| Name the English Monarchs | 0 | - | 4.91 | 502,981 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,963 |
| The Trojan War | 0 | - | 4.83 | 39,741 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,927 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,555 |
| Roman Emperors | 0 | - | 4.95 | 120,124 |
| Monarchies of Europe | 0 | - | 4.90 | 98,184 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,803 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,686 |
| Countries Bordering France | 0 | - | 4.83 | 402,680 |
| Departments of France | 0 | - | 4.93 | 54,192 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,784 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,888 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,200 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,152 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,900 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,313 |
| French History Multiple Choice | 0 | - | 4.55 | 33,056 |
| English Royal Consorts | 0 | - | 4.38 | 37,370 |
| French History A-Z | 0 | - | 4.27 | 24,670 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,048 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,014 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,921 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,347 |
| Medieval English History | 0 | - | 4.53 | 43,525 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,446 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,250 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,756 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,073 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,949 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,502 |
| Monarchies of Asia | 0 | - | 4.97 | 71,113 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,165 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,071 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,406 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,216 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,705 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,823 |
| Germany Country Quiz | 0 | - | 4.83 | 157,924 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,401 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,531 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,718 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,673 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,449 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,097 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,560 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,759 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,948 |
| Roman Names for Places | 0 | - | 4.62 | 58,311 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,966 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,721 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,687 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,762 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,164 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,973 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,507 |
| England or Wales? | 0 | - | 4.94 | 45,718 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,842 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,562 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,509 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,117 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,345 |
| France Country Quiz | 0 | - | 4.70 | 135,026 |
| History of France | 0 | - | 4.59 | 57,038 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,843 |
| Counties of Ireland | 0 | - | 4.92 | 195,460 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,884 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,106 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,053 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,292 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,896 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,267 |
| History of Scotland | 0 | - | 4.51 | 21,097 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,692 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,874 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,345 |
| Geography of the French Empire | 0 | - | 4.45 | 27,078 |
| The French Revolution | 0 | - | 4.47 | 23,964 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,248 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,496 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,505 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,738 |
| Name that Greek Letter | 0 | - | 4.93 | 323,623 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,521 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,185 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,374 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,976 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,472 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,094 |
| Countries in World War I | 0 | - | 4.88 | 228,218 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,591 |
| Countries that Beat France | 0 | - | 4.49 | 75,891 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,059 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,104 |
| British Monopoly Board | 0 | - | 4.52 | 41,177 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,390 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,144 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,982 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,142 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,345 |
| The Only European Country ... | 0 | - | 4.91 | 216,795 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,224 |
| History of Russia Quiz | 0 | - | 4.47 | 31,923 |
| 20 Questions About France | 0 | - | 4.11 | 32,415 |
| Ancient Greek Words | 0 | - | 4.93 | 111,661 |
| History of Italy | 0 | - | 4.55 | 31,984 |
| Italian History A-Z | 0 | - | 4.21 | 17,719 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,671 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,244 |
| Spanish History A-Z | 0 | - | 4.37 | 19,305 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,298 |
| Counties of England | 0 | - | 4.97 | 797,353 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,880 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,720 |
| British History A-Z #1 | 0 | - | 4.45 | 46,508 |
| History of London | 0 | - | 4.33 | 26,196 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,634 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,847 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,323 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,720 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,249 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,843 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,199 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,002 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,704 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,062 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,347 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,252 |
| Slavic Countries | 0 | - | 4.96 | 111,716 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,237 |
| Regions of France | 0 | - | 4.72 | 120,891 |
| France Immigration by Country | 0 | - | 4.70 | 76,553 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,313 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,309 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,151 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,352 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,309 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,172 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,281 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,691 |
| British Geography A-Z | 0 | - | 4.42 | 19,527 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,678 |
| Champions League Winners | 0 | - | 4.92 | 1,007,321 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,904 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,639 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,406 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,223 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,893 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,896 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,607 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,406 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,180 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,491 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,801 |
| European Countries with One Border | 0 | - | 4.97 | 182,847 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,647 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,965 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,679 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,236 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,774 |
| Russia Country Quiz | 0 | - | 4.83 | 114,529 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,450 |
| Countries That Border Russia | 0 | - | 4.98 | 461,883 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,372 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,941 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,358 |
| History of Austria | 0 | - | 4.70 | 17,867 |
| Austria Country Quiz | 0 | - | 4.57 | 59,769 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,840 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| History of Paris | 0 | - | 4.24 | 13,654 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,893 |
| States of Germany | 0 | - | 4.95 | 152,725 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,092 |
| German History A-Z | 0 | - | 4.49 | 24,624 |
| Greece Country Quiz | 0 | - | 4.74 | 66,296 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,077 |
| History of Ireland | 0 | - | 4.39 | 31,203 |
| Regions of Italy | 0 | - | 4.92 | 75,965 |
| Italy Country Quiz | 0 | - | 4.80 | 123,445 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,767 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,520 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,558 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,224 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,481 |
| The Vikings! | 0 | - | 4.46 | 28,350 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,149 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,930 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| Spain Country Quiz | 0 | - | 4.44 | 128,583 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,048 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,051 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,391 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,249 |
| UK Immigration by Country | 0 | - | 4.94 | 140,956 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,880 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,031 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,056 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,741 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,357 |
