Quiz | 0 | - | 4.83 | 115,367 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,782 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,608 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 39,008 |
| German History A-Z | 0 | - | 4.49 | 24,926 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,250 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,054 |
| Countries Italy Declared War On | 0 | - | 4.70 | 46,540 |
| History of The Netherlands | 0 | - | 4.46 | 17,562 |
| Canary Islands | 0 | - | 4.62 | 17,544 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,001 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,099 |
| British Spellings | 0 | - | 4.06 | 99,615 |
| British Groups of Things | 0 | - | 4.26 | 83,029 |
| UK Immigration by Country | 0 | - | 4.94 | 141,794 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,118 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,123 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,777 |
| British Monopoly Board | 0 | - | 4.52 | 41,277 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,888 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,167 |
| Geography of Scotland | 0 | - | 4.63 | 21,750 |
| Medieval English History | 0 | - | 4.53 | 43,668 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,287 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,274 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,782 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,505 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,428 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,799 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,402 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,492 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,464 |
| U.S. States by Governor | 0 | - | 4.43 | 18,116 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,772 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,788 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,861 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.75 | 12,349 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,708 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,376 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,724 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,767 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,319 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,885 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,989 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,356 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,715 |
| Countries that Border Poland | 0 | - | 4.99 | 173,235 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,309 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,011 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,041 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,065 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,044 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,135 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,976 |
| 20 Questions About France | 0 | - | 4.11 | 32,474 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,179 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,516 |
| Geography of Germany | 0 | - | 4.35 | 17,294 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,910 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,333 |
| Name that Greek Letter | 0 | - | 4.93 | 325,099 |
| Counties of Ireland | 0 | - | 4.92 | 197,441 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,296 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,486 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,224 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,993 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,094 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,495 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,115 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,830 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,987 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,247 |
| Houses of British Monarchs | 0 | - | 4.54 | 65,980 |
