| States of Germany Map Quiz | 0 | - | 4.91 | 132,911 |
| States of Germany | 0 | - | 4.95 | 152,773 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,121 |
| Germany Country Quiz | 0 | - | 4.83 | 157,955 |
| Counties of England | 0 | - | 4.97 | 797,525 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,077 |
| Monarchies of Europe | 0 | - | 4.90 | 98,200 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,537 |
| Regions of Italy | 0 | - | 4.92 | 76,001 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,253 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,079 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,257 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,044 |
| Europe Map Quiz | 0 | - | 5.00 | 4,765,304 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,585 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,899 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,185 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,088 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,007 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,463 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,251 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,709 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,850 |
| Departments of France | 0 | - | 4.93 | 54,224 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,419 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,473 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,127 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,562 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,985 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,739 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,284 |
| England or Wales? | 0 | - | 4.94 | 45,728 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,415 |
| Name the English Monarchs | 0 | - | 4.91 | 503,116 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,148 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,321 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,916 |
| Malta Country Quiz | 0 | - | 4.81 | 31,075 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,193 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,626 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,366 |
| The Only European Country ... | 0 | - | 4.91 | 216,870 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,271 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,528 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,079 |
| British Acronyms | 0 | - | 4.40 | 45,811 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,401 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,353 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,293 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,740 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,263 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,903 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,218 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,732 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,159 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,369 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,264 |
| Slavic Countries | 0 | - | 4.96 | 111,729 |
| Regions of France | 0 | - | 4.72 | 120,931 |
| France Immigration by Country | 0 | - | 4.70 | 76,567 |
| Germany A-Z | 0 | - | 4.56 | 62,634 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,592 |
| History of Germany | 0 | - | 4.39 | 52,847 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,055 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,412 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,316 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,296 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,650 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,473 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,546 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,919 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,634 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,440 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,191 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,821 |
| European Countries with One Border | 0 | - | 4.97 | 182,878 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,674 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,703 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,492 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,408 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,792 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,103 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,968 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,511 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,950 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,731 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,803 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,682 |
| Champions League Winners | 0 | - | 4.92 | 1,007,539 |
| Monarchies of Asia | 0 | - | 4.97 | 71,126 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,919 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,516 |
| Countries That Border Russia | 0 | - | 4.98 | 461,947 |
| Austria Country Quiz | 0 | - | 4.57 | 59,781 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,847 |
| France Country Quiz | 0 | - | 4.70 | 135,040 |
| Countries Bordering France | 0 | - | 4.83 | 402,731 |
| Kings of France Quiz | 0 | - | 4.20 | 32,762 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 48,863 |
| Greece Country Quiz | 0 | - | 4.74 | 66,308 |
| Italy Country Quiz | 0 | - | 4.80 | 123,460 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,774 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,525 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,566 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,484 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,157 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,938 |
| Spain Country Quiz | 0 | - | 4.44 | 128,608 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,398 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,070 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,746 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,339 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,365 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,546 |
| Geography of the British Empire | 0 | - | 4.48 | 39,701 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,713 |
| Counties of Wales | 0 | - | 4.63 | 39,323 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,658 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,432 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,250 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,998 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,560 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,526 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,021 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,329 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,810 |
| Russia Country Quiz | 0 | - | 4.83 | 114,546 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,384 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,364 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,818 |
| German History A-Z | 0 | - | 4.49 | 24,627 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,026 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,929 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,359 |
| History of The Netherlands | 0 | - | 4.46 | 17,444 |
| Canary Islands | 0 | - | 4.62 | 17,485 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,084 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,743 |
| British Spellings | 0 | - | 4.06 | 99,467 |
| British Groups of Things | 0 | - | 4.25 | 82,883 |
| UK Immigration by Country | 0 | - | 4.94 | 140,982 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,044 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,910 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,271 |
| British Monopoly Board | 0 | - | 4.52 | 41,180 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,725 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,848 |
| Geography of Scotland | 0 | - | 4.63 | 21,630 |
| Medieval English History | 0 | - | 4.53 | 43,532 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,241 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,509 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,016 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,823 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,125 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,881 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,319 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,119 |
| U.S. States by Governor | 0 | - | 4.43 | 18,065 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,704 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,688 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,874 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,232 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,820 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,129 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,661 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,421 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,820 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,110 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,502 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,858 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 64,308 |
| Countries that Border Poland | 0 | - | 4.99 | 172,345 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,887 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,079 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,270 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,886 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,832 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,463 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,796 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,361 |
| 20 Questions About France | 0 | - | 4.11 | 32,418 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,896 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,208 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,490 |
| Geography of Germany | 0 | - | 4.35 | 17,194 |
| Famous Germans by Picture | 0 | - | 4.12 | 16,847 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,904 |
| Name that Greek Letter | 0 | - | 4.93 | 323,835 |
| Counties of Ireland | 0 | - | 4.92 | 195,505 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,898 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,132 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,105 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,707 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,026 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,948 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,792 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,757 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,810 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,165 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,698 |
